CHAPTER 2: NETWORKS AND THE INTERNET

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Albert Singleton
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1 CHAPTER 2: NETWORKS AND THE INTERNET Multiple Choice 1. What type of cable do most networks use? A. Net cable B. Category 3 cable C. Phone cable D. Category 5 cable The answer is D 2. The connector used with network cables is called what? A. RJ-11 B. RJ-85 C. RJ-12 D. RJ-45 The answer is D 3. The cable used in networks is also referred to as what? A. Unshielded twisted pair B. Shielded twisted pair C. Unshielded untwisted pair D. Shielded untwisted pair 4. The simplest device for connecting computers is called what? A. NIC B. Interface C. Hub D. Router 1

2 5. What is a NIC? A. Network interface card. B. Network interaction card C. Network interface connector D. Network interaction connector 6. A device used to connect two or more networks together is a what? A. Switch B. Router C. Hub D. NIC 7. A T1 line sends data at what speed? A. 100Mbps B. 1.54Mbps C. 155Mbps D. 56.6Kbps 8. How big is a TCP packet header? A. The size is dependent on the data being sent. B. The size is always 20 bytes. C. The size is dependent on the protocol being used. D. The size is always 40 bytes. 9. A protocol that translates web addresses into IP addresses is called what? A. DNS B. TFTP C. DHCP 2

3 D. SMTP 10.What protocol is used to send , and on what port does it work? A. SMTP, port 110 B. POP3, port 25 C. SMTP, port 25 D. POP3, port What protocol is used for remotely logging on to a computer? A. Telnet B. HTTP C. DNS D. SMTP 12.What protocol is used for web pages, and what port does it work on? A. HTTP, port 21 B. HTTP, port 80 C. DHCP, port 80 D. DHCP, port The point where the backbones of the Internet connect is called what? A. Connectors B. Routers C. Network access points D. Switches 14.Which of the following is not a valid IP address? A B

4 C D What class would the IP address of be? A. A B. B C. C D. D 16.The IP address of always refers to your what? A. Nearest router B. ISP C. Self D. Nearest NAP 17.Internet addresses of the form are called what? A. User-friendly web addresses B. Uniform resource locators C. User-accessible web addresses D. Uniform address identifiers 18.Which U.S. government agency created the distributed network that formed the basis for the Internet? A. Advanced Research Projects Agency B. Central Intelligence Agency C. NASA D. Department of Energy 4

5 19.Which of the following was one of the three universities involved in the original distributed network setup by a government agency? A. Berkeley B. Harvard C. MIT D. Princeton 20.Vince Cerf invented what? A. The World Wide Web B. C. TCP D. The first computer virus 21.Tim Berners-Lee invented what? A. The World Wide Web B. C. TCP D. The first computer virus 22.Which utility gives you information about your machine s network configuration? A. Ping B. IPConfig C. Tracert D. MyConfig 23.The TCP protocol operates at what layer of the OSI model? A. Transport B. Application C. Network 5

6 D. Data link 24.Which layer of the OSI model is divided into two sublayers? A. Data link B. Network C. Presentation D. Session 25.A unique hexadecimal number that identifies your network card is called what? A. A NIC address B. A MAC address C. A NIC ID D. A MAC ID Fill in the Blank: 1. A(n) is a card that allows a computer to connect to another computer or to a network. Answer: Network Interface Card (NIC) Reference: Network Basics 6 Difficulty: easy 2. The is the method that a secondary DNS server uses to update its information from the primary DNS server. Answer: zone transfer Reference: DNS Servers Difficulty: moderate 3. The number of bits that a cable can transmit is called. Answer: bandwidth Reference: The Physical Connection: Local Networks Difficulty: easy 4. The basic purpose of a cable is to transmit from one machine to another. Answer: packets Reference: The Physical Connection: Internet Difficulty: moderate 5. A(n) is a special IP number ( ) that designates the machine you are on regardless of its IP address. Answer: loop back address Reference: IP Addresses Difficulty: easy 6., a commonly used DOS command, sends a test packet to determine whether a machine is reachable. Answer: Ping Reference: Basic Network Utilities Difficulty: easy 7. The purpose of a is to hide your network from the outside world.

7 Answer: proxy server Reference: Other Network Devices Difficulty: easy Matching: 8. Match the following terms to their meanings: I. Application A. Connects the entity to the transmission media II. Presentation B. Provides end-to-end communication control III. Session C. Handles problems that are not communication issues IV. Transport D. Converts the information V. Network E. Provides error control between adjacent nodes VI. Data link F. Routes the information in the network VII. Physical G. Provides different services to the applications Answer: G D C B F E A Reference: The OSI Model Difficulty: hard 9. Match the following terms to their meanings: I. Domain Name Server (DNS) A. Holds duplicate URL/IP information II. Primary DNS B. Sends changes from one server to another III. Secondary DNS C. Holds the master copy of URL/IP information IV. Zone transfer D. Translates domain names into IP addresses Answer: D C A B Reference: DNS Servers Difficulty: moderate 10. Match the following cable types and their uses: I. Analog A. Voice transmission II. Up to 20 MHz /16 Mbps B. Telephone III. 100 MHz/100 Mbps C. High-speed networks IV. 250 MHz/1,000 Mbps D. Standard speed networks Answer: B A D C Reference: The Physical Connection: Local Networks Difficulty: moderate 11. Match the following terms to their meanings: I. TCP A. Protocol that specifies the format and addressing scheme of a packet II. IP B. Protocol used to extract error and control messages III. UDP C. Protocol that establishes a connection for the exchange of data IV. ICMP D. Protocol that does not guarantee delivery of packets Answer: C A D B Reference: Data Transmission Difficulty: moderate 12. Match the following code series message to their meaning: I. 100 series A. Messages refer to client errors II. 200 series B. Messages are simply informational III. 300 series C. Messages refer to server errors IV. 400 series D. Messages indicate successful connections 7

8 V. 500 series E. Messages indicate that the Web site has moved Answer: B D E A C Reference: Uniform Resource Locators Difficulty: hard 13. Match the following terms to their meanings: I. Ping A. Shows how many hops a packet needs to reach a host and the length of time II. flag B. Gives information about your connection to the Internet II. IPConfig C. Used to send a test packet and determine whether an IP address is reachable III. Tracert D. Parameters that can be passed to commands to make the computer behave in a certain way Answer: C D B A Reference: Basic Network Utilities Difficulty: easy 8

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