attached is a quiz that I'd like to have the solution for

 

 

1/24/2017 CST 161 Midterm Exam 1. Telecommunications is the transmission of voice and video as well as data and implies transmitting a
longer distance than in a data communication network. a. true b. false
Q2. A metropolitan area network is: a. a high speed central network, built with privately owned media, which connects other networks in a distance
spanning up to several miles. b. a group of microcomputers or terminals located in the same general area and connected by a common cable
(communication circuit) so they can exchange information. c. a network that spans a geographical area that usually encompasses a city or county area (3 to 30 miles) and
that typically uses common carrier circuits. d. a network spanning a large geographical area (up to 1000s of miles). e. a network spanning exactly 543.56 miles with private media.
Q3. Which of the following is a term used to group together the physical and data link layers? a. Internetwork layers b. Hardware layers c. Software layers d. Middleware layers e. Application layers
Q4. In 1996, the U.S. Congress replaced all current laws, FCC regulations, and the consent decree for
AT&T. It: a. set up the Telecommunications Competition and Deregulation Act b. permitted MCI to provide limited long distance service in the U.S. c. permitted telephone and/or computer equipment that was not manufactured by Bell Telephone to be connected
to AT&T's network d. divided AT&T into two parts: one part for long distance service, and a second part, comprised of seven
operating companies, for local telephone service e. set up deregulation for international telecommunications markets in 68 countries
Q5. An intranet is a LAN that uses Internet technologies and is publicly available to people outside of the
organization. a. true b. false
Q6. The _________ layer is responsible for routing of messages from the sender to the final destination. a. data communication layer b. resident layer c. application layer d. network layer e. physical layer
Q7. The integration of voice, video, and data communications is also known as __________. a. convergence b. peer­to­peer networks c. metropolitan wide networks d. regional bell operating company e. intranet
Q8. In the Internet model, the application layer corresponds to the ________, layer(s) s of the OSI model. a. data link and network b. session, presentation and application c. application layer d. application and presentation e. network, transport and presentation
Q9. One disadvantage of the ____________ architecture is that it places a greater load on the network. a. two­tier
https://www.umtweb.edu/SRM/CE.aspx?d=E66BB1C5011862B86E7A7F344B91461C341240076DDB3A29FA21D87C4F993B41F6EFA47F1920FC707216BB9765... 1/6 1/24/2017 CST 161 Midterm Exam b. three tier c. one­tier d. n­tier e. layered
Q10. A network computer is designed primarily to communicate using Internet based standards, but has
no hard disk. It has only limited functionality. a. true b. false
Q11. As the demand for more and more network applications grow; host­based computing becomes the
best solution. a. true b. false
Q12. The World Wide Web was conceived at University of Utah as part of the development of the Internet. a. true b. false
Q13. Using the POP standard for client to server e­mail communication, the e­mail messages remain on the
server computer. a. true b. false
Q14. All three parts (request line, request header, request body) of an HTTP request from a web browser
to a web server are required when a request is made. a. true b. false
Q15. The most commonly used e­mail standard is: a. Simple Mail Transfer Protocol b. X.400 c. CMC d. Post Office Protocol e. Telnet
Q16. ____________ refers to changing the shape of the sound wave in different ways to represent a 1 or a
0. a. digitizing. b. sampling c. modulation d. demodulation e. shaping
Q17. With respect to converting digital data into analog signals, AM stands for: a. Asynchronous Manchester b. Analog Multimode c. Amplitude Modulation d. Anomaly Multiplexing e. Analytical Mosaic
Q18. The ability to transmit in both directions, but only in one direction at a time is an example of
_______________ transmission. a. simplex b. full­duplex c. half­duplex d. analog e. digital
Q19. With which type of digital signaling does the signal always return to zero volts after each bit?
https://www.umtweb.edu/SRM/CE.aspx?d=E66BB1C5011862B86E7A7F344B91461C341240076DDB3A29FA21D87C4F993B41F6EFA47F1920FC707216BB9765... 2/6 1/24/2017 CST 161 Midterm Exam a. Non­return­to­zero signaling b. Unipolar signaling c. Return­to­zero signaling d. Data rate signaling e. Huffman encoding signal
Q20. In full­duplex transmission, two stations can send and receive simultaneously. a. true b. false
Q21. In simplex transmission, the data flows in both directions at the same time. a. true b. false
Q22. With modem communications, the receiving modem converts the incoming digital signal from the
telephone line into an analog signal that can be understood by the computer. a. true b. false
Q23. Cross­talk: a. occurs when one circuit picks up signals in another b. is always bothersome because it has a high signal strength c. decreases with increased proximity of two wires d. decreases during wet or damp weather e. increases with lower frequency signals
Q24. For effective error detection and correction, extra error detection "data" must be included with each
message. a. true b. false
Q25. Cyclical redundancy check is one of the most popular polynomial error­checking schemes. a. true b. false
Q26. Only the sender of a data transmission needs to be concerned about the rules or protocols that
govern how it communicates with the receiver. a. true b. false
Q27. Eliminating jitter to generate a pure carrier signal in an analog circuit is impossible. a. true b. false
Q28. The probability of detecting an error, given that one has occurred, using parity checking is about: a. 100% b. 0% c. 50% d. 75% e. 98%
Q29. _____________ is an effective way to prevent impulse noise, cross talk, and intermodulation noise. a. Shielding wires b. Adding fluorescent lights c. Adding repeaters to a circuit d. Adding amplifiers to a circuit e. Shorting a circuit
Q30. A routing protocol used inside an autonomous system is called an exterior routing protocol. a. true
https://www.umtweb.edu/SRM/CE.aspx?d=E66BB1C5011862B86E7A7F344B91461C341240076DDB3A29FA21D87C4F993B41F6EFA47F1920FC707216BB9765... 3/6 1/24/2017 CST 161 Midterm Exam b. false
Q31. When TCP/IP translates a network layer address into a data link layer address, it sends a special
____________ to all computers in the subnet. a. physical layer packet b. multicast message c. X.25 message d. broadcast message e. application layer packet
Q32. TCP includes a sequence number so that the packets can be reassembled at the destination in the
correct order. a. true b. false
Q33. Software with multiprotocol stacks refers to the fact that the software supports several different
transport/network protocols. a. true b. false
Q34. Server name resolution is done using the: a. Address Resolution Protocol b. Border Gateway Protocol c. Internet Control Message Protocol d. Routing Information Protocol e. Domain Name Service
Q35. A subnet mask of ___________ means that all computers with only the same first two bytes in their
IPv4 addresses are on the same subnet.. a. 11111111.0.0.0 b. 255.255.255.0 c. 255.0.0.0 d. 255.255.0.0 e. 255.255.255.255
Q36. A special type of message that is used when sending the same message to all computers on a specific
LAN or subnet is called a: a. unicast message b. multicast message c. broadcast message d. guided message e. radiated message
Q37. Ethernet LAN was developed by: a. IBM b. ARPANET c. DEC, Xerox, and Intel d. University of Minnesota e. CERN laboratory in Geneva
Q38. _____________ is the software that controls the network. a. Network Operating System b. Client Operating System c. Embedded Operating System d. Network Control System e. Network Software System
Q39. Many network hubs incorporate repeaters or amplifiers to regenerate signals so that attenuation of
the signal does not occur. a. true
https://www.umtweb.edu/SRM/CE.aspx?d=E66BB1C5011862B86E7A7F344B91461C341240076DDB3A29FA21D87C4F993B41F6EFA47F1920FC707216BB9765... 4/6 1/24/2017 CST 161 Midterm Exam b. false
Q40. As discussed in this textbook, three layers of a network model are the components required for a
typical network, including local area networks. a. true b. false
Q41. Cut through switching has fewer errors than store and forward switching. a. true b. false
Q42. A(n) ____________ allows many users to share the same set of files on a common, shared disk drive. a. print server b. database server c. file server d. piconet server e. remote access server
Q43. _____________ refers to having users access the same data files, exchange information via
electronic mail, or search the Internet for information. a. Resource sharing b. User grouping c. User profiling d. Information sharing e. Data pirating
Q44. Which is True about bandwidth? a. Bandwidth and transmission speed are not related. b. The larger the range of frequencies, the smaller the amount of bandwidth available. c. The greater the bandwidth, the faster we can transmit data. d. Bandwidth is usually measured in bytes/second e. The sum of the lowest and highest frequencies is the bandwidth.
Q45. War driving refers to a computer cracking technique that involves driving through a neighborhood
with a wireless­enabled notebook computer and mapping houses and businesses that have wireless access
points. a. true b. false
Q46. A Bluetooth network is called ____________. a. WLAN b. Piconet c. LAN d. area e. WAN
Q47. Another name for distributed coordination function (DCF) is __________. a. distributed carrier sense method b. physical carrier sense method c. physical carrier sense mode d. distributed carrier sense mode e. distributed coordination mode
Q48. The effective data range is up to 6 miles with a line of sight to the access point or 2.5 miles without
line of sight. This describes ____________. a. IEEE 802.3 b. IEEE 802.11a c. IEEE 802.15 d. IEEE 802.16d e. IEEE 802.16e
https://www.umtweb.edu/SRM/CE.aspx?d=E66BB1C5011862B86E7A7F344B91461C341240076DDB3A29FA21D87C4F993B41F6EFA47F1920FC707216BB9765... 5/6 1/24/2017 CST 161 Midterm Exam Q49. It takes 802.11a more access points to provide the same coverage as one 802.11b access point. a. true b. false
Q50. A major difference between Wi­Fi Protected Access (WPA) and WEP or EAP is: a. WPA keys are longer than WEP keys. b. WPA keys are encrypted c. WPA keys cannot be broken by a brute force attack d. WPA keys easier to manage e. WEP keys are changed for every packet that is transmitted to the client https://www.umtweb.edu/SRM/CE.aspx?d=E66BB1C5011862B86E7A7F344B91461C341240076DDB3A29FA21D87C4F993B41F6EFA47F1920FC707216BB9765... 6/6

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• 1493951321-CST 161 test.pdf