Quiz 8 May 21, 2015 Computer Engineering 80N

Size: px
Start display at page:

Download "Quiz 8 May 21, 2015 Computer Engineering 80N"

Transcription

1 Quiz 8 May 21, 2015 Computer Engineering 80N Left Neighbor: Right Neighbor: Keep this side up on your desk until you are told to turn the page over. This is a closed book quiz. No calculators.

2 First Name Last Name CE 80N Quiz 8, May 21, 2015 The following questions refer to network diagram below. Alice Bob Carol Trent Router #1 Router # /24 /24 /24 /24 /24 /24 /24 /24 Santa Cruz Network Middle Network New York Network 1. (1 point) What is the network address of the Santa Cruz Network.... / 2. (1 point) What is the network address of the New York Network.... / 3. (1.5 points) The Routing Table of the Router #1 is below. Add an entry that lets laptops in Santa Cruz send packets to laptops in New York. 4. (1.5 points) The Routing Table of the Router #2 is below. Add an entry that lets laptops in New York send packets to laptops in Santa Cruz. 5. (1 point) Trent wants to check how many hops there are between his laptop and Bob s laptop. What command can Trent type on his laptop to determine the number of hops? 6. (1 point) Alice wants to check that her laptop can communicate with Carol s laptop. What command can Alice type on her laptop to check whether there can be a connection? 7. (1 point) Bob and Carol each start a videoconferencing program that streams audio and video to the other s laptop. Which Layer-4 protocol does the program use for its packets? 8. (2 points) A packet is traveling through the network from Alice s laptop to Trent s laptop. When the packet is on the Middle Network, what are its IP addresses? Ethernet Header IP Header Dest Src Type Source Destination Rest of MAC MAC IP Address IP Address IP Hdr. Data......

3 Quiz 8 May 21, 2015 Computer Engineering 80N Left Neighbor: Right Neighbor: Keep this side up on your desk until you are told to turn the page over. This is a closed book quiz. No calculators.

4 First Name Last Name CE 80N Quiz 8, May 21, 2015 The following questions refer to network diagram below. Linda Pat Wendy Craig Router #1 Router # /24 /24 /24 /24 /24 /24 /24 /24 Santa Cruz Network Middle Network New York Network 1. (1 point) What is the network address of the Santa Cruz Network.... / 2. (1 point) What is the network address of the New York Network.... / 3. (1.5 points) The Routing Table of the Router #1 is below. Add an entry that lets laptops in Santa Cruz send packets to laptops in New York. 4. (1.5 points) The Routing Table of the Router #2 is below. Add an entry that lets laptops in New York send packets to laptops in Santa Cruz. 5. (1 point) Craig wants to check how many hops there are between his laptop and Pat s laptop. What command can Craig type on his laptop to determine the number of hops? 6. (1 point) Linda wants to check that her laptop can communicate with Wendy s laptop. What command can Linda type on her laptop to check whether there can be a connection? 7. (1 point) Pat and Wendy each start a videoconferencing program that streams audio and video to the other s laptop. Which Layer-4 protocol does the program use for its packets? 8. (2 points) A packet is traveling through the network from Linda s laptop to Craig s laptop. When the packet is on the Middle Network, what are its IP addresses? Ethernet Header IP Header Dest Src Type Source Destination Rest of MAC MAC IP Address IP Address IP Hdr. Data......

5 Quiz 8 May 21, 2015 Computer Engineering 80N Left Neighbor: Right Neighbor: Keep this side up on your desk until you are told to turn the page over. This is a closed book quiz. No calculators.

6 First Name Last Name CE 80N Quiz 8, May 21, 2015 The following questions refer to network diagram below. Carol Sam Sybil Oscar Router #1 Router # /24 /24 /24 /24 /24 /24 /24 /24 Santa Cruz Network Middle Network New York Network 1. (1 point) What is the network address of the Santa Cruz Network.... / 2. (1 point) What is the network address of the New York Network.... / 3. (1.5 points) The Routing Table of the Router #1 is below. Add an entry that lets laptops in Santa Cruz send packets to laptops in New York. 4. (1.5 points) The Routing Table of the Router #2 is below. Add an entry that lets laptops in New York send packets to laptops in Santa Cruz. 5. (1 point) Oscar wants to check how many hops there are between his laptop and Sam s laptop. What command can Oscar type on his laptop to determine the number of hops? 6. (1 point) Carol wants to check that her laptop can communicate with Sybil s laptop. What command can Carol type on her laptop to check whether there can be a connection? 7. (1 point) Sam and Sybil each start a videoconferencing program that streams audio and video to the other s laptop. Which Layer-4 protocol does the program use for its packets? 8. (2 points) A packet is traveling through the network from Carol s laptop to Oscar s laptop. When the packet is on the Middle Network, what are its IP addresses? Ethernet Header IP Header Dest Src Type Source Destination Rest of MAC MAC IP Address IP Address IP Hdr. Data......

Quiz 7 May 14, 2015 Computer Engineering 80N

Quiz 7 May 14, 2015 Computer Engineering 80N Quiz 7 May 14, 2015 Computer Engineering 80N Left Neighbor: Right Neighbor: Keep this side up on your desk until you are told to turn the page over. This is a closed book quiz. No calculators. First Name

More information

Exercise 1 INTERNET. x.x.x.254. net /24. net /24. x.x.x.33. x.x.x.254. x.x.x.52. x.x.x.254. x.x.x.254. x.x.x.

Exercise 1 INTERNET. x.x.x.254. net /24. net /24. x.x.x.33. x.x.x.254. x.x.x.52. x.x.x.254. x.x.x.254. x.x.x. Exercise 1 Given the IP network below: Assign feasible IP addresses to the interfaces and write down a feasible routing table for routers A and B guaranteeing full connectivity x.x.x.33 x.x.x.254 net 131.175.16.0/24

More information

Homework 3 Discussion

Homework 3 Discussion Homework 3 Discussion Address Resolution Protocol (ARP) Data Link Layer Network Layer Data Link Layer Network Layer Protocol Data Unit(PDU) Frames Packets Typical Device Switch/Bridge Router Range Local

More information

CS164 Final Exam Winter 2013

CS164 Final Exam Winter 2013 CS164 Final Exam Winter 2013 Name: Last 4 digits of Student ID: Problem 1. State whether each of the following statements is true or false. (Two points for each correct answer, 1 point for each incorrect

More information

ICS 451: Today's plan. Network Layer Protocols: virtual circuits Static Routing Distance-Vector Routing

ICS 451: Today's plan. Network Layer Protocols: virtual circuits Static Routing Distance-Vector Routing ICS 451: Today's plan Network Layer Protocols: virtual circuits Static Routing Distance-Vector Routing Virtual Circuits: Motivation Implementing the routing table in hardware can be expensive to make it

More information

Introduction to Networks and the Internet

Introduction to Networks and the Internet Introduction to Networks and the Internet CMPE 80N Winter 2004 Lecture 18 Announcements Fourth quiz on Monday, March 1 st. Third HTML discussion session today by Kiran (before class). Summary posted on

More information

EE122 Spring 2001 Final

EE122 Spring 2001 Final EE122 Spring 2001 Final 1: True or False [20%] 1. Light in a fiber travels faster than signals in copper. 2. Block coding can achieve a higher compression than Huffman codes. 3. Layer 2 switching cannot

More information

CSE 123: Computer Networks

CSE 123: Computer Networks CSE 123: Computer Networks Homework 3 Out: 11/19 Due: 11/26 Instructions 1. Turn in a physical copy at the beginning of the class on 11/26 2. Ensure the HW cover page has the following information clearly

More information

SDN-based Network Obfuscation. Roland Meier PhD Student ETH Zürich

SDN-based Network Obfuscation. Roland Meier PhD Student ETH Zürich SDN-based Network Obfuscation Roland Meier PhD Student ETH Zürich This Talk This thesis vs. existing solutions Alice Bob source: Alice destination: Bob Hi Bob, Hi Bob, Payload encryption ǾǼōĦ

More information

IP : Internet Protocol

IP : Internet Protocol 1/20 IP : Internet Protocol Surasak Sanguanpong nguan@ku.ac.th http://www.cpe.ku.ac.th/~nguan Last updated: July 30, 1999 Agenda 2/20 IP functions IP header format Routing architecture IP layer 3/20 defines

More information

ECPE / COMP 177 Fall Some slides from Kurose and Ross, Computer Networking, 5 th Edition

ECPE / COMP 177 Fall Some slides from Kurose and Ross, Computer Networking, 5 th Edition ECPE / COMP 177 Fall 2016 Some slides from Kurose and Ross, Computer Networking, 5 th Edition Course Organization Top-Down! Starting with Applications / App programming Then Transport Layer (TCP/UDP) Then

More information

Lesson 9 OpenFlow. Objectives :

Lesson 9 OpenFlow. Objectives : 1 Lesson 9 Objectives : is new technology developed in 2004 which introduce Flow for D-plane. The Flow can be defined any combinations of Source/Destination MAC, VLAN Tag, IP address or port number etc.

More information

Ref: A. Leon Garcia and I. Widjaja, Communication Networks, 2 nd Ed. McGraw Hill, 2006 Latest update of this lecture was on

Ref: A. Leon Garcia and I. Widjaja, Communication Networks, 2 nd Ed. McGraw Hill, 2006 Latest update of this lecture was on IP Routing Routing is the process performed by routers to transfer packets from the source machine to the destination. Unlike switches, routers are configured by a network administrator. Routers share

More information

cs144 Midterm Review Fall 2010

cs144 Midterm Review Fall 2010 cs144 Midterm Review Fall 2010 Administrivia Lab 3 in flight. Due: Thursday, Oct 28 Midterm is this Thursday, Oct 21 (during class) Remember Grading Policy: - Exam grade = max (final, (final + midterm)/2)

More information

ECE 461 Internetworking Fall Quiz 1

ECE 461 Internetworking Fall Quiz 1 ECE 461 Internetworking Fall 2010 Quiz 1 Instructions (read carefully): The time for this quiz is 50 minutes. This is a closed book and closed notes in-class exam. Non-programmable calculators are permitted

More information

On the Internet, nobody knows you re a dog.

On the Internet, nobody knows you re a dog. On the Internet, nobody knows you re a dog. THREATS TO DISTRIBUTED APPLICATIONS 1 Jane Q. Public Big Bank client s How do I know I am connecting to my bank? server s Maybe an attacker...... sends you phishing

More information

Lecture 2-ter. 2. A communication example Managing a HTTP v1.0 connection. Managing a HTTP request. transport session. Step 1 - opening transport

Lecture 2-ter. 2. A communication example Managing a HTTP v1.0 connection. Managing a HTTP request. transport session. Step 1 - opening transport Lecture 2-ter. 2 A communication example Managing a HTTP v1.0 connection Managing a HTTP request User digits URL and press return (or clicks ). What happens (HTTP 1.0): 1. opens a TCP transport session

More information

6.033 Computer System Engineering

6.033 Computer System Engineering MIT OpenCourseWare http://ocw.mit.edu 6.033 Computer System Engineering Spring 2009 For information about citing these materials or our Terms of Use, visit: http://ocw.mit.edu/terms. L11: Link and Network

More information

Networking Background

Networking Background Networking Background CMSC 414 October 30, 2017 General Overview We are going to take a quick look at What a network protocol is The abstract design of the network The 7-Layer network stack Protocols We

More information

INSTRUCTIONS TO CANDIDATES

INSTRUCTIONS TO CANDIDATES NATIONAL UNIVERSITY OF SINGAPORE SCHOOL OF COMPUTING FINAL EXAMINATION FOR Semester 2 AY2012/2013 Introduction to Computer Networks April 2013 Time Allowed 2 hours INSTRUCTIONS TO CANDIDATES 1. This exam

More information

Juniper Netscreen Security Device. How to Enable IPv6 Page-51

Juniper Netscreen Security Device. How to Enable IPv6 Page-51 Juniper Netscreen Security Device Page-51 Netscreen Firewall - Interfaces Below is a screen shot for a Netscreen Firewall interface. All interfaces have an IPv6 address except ethernet0/0. We will step

More information

Putting it all together

Putting it all together Putting it all together What happens when a user shows up to a new network and wants to access a web site? (These are new slides. Please stop and ask questions if anything is unclear!) Scenario Scenario

More information

OSI Network Layer. Network Fundamentals Chapter 5. Version Cisco Systems, Inc. All rights reserved. Cisco Public 1

OSI Network Layer. Network Fundamentals Chapter 5. Version Cisco Systems, Inc. All rights reserved. Cisco Public 1 OSI Network Layer Network Fundamentals Chapter 5 Version 4.0 1 Objectives Identify the role of the Network Layer, as it describes communication from one end device to another end device. Examine the most

More information

Networking Potpourri: Plug-n-Play, Next Gen

Networking Potpourri: Plug-n-Play, Next Gen Networking Potpourri: Plug-n-Play, Next Gen 14-740: Fundamentals of Computer Networks Bill Nace Material from Computer Networking: A Top Down Approach, 6 th edition. J.F. Kurose and K.W. Ross Administrivia

More information

Midterm Exam II CMPSCI 453: Computer Networks Fall 2010 Prof. Jim Kurose

Midterm Exam II CMPSCI 453: Computer Networks Fall 2010 Prof. Jim Kurose Midterm Exam II CMPSCI 453: Computer Networks Fall 200 Prof. Jim Kurose Instructions: Please use two exam blue books answer questions, 2 in one book, and the remaining two questions in the second blue

More information

Local Area Networks; Ethernet

Local Area Networks; Ethernet Communications and networking history and background telephone system local area networks Internet architecture: what the pieces are and how they fit together names and addresses: what's your name and

More information

ECPE / COMP 177 Fall Some slides from Kurose and Ross, Computer Networking, 5 th Edition

ECPE / COMP 177 Fall Some slides from Kurose and Ross, Computer Networking, 5 th Edition ECPE / COMP 177 Fall 2012 Some slides from Kurose and Ross, Computer Networking, 5 th Edition Application Layer Transport Layer Network Layer Link Layer Physical Layer 2 Application Layer HTTP DNS IMAP

More information

ARP, IP, TCP, UDP. CS 166: Introduction to Computer Systems Security 4/7/18 ARP, IP, TCP, UDP 1

ARP, IP, TCP, UDP. CS 166: Introduction to Computer Systems Security 4/7/18 ARP, IP, TCP, UDP 1 ARP, IP, TCP, UDP CS 166: Introduction to Computer Systems Security 4/7/18 ARP, IP, TCP, UDP 1 IP and MAC Addresses Devices on a local area network have IP addresses (network layer) MAC addresses (data

More information

Network Layer, Link Layer, and Network Security Summary

Network Layer, Link Layer, and Network Security Summary CPSC 826 Internetworking, Link Layer, and Network Security Summary http://www.cs.clemson.edu/~mweigle/courses/cpsc826 1 Chapter 4, 5, 8 Topics» Forwarding and Routing» Router Architecture» Internet Protocol

More information

Quiz. Segment structure and fields Flow control (rwnd) Timeout interval. Phases transition ssthresh setting Cwnd setting

Quiz. Segment structure and fields Flow control (rwnd) Timeout interval. Phases transition ssthresh setting Cwnd setting Quiz v 10/30/2013 (Wednesday), 20 mins v Midterm question (available on website) v TCP basics Segment structure and fields Flow control (rwnd) Timeout interval v TCP Congestion control Phases transition

More information

Introduction to Routing and Packet Forwarding

Introduction to Routing and Packet Forwarding Introduction to Routing and Packet Forwarding Routing Protocols and Concepts 1 Objectives Identify a router as a computer with an OS and hardware designed for the routing process. Demonstrate the ability

More information

Configuring a Load-Balancing Scheme

Configuring a Load-Balancing Scheme This module contains information about Cisco Express Forwarding and describes the tasks for configuring a load-balancing scheme for Cisco Express Forwarding traffic. Load-balancing allows you to optimize

More information

CS 458 Internet Engineering Spring First Exam

CS 458 Internet Engineering Spring First Exam CS 458 Internet Engineering Spring 2005 First Exam Instructions (read carefully): There are 6 problems for a total of 60 points. This is a closed book and closed notes in-class exam. If any problem is

More information

Cisco CCNA Basic IP Routing Part I

Cisco CCNA Basic IP Routing Part I Cisco CCNA Basic IP Routing Part I Cisco CCNA IP Routing In this chapter, we re to discuss the IP routing process. This is an important subject to understand since it pertains to all routers and configurations

More information

MID II Tuesday, 1 st April 2008

MID II Tuesday, 1 st April 2008 Data Communication & Networks MID II Exam (Spring 2008) Page 1 / 8 Data Communication & Networks Spring 2008 Semester MID II Tuesday, 1 st April 2008 Total Time: 60 Minutes Total Marks: 40 Roll Number

More information

CS519: Computer Networks. Lecture 1 (part 2): Jan 28, 2004 Intro to Computer Networking

CS519: Computer Networks. Lecture 1 (part 2): Jan 28, 2004 Intro to Computer Networking : Computer Networks Lecture 1 (part 2): Jan 28, 2004 Intro to Computer Networking Remember this picture? How did the switch know to forward some packets to B and some to D? From the address in the packet

More information

TCP/IP protocol suite

TCP/IP protocol suite TCP/IP protocol suite The TCP/IP protocol suite was developed prior to the OSI model. Therefore, the layers in the TCP/IP protocol suite do not match exactly with those in the OSI model. The original TCP/IP

More information

Homework Assignment #3 Due Oct 3:50 PM

Homework Assignment #3 Due Oct 3:50 PM Homework Assignment #3 Due Oct 27 @ 3:50 PM EE122: Introduction to Communication Networks (Fall 2008) Department of Electrical Engineering and Computer Sciences College of Engineering University of California,

More information

IPv4 addressing, NAT. Computer Networking: A Top Down Approach 6 th edition Jim Kurose, Keith Ross Addison-Wesley.

IPv4 addressing, NAT. Computer Networking: A Top Down Approach 6 th edition Jim Kurose, Keith Ross Addison-Wesley. IPv4 addressing, NAT http://xkcd.com/195/ Computer Networking: A Top Down Approach 6 th edition Jim Kurose, Keith Ross Addison-Wesley Some materials copyright 1996-2012 J.F Kurose and K.W. Ross, All Rights

More information

CSE 473 Introduction to Computer Networks. Exam 1. Your name: 9/26/2013

CSE 473 Introduction to Computer Networks. Exam 1. Your name: 9/26/2013 CSE 473 Introduction to Computer Networks Jon Turner Exam 1 Your name: 9/26/2013 1. (10 points). A user in Chicago, connected to the internet via a 100 Mb/s (b=bits) connection retrieves a 250 KB (B=bytes)

More information

SC/CSE 3213 Winter Sebastian Magierowski York University CSE 3213, W13 L8: TCP/IP. Outline. Forwarding over network and data link layers

SC/CSE 3213 Winter Sebastian Magierowski York University CSE 3213, W13 L8: TCP/IP. Outline. Forwarding over network and data link layers SC/CSE 3213 Winter 2013 L8: TCP/IP Overview Sebastian Magierowski York University 1 Outline TCP/IP Reference Model A set of protocols for internetworking The basis of the modern IP Datagram Exchange Examples

More information

Internet Infrastructure

Internet Infrastructure Internet Infrastructure Internet Infrastructure Local and inter-domain routing TCP/IP for routing and messaging BGP for routing announcements Domain Name System Find IP address from symbolic name (www.cc.gatech.edu)

More information

The OSI Model. Open Systems Interconnection (OSI). Developed by the International Organization for Standardization (ISO).

The OSI Model. Open Systems Interconnection (OSI). Developed by the International Organization for Standardization (ISO). Network Models The OSI Model Open Systems Interconnection (OSI). Developed by the International Organization for Standardization (ISO). Model for understanding and developing computer-to-computer communication

More information

Lecture 2. Computer Networks Models. Network Models 1-1

Lecture 2. Computer Networks Models. Network Models 1-1 Lecture 2 Computer Networks Models Network Models 1-1 Agenda Introduction to the Internet Reference Models for Computer Networks The OSI Model The TCP/IP Model Network Models 1-2 Announcements Bonus -

More information

jumbo6 v1.2 manual pages

jumbo6 v1.2 manual pages jumbo6 v1.2 manual pages Description This tool allows the assessment of IPv6 implementations with respect to attack vectors based on IPv6 jumbograms. This tool is part of the IPv6 Toolkit v1.2: a security

More information

CSC 401 Data and Computer Communications Networks

CSC 401 Data and Computer Communications Networks CSC 401 Data and Computer Communications Networks Network Layer IPv4, Format and Addressing,, IPv6 Prof. Lina Battestilli Fall 2017 Chapter 4 Outline Network Layer: Data Plane 4.1 Overview of Network layer

More information

CE693: Adv. Computer Networking

CE693: Adv. Computer Networking CE693: Adv. Computer Networking L-10 Wireless Broadcast Fall 1390 Acknowledgments: Lecture slides are from the graduate level Computer Networks course thought by Srinivasan Seshan at CMU. When slides are

More information

Extending the LAN. Context. Info 341 Networking and Distributed Applications. Building up the network. How to hook things together. Media NIC 10/18/10

Extending the LAN. Context. Info 341 Networking and Distributed Applications. Building up the network. How to hook things together. Media NIC 10/18/10 Extending the LAN Info 341 Networking and Distributed Applications Context Building up the network Media NIC Application How to hook things together Transport Internetwork Network Access Physical Internet

More information

draft-ietf-v6ops-tunnel-loops - Update and Status

draft-ietf-v6ops-tunnel-loops - Update and Status draft-ietf-v6ops-tunnel-loops - Update and Status IETF V6OPS WG - March 31, 2011 Fred L. Templin Boeing Research & Technology fred.l.templin@boeing.com BOEING is a trademark of Boeing Management Company.

More information

15-441: Computer Networks Homework 3

15-441: Computer Networks Homework 3 5-44: Computer Networks Homework Assigned: Oct 7, 0 Due: Nov, 0 :0 PM in class Lead TA: Charles Guo Layering/Tunneling [Sec..9] The figure below shows how two private, physically

More information

Chapter 5 Link Layer. Computer Networking: A Top Down Approach. 6 th edition Jim Kurose, Keith Ross Addison-Wesley March 2012

Chapter 5 Link Layer. Computer Networking: A Top Down Approach. 6 th edition Jim Kurose, Keith Ross Addison-Wesley March 2012 Chapter 5 Link Layer Computer Networking: A Top Down Approach 6 th edition Jim Kurose, Keith Ross Addison-Wesley March 2012 All material copyright 1996-2012 J.F Kurose and K.W. Ross, All Rights Reserved

More information

Packet Tracer - Investigating the TCP/IP and OSI Models in Action (Instructor Version Optional Packet Tracer)

Packet Tracer - Investigating the TCP/IP and OSI Models in Action (Instructor Version Optional Packet Tracer) (Instructor Version Optional Packet Tracer) Instructor Note: Red font color or gray highlights indicate text that appears in the instructor copy only. Optional activities are designed to enhance understanding

More information

Copyright 2011 Sakun Sharma

Copyright 2011 Sakun Sharma Communication at Network Layer (Layer 3) Network layer is layer 3 of OSI Model. Network layer adds support of connecting multiple networks with each other. Network layer uses its own unique addressing

More information

Chapter 20 Network Layer: Internet Protocol 20.1

Chapter 20 Network Layer: Internet Protocol 20.1 Chapter 20 Network Layer: Internet Protocol 20.1 Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display. 20-1 INTERNETWORKING In this section, we discuss internetworking,

More information

Router Router Microprocessor controlled traffic direction home router DSL modem Computer Enterprise routers Core routers

Router Router Microprocessor controlled traffic direction home router DSL modem Computer Enterprise routers Core routers Router Router is a Microprocessor controlled device that forwards data packets across the computer network. It is used to connect two or more data lines from different net works. The function of the router

More information

Connecting to the Network

Connecting to the Network Connecting to the Network Networking for Home and Small Businesses Chapter 3 1 Objectives Explain the concept of networking and the benefits of networks. Explain the concept of communication protocols.

More information

UNIVERSITY OF TORONTO ELECTRICAL AND COMPUTER ENGINEERING ECE 361 Test February 2, 2012

UNIVERSITY OF TORONTO ELECTRICAL AND COMPUTER ENGINEERING ECE 361 Test February 2, 2012 Student Number: UNIVERSITY OF TORONTO ELECTRICAL AND COMPUTER ENGINEERING ECE 361 Test February 2, 2012 ECE 361 Computer Networks This test is Closed Book 75 Minutes Examiner: A. Leon-Garcia Question Mark

More information

INTERNET & WORLD WIDE WEB (UNIT-1) MECHANISM OF INTERNET

INTERNET & WORLD WIDE WEB (UNIT-1) MECHANISM OF INTERNET INTERNET & WORLD WIDE WEB (UNIT-1) MECHANISM OF INTERNET 1. INTRODUCTION Hello friends are topic is Internet and World Wide Web the most popular services of our topic is social networking and online shopping

More information

Lecture 7: Ethernet Hardware Addressing and Frame Format. Dr. Mohammed Hawa. Electrical Engineering Department, University of Jordan.

Lecture 7: Ethernet Hardware Addressing and Frame Format. Dr. Mohammed Hawa. Electrical Engineering Department, University of Jordan. Lecture 7: Ethernet Hardware Addressing and Frame Format Dr. Mohammed Hawa Electrical Engineering Department University of Jordan EE426: Communication Networks MAC Addresses The shared medium in a LAN

More information

Protocol Layers & Wireshark TDTS11:COMPUTER NETWORKS AND INTERNET PROTOCOLS

Protocol Layers & Wireshark TDTS11:COMPUTER NETWORKS AND INTERNET PROTOCOLS Protocol Layers & Wireshark TDTS11:COMPUTER NETWORKS AND INTERNET PROTOCOLS Mail seban649@student.liu.se Protocol Hi Hi Got the time? 2:00 time TCP connection request TCP connection response Whats

More information

Chapter 3 Part 2 Switching and Bridging. Networking CS 3470, Section 1

Chapter 3 Part 2 Switching and Bridging. Networking CS 3470, Section 1 Chapter 3 Part 2 Switching and Bridging Networking CS 3470, Section 1 Refresher We can use switching technologies to interconnect links to form a large network What is a hub? What is a switch? What is

More information

COSC 6377 Mid-Term #2 Fall 2000

COSC 6377 Mid-Term #2 Fall 2000 Name: SSN: Signature: Open book, open notes. Your work must be your own. Assigned seating. Test time: 7:05pm to 8:05pm. You may not use a calculator or PalmPilot to calculate subnetting/host/netid information.

More information

Cisco Exam Cisco Certified Network Associate (CCNA) Version: 14.7 [ Total Questions: 653 ]

Cisco Exam Cisco Certified Network Associate (CCNA) Version: 14.7 [ Total Questions: 653 ] s@lm@n Cisco Exam 640-802 Cisco Certified Network Associate (CCNA) Version: 14.7 [ Total Questions: 653 ] Topic 1, Describe how a network works Cisco 640-802 : Practice Test Question No : 1 - (Topic 1)

More information

Second Midterm Exam Solution CMPSCI 591 and 453: Computer Networks Spring 2005 Prof. Jim Kurose

Second Midterm Exam Solution CMPSCI 591 and 453: Computer Networks Spring 2005 Prof. Jim Kurose Second Midterm Exam Solution CMPSCI 591 and 53: Computer Networks Spring 2005 Prof. Jim Kurose Question 1. (5 points) In network assisted congestion control, a router actively informs an end system about

More information

MID-TERM EXAM TCP/IP NETWORKING Duration: 2 hours With Solutions

MID-TERM EXAM TCP/IP NETWORKING Duration: 2 hours With Solutions MID-TERM EXAM TCP/IP NETWORKING Duration: 2 hours With Solutions Jean-Yves Le Boudec 2005 December 8 Do not forget to put your names on all sheets of your solution. If you need to make assumptions in order

More information

ECE 461 Internetworking Fall Quiz 1

ECE 461 Internetworking Fall Quiz 1 ECE 461 Internetworking Fall 2013 Quiz 1 Instructions (read carefully): The time for this quiz is 50 minutes. This is a closed book and closed notes in-class exam. Non-programmable (Type 2) calculators

More information

Expert Reference Series of White Papers. Securing Layer 2

Expert Reference Series of White Papers. Securing Layer 2 Expert Reference Series of White Papers Securing Layer 2 1-800-COURSES www.globalknowledge.com Securing Layer 2 Carol Kavalla, Global Knowledge Instructor Introduction For many years network administrators

More information

OSI Network Layer. Network Fundamentals Chapter 5. Version Cisco Systems, Inc. All rights reserved. Cisco Public 1

OSI Network Layer. Network Fundamentals Chapter 5. Version Cisco Systems, Inc. All rights reserved. Cisco Public 1 OSI Network Layer Network Fundamentals Chapter 5 Version 4.0 1 Objectives Identify the role of the Network Layer, as it describes communication from one end device to another end device. Examine the most

More information

Computer Networks, Andrew Tannenbaum, Chapter 5.6. Computer Networking: A Top Down Approach Featuring the

Computer Networks, Andrew Tannenbaum, Chapter 5.6. Computer Networking: A Top Down Approach Featuring the Mobile IP (IPv4 and IPv6) Dr. John Keeney 3BA33 Elements of a wireless Wired infrastructure wireless hosts laptop, PDA, IP phone run applications may be stationary (nonmobile) or mobile wireless does not

More information

Spy vs. Spy: Rumor Source Obfuscation

Spy vs. Spy: Rumor Source Obfuscation Spy vs. Spy: Rumor Source Obfuscation Peter Kairouz University of Illinois at Urbana-Champaign Joint work with Giulia Fanti, Sewoong Oh, and Pramod Viswanath Some people have important, sensitive things

More information

Outline. Inter-Process Communication. IPC across machines: Problems. CSCI 4061 Introduction to Operating Systems

Outline. Inter-Process Communication. IPC across machines: Problems. CSCI 4061 Introduction to Operating Systems Outline CSCI 4061 Introduction to Operating Systems ing Overview Layering and Protocols TCP/IP Protocol Family Client-Server Model Instructor: Abhishek Chandra 2 Inter-Process Communication Intra-node:

More information

Last Lecture. Network Architecture: Layers. This Lecture. In the sending host (2) In the sending host

Last Lecture. Network Architecture: Layers. This Lecture. In the sending host (2) In the sending host Chapter 7.B and 7.C Architecture: Layers Prof. Dina Katabi Last Lecture We learned how to share the network infrastructure between many connections/flows We also learned about the implications of the sharing

More information

Static Routing Design Exercises

Static Routing Design Exercises Static Routing Design Exercises Mario Baldi Flavio Marinone Fulvio Risso Static_routing_ex - 1 Copyright notice: page 2 Copyright notice This set of transparencies, hereinafter referred to as slides, is

More information

Internet Routing Protocols Part II

Internet Routing Protocols Part II Indian Institute of Technology Kharagpur Internet Routing Protocols Part II Prof. Indranil Sen Gupta Dept. of Computer Science & Engg. I.I.T. Kharagpur, INDIA Lecture 8: Internet routing protocols Part

More information

Chapter 7. OSI Data Link Layer. CCNA1-1 Chapter 7

Chapter 7. OSI Data Link Layer. CCNA1-1 Chapter 7 Chapter 7 OSI Data Link Layer CCNA1-1 Chapter 7 Note for Instructors These presentations are the result of a collaboration among the instructors at St. Clair College in Windsor, Ontario. Thanks must go

More information

Chapter 7. OSI Data Link Layer

Chapter 7. OSI Data Link Layer Chapter 7 OSI Data Link Layer CCNA1-1 Chapter 7 Note for Instructors These presentations are the result of a collaboration among the instructors at St. Clair College in Windsor, Ontario. Thanks must go

More information

Chapter 2 Communicating Over the Network

Chapter 2 Communicating Over the Network Chapter 2 Communicating Over the Network Elements of Communication Communicating the Messages Continuous stream of bits 00101010100101010101010101010101010 I have to wait Single communications (e.g. video,

More information

ECE 4450:427/527 - Computer Networks Spring 2017

ECE 4450:427/527 - Computer Networks Spring 2017 ECE 4450:427/527 - Computer Networks Spring 2017 Dr. Nghi Tran Department of Electrical & Computer Engineering Lecture 6.2: IP Dr. Nghi Tran (ECE-University of Akron) ECE 4450:427/527 Computer Networks

More information

CS 349/449 Internet Protocols Midterm Exam Winter /21/2003

CS 349/449 Internet Protocols Midterm Exam Winter /21/2003 CS 349/449 Internet Protocols Midterm Exam Winter 2003 10/21/2003 Question 349 Points 449 Points Score 1 10 10 2 20 10 3 20 20 4 20 20 5 30 20 6 (449 only) - 20 Total: 100 100 Name: Instructions: 1. You

More information

Cisco Interconnecting Cisco Networking Devices Part 2

Cisco Interconnecting Cisco Networking Devices Part 2 Cisco 200-105 Interconnecting Cisco Networking Devices Part 2 R1# show running-config description ***Loopback*** ip address 192.168.1.1 255.255.255.255 Question: 374 description **Connected to R1-LAN**

More information

CNPE Communications and Networks Lab Book: Data Transmission Over Digital Networks

CNPE Communications and Networks Lab Book: Data Transmission Over Digital Networks Lab Book: Data Transmission Over Digital Networks Contents Data Transmission Over Digital Networks... 3 Lab Objectives... 3 Lab Resources... 3 Task 1 Build the Home Network... 3 Task 2 Configure IP Addresses...

More information

ECE 544 Protocol Design Project Team Member Names Aneesh Abhyankar Satakshi Tiwari Vishalsingh Hajeri

ECE 544 Protocol Design Project Team Member Names Aneesh Abhyankar Satakshi Tiwari Vishalsingh Hajeri ECE 544 Protocol Design Project 2016 Team Member Names Aneesh Abhyankar Satakshi Tiwari Vishalsingh Hajeri Network Architecture & Topology Assumptions Service Objective: k-out-of-n packet datagram multicast

More information

Hubs. twisted pair. hub. 5: DataLink Layer 5-1

Hubs. twisted pair. hub. 5: DataLink Layer 5-1 Hubs Hubs are essentially physical-layer repeaters: bits coming from one link go out all other links at the same rate no frame buffering no CSMA/CD at : adapters detect collisions provides net management

More information

CS 3516: Computer Networks

CS 3516: Computer Networks Welcome to CS 3516: Computer Networks Prof. Yanhua Li Time: 9:00am 9:50am M, T, R, and F Location: AK 219 Fall 2018 A-term 1 Some slides are originally from the course materials of the textbook Computer

More information

A.1 Routing Header Pseudo Code

A.1 Routing Header Pseudo Code 56982_AppA 12/12/97 4:06 PM Page 241 Appendix A A.1 Routing Header Pseudo Code This section contains the pseudo code for the processing of the Routing header, excerpted from the RFC 1883. 1 See also Section

More information

EXAM Interconnecting Cisco Networking Devices Part 1 (ICND1) v3. For More Information:

EXAM Interconnecting Cisco Networking Devices Part 1 (ICND1) v3. For More Information: Page No 1 Cisco 100-105 EXAM Interconnecting Cisco Networking Devices Part 1 (ICND1) v3 Product: Demo For More Information: 100-105-dumps-questions Page No 2 Question: 1 Which three statements are true

More information

Network Models. Behrouz A. Forouzan Data communication and Networking Fourth edition

Network Models. Behrouz A. Forouzan Data communication and Networking Fourth edition Chapter 2 Network Models Behrouz A. Forouzan Data communication and Networking Fourth edition 1 Layered Tasks We use the concept of layers in our daily life. As an example, let us consider two friends

More information

ES623 Networked Embedded Systems

ES623 Networked Embedded Systems ES623 Networked Embedded Systems Introduction to Network models & Data Communication 16 th April 2013 OSI Models An ISO standard that covers all aspects of network communication is the Open Systems Interconnection

More information

Lab - Using Wireshark to Examine a UDP DNS Capture

Lab - Using Wireshark to Examine a UDP DNS Capture Topology Objectives Part 1: Record a PC s IP Configuration Information Part 2: Use Wireshark to Capture DNS Queries and Responses Part 3: Analyze Captured DNS or UDP Packets Background / Scenario If you

More information

CS 268: Computer Networking. Taking Advantage of Broadcast

CS 268: Computer Networking. Taking Advantage of Broadcast CS 268: Computer Networking L-12 Wireless Broadcast Taking Advantage of Broadcast Opportunistic forwarding Network coding Assigned reading XORs In The Air: Practical Wireless Network Coding ExOR: Opportunistic

More information

3.5 CONNECTING DEVICES

3.5 CONNECTING DEVICES 3.5 CONNECTING DEVICES LANs or WANs do not normally operate in isolation. They are connected to one another or to the Internet. To connect LANs and WANs together we use connecting devices. Connecting devices

More information

Lecture 6. Internet Security: How the Internet works and some basic vulnerabilities. Thursday 19/11/2015

Lecture 6. Internet Security: How the Internet works and some basic vulnerabilities. Thursday 19/11/2015 Lecture 6 Internet Security: How the Internet works and some basic vulnerabilities Thursday 19/11/2015 Agenda Internet Infrastructure: Review Basic Security Problems Security Issues in Routing Internet

More information

Lab - Using Wireshark to Examine a UDP DNS Capture

Lab - Using Wireshark to Examine a UDP DNS Capture Topology Objectives Part 1: Record a PC s IP Configuration Information Part 2: Use Wireshark to Capture DNS Queries and Responses Part 3: Analyze Captured DNS or UDP Packets Background / Scenario If you

More information

IPv6. IPv4 & IPv6 Header Comparison. Types of IPv6 Addresses. IPv6 Address Scope. IPv6 Header. IPv4 Header. Link-Local

IPv6. IPv4 & IPv6 Header Comparison. Types of IPv6 Addresses. IPv6 Address Scope. IPv6 Header. IPv4 Header. Link-Local 1 v4 & v6 Header Comparison v6 Ver Time to Live v4 Header IHL Type of Service Identification Protocol Flags Source Address Destination Address Total Length Fragment Offset Header Checksum Ver Traffic Class

More information

The OSI Model and the TCP/IP Protocol Suite Outline: 1. Protocol Layers 2. OSI Model 3. TCP/IP Model 4. Addressing

The OSI Model and the TCP/IP Protocol Suite Outline: 1. Protocol Layers 2. OSI Model 3. TCP/IP Model 4. Addressing The OSI Model and the TCP/IP Protocol Suite Outline: 1. Protocol Layers 2. OSI Model 3. TCP/IP Model 4. Addressing OBJECTIVES To discuss the OSI model and its layer architecture and to show the interface

More information

A SIMPLE INTRODUCTION TO TOR

A SIMPLE INTRODUCTION TO TOR A SIMPLE INTRODUCTION TO TOR The Onion Router Fabrizio d'amore May 2015 Tor 2 Privacy on Public Networks Internet is designed as a public network Wi-Fi access points, network routers see all traffic that

More information

Implementing IP in IP Tunnel

Implementing IP in IP Tunnel This chapter module provides conceptual and configuration information for IP in IP tunnels on Cisco ASR 9000 Series Router. Note For a complete description of the IP in IP tunnel commands listed in this

More information

VIDEOCONFERENCE & PRESENTATION REFERENCE GUIDE

VIDEOCONFERENCE & PRESENTATION REFERENCE GUIDE VIDEOCONFERENCE & PRESENTATION REFERENCE GUIDE Welcome Welcome to the Faculty of Medicine Videoconference Service. Your call will be connected automatically for you. If your call does not begin as scheduled,

More information

SIMPLE ROUTER PROJECT 2

SIMPLE ROUTER PROJECT 2 SIMPLE ROUTER PROJECT 2 RECAP We re writing a router in C We re working with a virtual network topology (VNS) The router will route real IP packets from standard clients like ping and traceroute It s due

More information

IPv6 Protocols and Networks Hadassah College Spring 2018 Wireless Dr. Martin Land

IPv6 Protocols and Networks Hadassah College Spring 2018 Wireless Dr. Martin Land IPv6 1 IPv4 & IPv6 Header Comparison IPv4 Header IPv6 Header Ver IHL Type of Service Total Length Ver Traffic Class Flow Label Identification Flags Fragment Offset Payload Length Next Header Hop Limit

More information