CHAPTER 2: NETWORKS AND THE INTERNET Multiple Choice What type of cable most networks use? A Net cable B Category cable C Phone cable D Category cable The answer is D 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 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 The answer is A The simplest device for connecting computers is called what? A NIC B Interface C Hub D Router The answer is C What is a NIC? A Network interface card B Network interaction card C Network interface connector D Network interaction connector The answer is A A device used to connect two or more networks together is a what? A Switch B Router C Hub D NIC The answer is B A T1 line sends data at what speed? A 100Mbps B 1.54Mbps C 155Mbps D 56.6Kbps The answer is B 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 The answer is B A protocol that translates web addresses into IP addresses is called what? A DNS B TFTP C DHCP D SMTP The answer is A 10.What protocol is used to send email, and on what port does it work? A SMTP, port 110 B POP3, port 25 C SMTP, port 25 D POP3, port 110 The answer is C 11.What protocol is used for remotely logging on to a computer? A Telnet B HTTP C DNS D SMTP The answer is A 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 21 The answer is B 13.The point where the backbones of the Internet connect is called what? A Connectors B Routers C Network access points D Switches The answer is C 14.Which of the following is not a valid IP address? A 127.0.0.1 B 295.253.254.01 C 127.256.5.2 D 245.200.11.1 The answer is B 15.What class would the IP address of 193.44.34.12 be? A A B B C C D D The answer is C 16.The IP address of 127.0.0.1 always refers to your what? A Nearest router B ISP C Self D Nearest NAP The answer is C 17.Internet addresses of the form www.chuckeasttom.com are called what? A User-friendly web addresses B Uniform resource locators C User-accessible web addresses D Uniform address identifiers The answer is B 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 The answer is A 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 The answer is A 20.Vince Cerf invented what? A The World Wide Web B Email C TCP D The first computer virus The answer is C The answer is A 21.Tim Berners-Lee invented what? A The World Wide Web B Email C TCP D The first computer virus The answer is A 22.Which utility gives you information about your machine’s network configuration? A Ping B IPConfig C Tracert D MyConfig The answer is B 23.The TCP protocol operates at what layer of the OSI model? A Transport B Application C Network D Data link The answer is A 24.Which layer of the OSI model is divided into two sublayers? A Data link B Network C Presentation D Session The answer is A 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 The answer is B Fill in the Blank: 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 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 Reference: The Physical Connection: Local Networks Reference: The Physical Connection: Internet Reference: IP Addresses Difficulty: easy , a commonly used DOS command, sends a test packet to determine whether a machine is reachable Answer: Ping Difficulty: moderate A(n) is a special IP number (127.0.0.1) that designates the machine you are on regardless of its IP address Answer: loop back address Difficulty: easy The basic purpose of a cable is to transmit from one machine to another Answer: packets Difficulty: moderate The number of bits that a cable can transmit is called Answer: bandwidth Difficulty: easy Reference: Basic Network Utilities Difficulty: easy The purpose of a is to hide your network from the outside world Answer: proxy server Reference: Other Network Devices Difficulty: easy Matching: 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 E Provides error control between adjacent nodes Network 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 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 Answer: D C A B 10 D Translates domain names into IP addresses Reference: DNS Servers Difficulty: moderate Match the following cable types and their uses: I Analog II Up to 20 MHz /16 Mbps B Telephone A Voice transmission III 100 MHz/100 Mbps C High-speed networks IV 250 MHz/1,000 Mbps D Standard speed networks Answer: B A D C 11 Difficulty: hard Reference: The Physical Connection: Local Networks 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 Answer: C A D B 12 Difficulty: moderate D Protocol that does not guarantee delivery of packets Reference: Data Transmission Difficulty: moderate 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 V 500 series Answer: B D E A C 13 E Messages indicate that the Web site has moved Reference: Uniform Resource Locators Difficulty: hard 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 III Tracert way Answer: C D B A C Used to send a test packet and determine whether an IP address is reachable D Parameters that can be passed to commands to make the computer behave in a certain Reference: Basic Network Utilities Difficulty: easy ... Nearest router B ISP C Self D Nearest NAP The answer is C 17.Internet addresses of the form www.chuckeasttom.com are called what? A User-friendly web addresses B Uniform resource locators C User-accessible... Wide Web B Email C TCP D The first computer virus The answer is C The answer is A 21.Tim Berners-Lee invented what? A The World Wide Web B Email C TCP D The first computer virus The answer is A 22.Which... A MAC ID The answer is B Fill in the Blank: 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