Review: Networking Fall Final

Transcription

1 Review: Networking Fall Final Question 1 of 43 You have implemented a network where each device provides shared files with all other devices on the network. What type of network do you have? Peer to peer Client/server Polling Multiple access Question 2 of 43 You have implemented a network where hosts are assigned specific roles, such as for file sharing and printing. Other hosts access those resources but do not host services of their own. What type of network do you have? Peer to peer Client server Intranet Extranet Question 3 of 43 Which of the following geographic network types are typically managed by a city as a public utility? Personal Area Network (PAN) Local Area Network (LAN) Wide Area Network (WAN) Metropolitan Area Network (MAN) Question 4 of 43 What is the basic purpose of the OSI Physical layer? Coordinates rules for transmitting bits. Defines basic physical structures, such as disks. Coordinates rules for routing packets. Coordinates rules for managing network servers. Question 5 of 43 Which protocol is used on the World Wide Web to transmit Web pages to Web browsers? HTTP HTML SMTP NNTP v /startlabsim.html?culture=en us 1/9

2 Question 6 of 43 Your company has just acquired another company in the same city. You are given the task of integrating the two e mail systems so that messages can be exchanged between the e mail servers. However, each network uses an e mail package from a different vendor. Which TCP/IP protocol will enable messages to be exchanged between systems? SMTP ICMP IMAP4 FTP POP3 Question 7 of 43 You are an application developer and are writing a program to exchange video files through a TCP/IP network. You need to select a transport protocol that will guarantee delivery. Which TCP/IP protocol would you implement that provides this capability? TCP UDP IP RIP FTP TFTP Question 8 of 43 What protocol sends e mail to a mail server? SMTP FTP SNMP POP3 TFTP Question 9 of 43 Which of the following protocols stores on the mail server and gives users a choice to download mail or keep it on the server? IMAP4 SMTP POP3 NTP Question 10 of 43 Which protocol is used for securely browsing a website? HTTPS SSH UDP v /startlabsim.html?culture=en us 2/9

3 SIP ARP Question 11 of 43 You are installing networking wiring for a new Ethernet network at your company's main office building. The project specifications call for Category 5 UTP network cabling and RJ 45 wall jacks. Near the end of the project, you run out of wire before the last few runs are complete. You have a spool of Category 3 network cable in storage. Upon investigation, it appears very similar to Category 5 wiring. Should you substitute Category 3 cabling for Category 5 cabling to finish the project? Yes, you can substitute Category 5 wiring with Category 3 wiring, as they are electrically identical. No, the sheath surrounding Category 5 cable is much thicker; creating an extra layer of shielding to reduce cross talk and support higher data rates. No, Category 5 cabling has more twists per inch than Category 3 cabling to reduce cross talk and support higher data rates. No, Category 5 cabling uses a thicker copper wire than Category 3 cable; enabling higher data transmission rates. No, Category 3 cabling doesn't support RJ 45 connectors. Question 12 of 43 You are adding new wires in your building for some new offices. The building has a false ceiling that holds the lights. You would like to run your Ethernet cables in this area. Which type of cable must you use? Plenum Cat 5e or Cat 6e PVC Fiber optic STP Question 13 of 43 In which of the following situations might you use an RJ 11 connector? You want to connect the 10BaseT network card in your computer to a switch. You want to connect your computer to the Internet with a dial up connection. You want to upgrade your 10BaseT network to 100BaseT. You want to test a network cable to see if there is a break in the line. Question 14 of 43 Which of the following cable classifications are typically used for cable and satellite networking with coaxial cables? (Select two.) RG 6 RG 8 RG 58 RG 59 Question 15 of 43 You have a small home network connected to the Internet using an RG 6 cable. You need to move the router connecting the network to the Internet, but can't find any RG 6 cable. Which cable types could you use instead? v /startlabsim.html?culture=en us 3/9

4 RG 59 RG 8 RG 58 RG 8 or RG 58 RG 58 or RG 59 RG 8, RG 58, or RG 59 Question 16 of 43 Of the following cables, which offer the best protection against EMI? Cat 5 Cat 5e Cat 6e RG 6 Question 17 of 43 Which of the following are advantages of using fiber optic cabling for a network, as opposed to other types of cabling? (Select two.) Greater cable distances without a repeater Immunity to electromagnetic interference Lower installation cost Faster installation Question 18 of 43 Of the following cables, which offer the best protection against EMI? Cat 5 Cat 5e RG 6 Single mode fiber optic Question 19 of 43 You are building network cables and attaching RJ45 connectors to each end. Which tool do you need for this task? Crimping tool Punch down tool Needle nose pliers Vampire taps Question 20 of 43 Which of the following connector types are used with UTP cables? (Select two.) RJ11 RJ45 BNC v /startlabsim.html?culture=en us 4/9

5 F Type SC Question 21 of 43 Which of the following methods would you use to create a crossover cable? Use the T568A standard. Use the T568B standard. Use the T568A standard on one connector, and the T568B standard on the other connector. Use the T568A standard on one connector, and the BLOG convention on the other connector. Use the T568B standard on one connector, and the BLOG convention on the other connector. Question 22 of 43 Which network component connects a device with the transmission media and allows it to send and receive messages? Client Network interface card Peripheral Protocol Server Question 23 of 43 Which of the following statements accurately describes how a modem works? (Select two.) It communicates over a telephone network using digital signals. It modulates digital data from the PC into analog data and transmits it on a telephone network. It modulates digital data from a telephone network into analog data that a PC can use. It transmits digital signals over ordinary telephone copper wiring at a rate up to 128 Kbps. It demodulates analog data from a telephone network into digital PC data. It demodulates analog PC data into digital data that can be transmitted through a telephone network. Question 24 of 43 Which of the following is a valid MAC address? C0 34 FF E 34 9A 86 1G B A 5B 0B F1 Question 25 of 43 Which of the following is true about the MAC address? (Select two.) v /startlabsim.html?culture=en us 5/9

6 It is a 48 bit address. It is a 32 bit address. It is a 64 bit address. It is typically represented by hexadecimal numbers. It is typically represented by octets of decimal numbers between Question 26 of 43 Which of the following hardware devices regenerates a signal out all connected ports without examining the frame or packet contents? (Select two.) Router Bridge Switch Gateway Hub Repeater Question 27 of 43 Which of the following hardware devices links multiple networks and directs traffic between networks? Router Bridge Hub Repeater Question 28 of 43 You are the network administrator for a small organization. Recently, you contracted with an ISP to connect your organization's network to the Internet to provide users with Internet access. Since doing so, it has come to your attention that an intruder has invaded your network from the Internet on three separate occasions. What type of network hardware should you implement to prevent this from happening again? Router Switch CSU/DSU Proxy server Hub Firewall Question 29 of 43 Which of the following is a good reason to install a firewall? To cache web pages To limit public access to just your DHCP server instead of your whole network To translate between Internet IP addresses and the IP addresses on your private network To prevent hackers from accessing your network v /startlabsim.html?culture=en us 6/9

7 Question 30 of 43 The media access control method of all Ethernet networks is. CSMA/CD CSMA/CA Token passing Polling Question 31 of 43 You need to transfer data from one laptop to another and would like to use an Ethernet cable. You do not have a hub or a switch. Which type of cable should you use? Rollover Crossover Straight through Loopback Question 32 of 43 You have a network connected using a physical bus topology. One of the cables connecting a workstation to the bus breaks. Which of the following best describes what happens to network communications? No devices will be able to communicate. All devices except the device connected with the drop cable will be able to communicate. Devices on one side of the break will be able to communicate with each other; devices on the other side of the break will be able to communicate with each other. Devices on one side of the break will be able to communicate with each other; devices on the other side will not be able to communicate. All devices will be able to communicate. Question 33 of 43 You have been asked to document the wiring in your building. You would like to identify the length of each Cat5 cable to verify that it meets Ethernet standards. You need to identify the length of the cables, but most cables run through walls and ceilings, making them difficult to trace. Which tool should you use? TDR OTDR Toner probe Butt set Smart jack Question 34 of 43 You're responsible for implementing network cabling in a new network installation. The cabling will be installed in a manufacturing environment where there is a great deal of electromagnetic interference (EMI). Which type of cabling would operate best in this environment? (Choose two.) Category 3 unshielded twisted pair cable Category 5 unshielded twisted pair cable v /startlabsim.html?culture=en us 7/9

8 Shielded twisted pair cable RG 58 coaxial cable RG 59 coaxial cable Fiber optic cable Question 35 of 43 A user from the Sales department calls to report that he is experiencing problems connecting to the Sales file server. All users in the Sales department connect to the Sales server through a single Ethernet switch. No other users have reported problems connecting to the Sales server. Which of the following troubleshooting actions are you most likely to perform first? Reinstall the network card drivers on the Sales server Replace the Ethernet switch in the Sales department Replace the network card in the Sales server Replace the network card in the user's computer Question 36 of 43 Users are complaining that sometimes network communications are slow. You use a protocol analyzer and find that packets are being corrupted as they pass through a switch. You also notice that this only seems to happen when the elevator is running. What should you do? Install a dedicated power circuit for the switch Install shielded cables near the elevator Add a UPS system to the switch Add a dedicated A/C unit to the switch closet Question 37 of 43 You want to measure the voltage, amps, and ohms of various devices. Which tool should you use? Butt set Multimeter Certifier Toner probe voltage event recorder Question 38 of 43 Which of the following is a valid IPv4 address? (Select two.) v /startlabsim.html?culture=en us 8/9

9 Question 39 of 43 Which of the following is the first IP address that can be assigned to hosts on the network using the default subnet mask? Question 40 of 43 Which of the following IP address ranges is reserved for Automatic Private IP Addressing? Question 41 of 43 Which two of the following statements about the Dynamic Host Configuration Protocol (DHCP) are true? It is used only to deliver IP addresses to hosts. It can deliver other configuration information in addition to IP addresses. A DHCP server assigns addresses to requesting hosts. It cannot be configured to assign the same IP address to the same host each time it boots. Question 42 of 43 You have a network with 50 workstations. You want to automatically configure workstations with the IP address, subnet mask, and default gateway values. Which device should you use? Gateway Router DHCP server DNS server Question 43 of 43 You need to enable hosts on your network to find the IP address of logical names such as srv1.myserver.com. Which device would you use? DNS server Bandwidth shaper IDS IPS Load balancer v /startlabsim.html?culture=en us 9/9