The document contains 25 questions about networking and telecommunications topics. The questions cover layers of the OSI model, encoding methods, technologies like ATM and SONET, protocols like IP and TCP, and other concepts such as VPNs and IPv6 addressing. The questions are multiple choice with one correct answer per question.

1. 1. exam2001
(Points: 2)
1. A(n) ____________ provides for a connection between two layers, for example,
Layer 2 to Layer 3.
a. protocol converter
b. handshaking
c. interface
d. network architecture
e. processor
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2. exam2002
(Points: 2)

2. The ___________ layer handles the routing and forwarding of the data.
a. physical
b. data link
c. network
d. transport
e. session
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3. exam2003
(Points: 2)
The __________ data coding method is implemented in Ethernet and Token Ring LANs.
a. Manchester encoding
b. protocol converter
c. character code
d. protocol interface
e. none of the above

3. Save Answer
4. exam2004
(Points: 2)
In 4B/5B encoding:
a. every four-bit pattern is assigned a five-bit code.
b. every eight-bit sequence is transmitted as ten bits.
c. an encoded stream of bits will never contain more than three 0s in a row.
d. synchronization leads to higher transfer rates.
e. all of the above.
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5. exam2005
(Points: 2)

4. A drawback of Bipolar AMI is that:
a. its bandwidth requirement is twice the baud rate.
b. for 100 Mbps transmission, one needs a bandwidth of 200 MHz.
c. both a and b.
d. with a long string of zeros, it can lose self-synchronization.
e. non-coded violations result in spoiled bits.
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6. exam2006
(Points: 2)

5. The most significant benefit that Passive Optical Network offers to end
users is .
a. vast increase in the amount of bandwidth
b. guaranteed service
c. synchronous access
d. choice in service
e. none of the above
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7. exam2007
(Points: 2)

6. Internet Service Providers (ISPs) use _____________ because it aggregates both digital
ISDN BRI and analog modem dial-up connections with one link and phone number.
a. Frame Relay
b. SONET
c. ATM
d. ISDN PRI
e. DSL
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8. exam2008
(Points: 2)

7. _____________ is exceptionally fitted to videoconferencing because channel bonding
enables dynamic bandwidth allocation to support high transmission rates that video
requires.
a. Frame Relay
b. SONET
c. ATM
d. ISDN
e. DSL
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9. exam2009
(Points: 2)

8. The most important consideration when transporting voice and video over a data
network is .
a. network efficiency
b. security
c. bandwidth
d. quality of service
e. all of the above
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10. exam2010
(Points: 2)

9. In ATM, the segmentation-and-reassembly process is basically a ________
conversion.
a. header-to-payload
b. bit-to-byte
c. transmission
d. packet-to-cell
e. network switching
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11. exam2011
(Points: 2)

10. The program was initiated by the FCC to enable users to change
service providers while retaining the same phone number.
a. Local Number Portability
b. Local Service Management System
c. Location Routing Number
d. Number Portability Administration Center
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12. exam2012
(Points: 2)

11. The objective of a(n) SLA is to define and monitor a provider's service
levels while the objective of a(n) SLA is to set and manage
user or
customer expectations.
a. network, application
b. utilization, application
c. internal, external
d. external, internal
e. contract, service
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13. exam2013
(Points: 2)

12. The Securities Exchange Commission regulates that must be treated like
any other forms of written communication and meet compliance guidelines.
a. voice mail
b. e-mail
c. Web-based services
d. telemessaging
e. none of the above
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14. exam2014
(Points: 2)

13. ensures authors the right to protect their work.
a. Copyright
b. Trademark
c. Patent
d. Intellectual property
e. all of the above
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15. exam2015
(Points: 2)

14. When calculating “Cost of Outage,” (Hr + Pr) is __________ during Outage.
a. Human and Personnel Costs
b. Hardware and Personnel Costs
c. Dollars Lost
d. Probability of Human Cost
e. Return on Human and Personnel Costs
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16. exam2016
(Points: 2)

15. When a server is dedicated to a single application, it is referred to as a .
a. specific server
b. dedicated server
c. peer-to-peer server
d. specialized server
e. any of the above
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17. exam2017
(Points: 2)

16. Access control, which is essentially a form of __________, is usually implemented in a
single computer to control access to that computer.
a. authorization
b. encryption
c. active monitoring
d. intrusion detection
e. passive monitoring
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18. exam2018
(Points: 2)

17. ______________ uses mirroring, a fault tolerant technique that keeps a copy of the
contents written to one drive on the other drive.
a. RAID 0
b. RAID 1
c. RAID 2
d. RAID 3
e. RAID 4
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19. exam2019
(Points: 2)

18. Network utilization is defined as the ratio of _______ to _______ .
a. total load, network capacity
b. bit load, bit capacity
c. transmitted frames, lost frames
d. lost frames, transmitted frames
e. network capacity, network load
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20. exam2020
(Points: 2)

19. In an ergonomically designed workstation, the operator’s feet, when seated,
should rest on the floor or on a footrest.
a. at an angle of 10 to 20 degrees
b. lightly
c. never
d. flat
e. none of the above
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21. exam2021
(Points: 2)

20. IPv6 is a _________ -bit address developed to extend source and destination
addresses.
a. 32
b. 64
c. 128
d. 256
e. 512
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22. exam2022
(Points: 2)

21. VPNs are encrypted tunnels through a ____________ network that forwards data
over the shared media.
a. public
b. leased-line
c. proprietary
d. any of the above
e. none of the above
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23. exam2023
(Points: 2)

22. The IP is a(n) ____________ protocol.
a. connectionless
b. unreliable
c. best-effort
d. all of the above
e. none of the above
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24. exam2024
(Points: 2)

23. Applications such as FTP and SMTP use _________ and applications such as RTP
use .
a. UDP, TCP
b. UDP, IP
c. IP, TCP
d. TCP/UDP, TCP/UDP
e. TCP, UDP
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25. exam2025
(Points: 2)

24. The purpose of new suffixes like .info and .aero is _____________.
a. to make Internet addressing complicated for eavesdroppers
b. to make Internet addressing more simple and websites easier to find
c. to ensure that speculators are unable to grab the best names
d. to ensure that trademark holders have competition
e. all of the above
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