TESTBANK
Business Data Communications and Networking,
14th Edition
,https://www.stuvia.c0m/
Chapter 1
Introduction to Data communications
True-False Questi0ns
The f0ll0wing are p0ssible True/False questi0ns f0r tests. The statement is given and the
answer is pr0vided in square brackets. The level 0f difficulty (easy, m0derate, difficult)
and the page number(s) relevant t0 the t0pic are als0 furnished.
1. Acc0rding t0 J0hn Chambers, CEO 0f Cisc0 (a leading netw0rking techn0l0gy
c0mpany), the inf0rmati0n age is the sec0nd Industrial Rev0luti0n.
Answer:True Difficulty: Easy Reference: p. 4
2. Due t0 recent advances in high speed c0mmunicati0n netw0rks, the inf0rmati0n
lag, 0r the time it takes f0r inf0rmati0n t0 be disseminated ar0und the w0rld, has
been significantly sh0rtened.
Answer:True Difficulty: Easy Reference: p.4
3. 0ne perspective 0f data c0mmunicati0ns and netw0rking as stated in the textb00k,
examines the management 0f netw0rking techn0l0gies, including security, netw0rk
design, and managing the netw0rk 0n a day-t0-day basis and l0ng term basis.
Answer:True Difficulty: M0derate Reference: p. 5
4. The first electr0nic data c0mmunicati0n system was the teleph0ne devel0ped by
Alexander Graham Bell.
Answer:False Difficulty: Easy Reference: p. 5
5. The first transc0ntinental teleph0ne service was established in the 1940s.
Answer:False Difficulty: Easy Reference: p. 6
6. An Inter-Exchange Carrier (IXC) pr0vides 0nly l0cal teleph0ne services t0
h0mes and businesses.
Answer: False Difficulty: Easy Reference: p. 6
7. C0mm0n carriers include the RB0Cs, IXCs, and Cable TV c0mpanies.
Answer:True Difficulty: M0derate Reference: p. 7
8. The Telec0mmunicati0ns Act 0f 1996 n0w permits the RB0Cs t0 pr0vide l0ng
distance 0utside the regi0n in which they pr0vide l0cal teleph0ne services.
Answer: True Difficulty: M0derate Reference: p. 7
9. The Internet was started by the U.S. Department 0f defense in 1969 as a
netw0rk 0f f0ur c0mputers called ARPANET.
Answer: True Difficulty: M0derate Reference: p. 9
10. Telec0mmunicati0ns is the transmissi0n 0f v0ice and vide0 as well as data and
implies transmitting a l0nger distance than in a data c0mmunicati0n netw0rk.
Answer:False Difficulty: M0derate Reference: p. 11
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11. A l0cal area netw0rk (LAN) c0nnects 0ther LANs and BNs l0cated in different areas
t0 each 0ther and t0 wide area netw0rks in a span fr0m 3 t0 30 miles.
Answer: False Difficulty: M0derate Reference: p. 13
12. An intranet is a LAN that uses Internet techn0l0gies and is publicly available t0
pe0ple 0utside 0f the 0rganizati0n.
Answer: False Difficulty: M0derate Reference: p. 15
13. A car manufacturer may give access t0 certain p0rti0ns 0f its netw0rk t0 s0me 0f its
suppliers via Internet. This is an example 0f an Extranet.
Answer: True Difficulty: M0derate Reference: p. 15
14. The 0SI m0del is the m0st widely used netw0rk m0del t0 devel0p and build netw0rks t0day.
Answer: True Difficulty: M0derate Reference: p. 16
15. The netw0rk layer is resp0nsible f0r r0uting messages fr0m the s0urce
c0mputer t0 the destinati0n c0mputer.
Answer: True Difficulty: Easy Reference: p. 17
16. In the OSI m0del, the applicati0n layer is the end user‟s access t0 the netw0rk.
Answer: True Difficulty: M0derate Reference: p. 18
17. The applicati0n layer is the seventh layer 0f the Internet m0del and pr0vides the
end user‟s access t0 the netw0rk.
Answer: True Difficulty: M0derate Reference: p. 18
18. At the transp0rt layer in the Internet m0del, TCP is resp0nsible f0r breaking large
files received fr0m the applicati0n layer int0 smaller packets and 0pening a
c0nnecti0n t0 a server f0r transferring the packets.
Answer: True Difficulty: Difficult Reference: p. 17
19. Ethernet is an example 0f a netw0rk layer pr0t0c0l.
Answer: False Difficulty: Easy Reference: p. 17
20. Data c0mmunicati0n standards enable each layer in the sending c0mputer t0
c0mmunicate with its c0rresp0nding layer in the receiving c0mputer.
Answer: True Difficulty: Easy Reference: p. 22
21. The specificati0n stage 0f the f0rmal standardizati0n pr0cess c0nsists 0f
devel0ping n0menclature and identifying the pr0blems t0 be addressed.
Answer: True Difficulty: M0derate Reference: p. 23
22. ANSI is a v0ting participant in the IS0.
Answer: True Difficulty: Easy Reference: p. 23
23. Passive 0ptical netw0rking, a key trend f0r the future, means that virtually any
c0mputer will be able t0 c0mmunicate with any 0ther c0mputer in the w0rld.
Answer: False Difficulty: M0derate Reference: p. 26
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24. The high bandwidth requirements (high c0mmunicati0ns needs) f0r vide0 have
sl0wed its integrati0n int0 c0mputer netw0rks.
Answer: True Difficulty: M0derate Reference: p. 28
25. An Applicati0n Service Pr0vider (ASP) devel0ps a specific system and c0mpanies
purchase 0r rent the service with0ut installing the system 0n their 0wn c0mputers.
Answer: True Difficulty: M0derate Reference: p. 29
MULTIPLE CHOICE
The f0ll0wing are p0ssible multiple-ch0ice questi0ns f0r tests. The questi0n is p0sed and
the answer is pr0vided under the ch0ices. The level 0f difficulty (easy, m0derate,
difficult) and the page number(s) relevant t0 the t0pic is als0 furnished.
1. Data c0mmunicati0ns and netw0rking can be c0nsidered as a gl0bal area 0f study
because:
a. new techn0l0gies and applicati0ns emerge fr0m a variety 0f c0untries and
spread ar0und the w0rld
b. the techn0l0gies enable gl0bal c0mmunicati0n
c. the p0litical and regulat0ry issues are exactly the same in every c0untry
d. a and b
e. n0ne 0f the ab0ve
Answer: D Difficulty: Easy Reference: p. 4
2. In 1970, a key decisi0n regarding MCI:
a. set up the Telec0mmunicati0ns C0mpetiti0n and Deregulati0n Act
b. permitted MCI t0 pr0vide limited l0ng distance service in the U.S.
c. permitted teleph0ne and/0r c0mputer equipment that was n0t manufactured
by Bell Teleph0ne t0 be c0nnected t0 AT&T‟s netw0rk
d. divided AT&T int0 tw0 parts: 0ne part f0r l0ng distance service, and a sec0nd
part, c0mprised 0f seven 0perating c0mpanies, f0r l0cal teleph0ne service
e. set up deregulati0n f0r internati0nal telec0mmunicati0ns markets in 68 c0untries
Answer: B Difficulty: Easy Reference: p. 6
3. In 1984, a federal judge br0ke up a highly c0ntested teleph0ne service m0n0p0ly and:
a. set up the Telec0mmunicati0ns C0mpetiti0n and Deregulati0n Act
b. permitted MCI t0 pr0vide limited l0ng distance service in the U.S.
c. permitted teleph0ne and/0r c0mputer equipment that was n0t
manufactured by Bell Teleph0ne t0 be c0nnected t0 AT&T‟s netw0rk
d. divided AT&T int0 tw0 parts: 0ne part f0r l0ng distance service, and a
sec0nd part, c0mprised 0f seven regi0nal 0perating c0mpanies, f0r l0cal
teleph0ne service
e. set up deregulati0n f0r internati0nal telec0mmunicati0ns markets in 68 c0untries
Answer: D Difficulty: Easy Reference: p. 6
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4. In 1996, the U.S. C0ngress replaced all current laws, FCC regulati0ns, and the
c0nsent decree f0r AT&T. It:
a. set up the Telec0mmunicati0ns C0mpetiti0n and Deregulati0n Act
b. permitted MCI t0 pr0vide limited l0ng distance service in the U.S.
c. permitted teleph0ne and/0r c0mputer equipment that was n0t manufactured
by Bell Teleph0ne t0 be c0nnected t0 AT&T‟s netw0rk
d. divided AT&T int0 tw0 parts: 0ne part f0r l0ng distance service, and a
sec0nd part, c0mprised 0f seven 0perating c0mpanies, f0r l0cal teleph0ne
service
e. set up deregulati0n f0r internati0nal telec0mmunicati0ns markets in 68 c0untries
Answer: A Difficulty: Easy Reference: p. 7
5. Which 0f the f0ll0wing statements ab0ut the U.S. teleph0ne marketplace is n0t true,
as 0f the Telec0mmunicati0ns Act 0f 1996?
a. Quickly, the l0cal teleph0ne industry in the U.S. went fr0m a highly
regulated m0n0p0ly t0 0pen c0mpetiti0n.
b. RB0Cs may n0t pr0vide l0ng distance service 0utside the regi0n in which
they pr0vide l0cal teleph0ne services.
c. The c0mm0n carriers may pr0vide l0cal services t0 cust0mers.
d. RB0Cs can pr0vide l0ng distance services inside their regi0n if at
least 0ne viable c0mpetit0r f0r l0cal teleph0ne services exists.
e. The Telec0mmunicati0ns Act replaced the 1984 c0nsent decree under
which AT&T was br0ken up.
Answer: B Difficulty: Difficult Reference: p. 7
6. M0dern (1990s and bey0nd) data c0mmunicati0n netw0rks are characterized by:
a. decks 0f punch cards
b. 0nline terminals f0r batch pr0cessing
c. is0lated (stand-al0ne) micr0c0mputers
d. batch I/0 devices
e. distributed systems that rely heavily 0n netw0rking
Answer: E Difficulty: Easy Reference: p. 8
7. In 1983, the Internet was split int0 tw0 parts, 0ne dedicated s0lely t0 the military
and 0ne dedicated t0 university research centers. The tw0 parts were called:
a. Intranet and Extranet
b. BITNET and NSFNET
c. Milnet and Internet
d. ARPANET and Milnet
e. n0ne 0f the ab0ve
Answer: C Difficulty: M0derate Reference: p. 9
8. Which 0f the f0ll0wing is n0t true ab0ut a server?
a. st0res data and s0ftware that can be accessed by the client.
b. is the pathway thr0ugh which messages travel.
c. in client/server c0mputing they w0rk t0gether 0ver the netw0rk with
client c0mputers t0 supp0rt the business applicati0n.
d. can 0nly perf0rm 0ne functi0n 0n a netw0rk.
e. st0res d0cuments and graphics that can be accessed fr0m any Web br0wser.
Answer: D Difficulty: Difficult Reference: p. 12
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9. Netw0rks that are designed t0 c0nnect similar c0mputers that share data and
s0ftware with each 0ther are called:
a. client/server netw0rks
b. peer-t0-peer netw0rks
c. h0st netw0rks
d. client netw0rks
e. l0cal area netw0rks
Answer: B Difficulty: Easy Reference: p. 12
10. The functi0n 0f the file server is t0 :
a. st0re data and s0ftware pr0grams that can be used by client
c0mputers 0n the netw0rk.
b. manage all printing requests fr0m clients 0n the netw0rk.
c. transfer e-mail messages t0 0ther servers 0n the netw0rk.
d. st0re HTML d0cuments f0r an Internet 0r intranet web site.
e. c00rdinate the c0mmunicati0n 0f client and servers 0n the netw0rk.
Answer: A Difficulty: M0derate Reference: p. 12
11. A l0cal area netw0rk is:
a. a large central netw0rk that c0nnects 0ther netw0rks in a distance spanning
exactly 5 miles.
b. a gr0up 0f micr0c0mputers 0r terminals l0cated in the same general area and
c0nnected by a c0mm0n cable (c0mmunicati0n circuit) s0 they can exchange
inf0rmati0n.
c. a netw0rk spanning a ge0graphical area that usually enc0mpasses a city 0r
c0unty area (3 t0 30 miles).
d. a netw0rk spanning a large ge0graphical area (up t0 1000s 0f miles).
e. a netw0rk spanning exactly 10 miles with c0mm0n carrier circuits.
Answer: B Difficulty: Easy Reference: p. 13
12. A backb0ne netw0rk is:
a. a high speed central netw0rk that c0nnects 0ther netw0rks in a distance
spanning up t0 several miles.
b. a gr0up 0f micr0c0mputers 0r terminals l0cated in the same general area and
c0nnected by a c0mm0n cable (c0mmunicati0n circuit) s0 they can exchange
inf0rmati0n.
c. a netw0rk spanning a ge0graphical area that usually enc0mpasses a city 0r
c0unty area (3 t0 30 miles).
d. a netw0rk spanning a large ge0graphical area (up t0 1000s 0f miles).
e. a netw0rk spanning exactly 200 miles with c0mm0n carrier circuits.
Answer: A Difficulty: M0derate Reference: p. 13
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13. A metr0p0litan area netw0rk is:
a. a high speed central netw0rk, built with privately 0wned media, which
c0nnects 0ther netw0rks in a distance spanning up t0 several miles.
b. a gr0up 0f micr0c0mputers 0r terminals l0cated in the same general area and
c0nnected by a c0mm0n cable (c0mmunicati0n circuit) s0 they can exchange
inf0rmati0n.
c. a netw0rk that spans a ge0graphical area that usually enc0mpasses a city 0r
c0unty area (3 t0 30 miles) and that typically uses c0mm0n carrier circuits.
d. a netw0rk spanning a large ge0graphical area (up t0 1000s 0f miles).
e. a netw0rk spanning exactly 543.56 miles with private media.
Answer: C Difficulty: Easy Reference: p. 13
14. Which 0f the f0ll0wing is n0t a pr0perty 0f a WAN:
a. c0nnects backb0ne netw0rks and MANS.
b. spans hundreds 0r th0usands 0f miles
c. pr0vides data transmissi0n speeds fr0m 56Kbps t0 10Gbps.
d. c0nnects a gr0up 0f c0mputers in a small ge0graphic area such as
r00m, fl00r, building 0r campus.
e. uses lease lines fr0m IXCs like ATT, MCI, Sprint.
Answer: D Difficulty: M0derate Reference: p. 15
15. A(n) is a LAN that uses the same techn0l0gies as the Internet but is 0pen
t0 0nly th0se inside the 0rganizati0n.
a. WAN
b. BN
c. extranet
d. intranet
e. MAN
Answer: D Difficulty: Easy Reference: p. 15
16. A(n) is a LAN that uses the same techn0l0gies as the Internet but is
pr0vided t0 invited users 0utside the 0rganizati0n wh0 access it 0ver the Internet.
a. WAN
b. BN
c. extranet
d. intranet
e. MAN
Answer: C Difficulty: Easy Reference: p. 15
17. Which layer 0f the 0SI m0del is resp0nsible f0r ensuring that all packets sent are
received by the destinati0n stati0n by dealing with end-t0-end issues?
a. presentati0n Layer
b. transp0rt Layer
c. physical Layer
d. sessi0n Layer
e. applicati0n Layer
Answer: B Difficulty: Easy Reference: p. 17
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18. Which layer 0f the 0SI m0del is resp0nsible f0r ensuring fl0w c0ntr0l s0 that the
destinati0n stati0n d0es n0t receive m0re packets that it can pr0cess at any given
time?
a. presentati0n Layer
b. transp0rt Layer
c. physical Layer
d. sessi0n Layer
e. applicati0n Layer
Answer: B Difficulty: Easy Reference: p. 17
19. The layer 0f the 0SI m0del is resp0nsible f0r data f0rmat translati0n.
a. sessi0n
b. presentati0n
c. physical
d. applicati0n
e. transp0rt
Answer: B Difficulty: Easy Reference: p. 17
20. The f0urth layer 0f the 0SI m0del is called the layer.
a. netw0rk
b. transp0rt
c. sessi0n
d. data link
e. presentati0n
Answer: B Difficulty: Easy Reference: p. 17
21. is an 0rderly cl0se t0 a dial0gue between end users.
a. Sessi0n terminati0n
b. Physical bits
c. Frame 0verhead
d. Packet encapsulati0n
e. Message encrypti0n
Answer: A Difficulty: Difficult Reference: p. 17
22. In the Internet m0del, the applicati0n layer c0rresp0nds t0 the , layer(s) s 0f
the 0SI m0del.
a. data link and netw0rk
b. sessi0n, presentati0n and applicati0n
c. applicati0n layer
d. applicati0n and presentati0n
e. netw0rk, transp0rt and presentati0n
Answer: B Difficulty: Difficult Reference: p. 17
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23. The layer perf0rms err0r checking which is redundant with the functi0n 0f the
layer.
a. applicati0n, presentati0n
b. physical, data link
c. transp0rt, data link
d. presentati0n, transp0rt
e. netw0rk, physical
Answer: C Difficulty: M0derate Reference: p. 16-17
24. Which is n0t a functi0n 0f the physical layer:
a. transmissi0n 0f bits.
b. defining the rules by which 0ne and zer0es are transmitted.
c. pr0viding err0r-free transmissi0n 0f data.
d. pr0viding the physical c0nnecti0n between sender and receiver.
e. specifying the type 0f c0nnecti0n and type 0f signals, waves 0r pulses
that pass th0ugh it.
Answer: C Difficulty: Difficult Reference: p. 16
25. The layer is resp0nsible f0r r0uting 0f messages fr0m the sender t0 the
final destinati0n.
a. data c0mmunicati0n layer
b. resident layer
c. applicati0n layer
d. netw0rk layer
e. physical layer
Answer: d Difficulty: Easy Reference: p. 17
26. Which 0f the f0ll0wing is n0t a functi0n 0f the data link layer?
a. deciding when t0 transmit messages 0ver the media
b. f0rmatting the message by indicating where messages start and end, and
which part is the address
c. detecting and c0rrecting any err0rs that have 0ccurred in the transmissi0n
0f the message
d. specifying the type 0f c0nnecti0n, and the electrical signals, radi0 waves,
0r light pulses that pass thr0ugh it
e. c0ntr0lling the physical layer by determining when t0 transmit
Answer: d Difficulty: Easy Reference: p. 16
27. Which 0f the f0ll0wing is a functi0n 0f the transp0rt layer?
a. linking the physical layer t0 the netw0rk layer
b. f0rmatting messages by indicating where they start and end
c. deciding which r0ute the message sh0uld take
d. breaking l0ng messages int0 several smaller messages
e. specifying the type 0f c0nnecti0n and the electrical signals, radi0 waves,
0r light pulses that pass thr0ugh it
Answer: d Difficulty: Easy Reference: p. 17
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28. Which 0f the f0ll0wing is a term used t0 gr0up t0gether the physical and data link layers?
a. Internetw0rk layers
b. Hardware layers
c. S0ftware layers
d. Middleware layers
e. Applicati0n layers
Answer: B Difficulty: M0derate Reference: p. 17
29. Which 0f the f0ll0wing w0uld be a standard used at the Data Link layer 0f the
Internet 0r 0SI m0del?
a. IP
b. TCP
c. Ethernet
d. HTTP
e. FTP
Answer: C Difficulty: M0derate Reference: p. 17
30. In which layer 0f the Internet m0del w0uld the HTTP standard be used?
a. physical
b. applicati0n
c. transp0rt
d. netw0rk
e. data link
Answer: B Difficulty: M0derate Reference: p. 17
31. A(n) is a set 0f rules that determine what a layer w0uld d0 and
pr0vides a clearly defined set 0f messages that s0ftware at the layer needs t0
understand.
a. agreement
b. standard
c. pr0t0c0l
d. regulati0ns
e. p0licy
Answer: C Difficulty: M0derate Reference: p. 19
32. The netw0rk layer 0f the Internet m0del uses the pr0t0c0l t0 r0ute
messages th0ugh the netw0rk.
a. TCP
b. HTTP
c. FTP
d. SMTP
e. IP
Answer: E Difficulty: M0derate Reference: p. 21
Business Data Communications and Networking,
14th Edition
,https://www.stuvia.c0m/
Chapter 1
Introduction to Data communications
True-False Questi0ns
The f0ll0wing are p0ssible True/False questi0ns f0r tests. The statement is given and the
answer is pr0vided in square brackets. The level 0f difficulty (easy, m0derate, difficult)
and the page number(s) relevant t0 the t0pic are als0 furnished.
1. Acc0rding t0 J0hn Chambers, CEO 0f Cisc0 (a leading netw0rking techn0l0gy
c0mpany), the inf0rmati0n age is the sec0nd Industrial Rev0luti0n.
Answer:True Difficulty: Easy Reference: p. 4
2. Due t0 recent advances in high speed c0mmunicati0n netw0rks, the inf0rmati0n
lag, 0r the time it takes f0r inf0rmati0n t0 be disseminated ar0und the w0rld, has
been significantly sh0rtened.
Answer:True Difficulty: Easy Reference: p.4
3. 0ne perspective 0f data c0mmunicati0ns and netw0rking as stated in the textb00k,
examines the management 0f netw0rking techn0l0gies, including security, netw0rk
design, and managing the netw0rk 0n a day-t0-day basis and l0ng term basis.
Answer:True Difficulty: M0derate Reference: p. 5
4. The first electr0nic data c0mmunicati0n system was the teleph0ne devel0ped by
Alexander Graham Bell.
Answer:False Difficulty: Easy Reference: p. 5
5. The first transc0ntinental teleph0ne service was established in the 1940s.
Answer:False Difficulty: Easy Reference: p. 6
6. An Inter-Exchange Carrier (IXC) pr0vides 0nly l0cal teleph0ne services t0
h0mes and businesses.
Answer: False Difficulty: Easy Reference: p. 6
7. C0mm0n carriers include the RB0Cs, IXCs, and Cable TV c0mpanies.
Answer:True Difficulty: M0derate Reference: p. 7
8. The Telec0mmunicati0ns Act 0f 1996 n0w permits the RB0Cs t0 pr0vide l0ng
distance 0utside the regi0n in which they pr0vide l0cal teleph0ne services.
Answer: True Difficulty: M0derate Reference: p. 7
9. The Internet was started by the U.S. Department 0f defense in 1969 as a
netw0rk 0f f0ur c0mputers called ARPANET.
Answer: True Difficulty: M0derate Reference: p. 9
10. Telec0mmunicati0ns is the transmissi0n 0f v0ice and vide0 as well as data and
implies transmitting a l0nger distance than in a data c0mmunicati0n netw0rk.
Answer:False Difficulty: M0derate Reference: p. 11
,https://www.stuvia.c0m/
11. A l0cal area netw0rk (LAN) c0nnects 0ther LANs and BNs l0cated in different areas
t0 each 0ther and t0 wide area netw0rks in a span fr0m 3 t0 30 miles.
Answer: False Difficulty: M0derate Reference: p. 13
12. An intranet is a LAN that uses Internet techn0l0gies and is publicly available t0
pe0ple 0utside 0f the 0rganizati0n.
Answer: False Difficulty: M0derate Reference: p. 15
13. A car manufacturer may give access t0 certain p0rti0ns 0f its netw0rk t0 s0me 0f its
suppliers via Internet. This is an example 0f an Extranet.
Answer: True Difficulty: M0derate Reference: p. 15
14. The 0SI m0del is the m0st widely used netw0rk m0del t0 devel0p and build netw0rks t0day.
Answer: True Difficulty: M0derate Reference: p. 16
15. The netw0rk layer is resp0nsible f0r r0uting messages fr0m the s0urce
c0mputer t0 the destinati0n c0mputer.
Answer: True Difficulty: Easy Reference: p. 17
16. In the OSI m0del, the applicati0n layer is the end user‟s access t0 the netw0rk.
Answer: True Difficulty: M0derate Reference: p. 18
17. The applicati0n layer is the seventh layer 0f the Internet m0del and pr0vides the
end user‟s access t0 the netw0rk.
Answer: True Difficulty: M0derate Reference: p. 18
18. At the transp0rt layer in the Internet m0del, TCP is resp0nsible f0r breaking large
files received fr0m the applicati0n layer int0 smaller packets and 0pening a
c0nnecti0n t0 a server f0r transferring the packets.
Answer: True Difficulty: Difficult Reference: p. 17
19. Ethernet is an example 0f a netw0rk layer pr0t0c0l.
Answer: False Difficulty: Easy Reference: p. 17
20. Data c0mmunicati0n standards enable each layer in the sending c0mputer t0
c0mmunicate with its c0rresp0nding layer in the receiving c0mputer.
Answer: True Difficulty: Easy Reference: p. 22
21. The specificati0n stage 0f the f0rmal standardizati0n pr0cess c0nsists 0f
devel0ping n0menclature and identifying the pr0blems t0 be addressed.
Answer: True Difficulty: M0derate Reference: p. 23
22. ANSI is a v0ting participant in the IS0.
Answer: True Difficulty: Easy Reference: p. 23
23. Passive 0ptical netw0rking, a key trend f0r the future, means that virtually any
c0mputer will be able t0 c0mmunicate with any 0ther c0mputer in the w0rld.
Answer: False Difficulty: M0derate Reference: p. 26
,https://www.stuvia.c0m/
24. The high bandwidth requirements (high c0mmunicati0ns needs) f0r vide0 have
sl0wed its integrati0n int0 c0mputer netw0rks.
Answer: True Difficulty: M0derate Reference: p. 28
25. An Applicati0n Service Pr0vider (ASP) devel0ps a specific system and c0mpanies
purchase 0r rent the service with0ut installing the system 0n their 0wn c0mputers.
Answer: True Difficulty: M0derate Reference: p. 29
MULTIPLE CHOICE
The f0ll0wing are p0ssible multiple-ch0ice questi0ns f0r tests. The questi0n is p0sed and
the answer is pr0vided under the ch0ices. The level 0f difficulty (easy, m0derate,
difficult) and the page number(s) relevant t0 the t0pic is als0 furnished.
1. Data c0mmunicati0ns and netw0rking can be c0nsidered as a gl0bal area 0f study
because:
a. new techn0l0gies and applicati0ns emerge fr0m a variety 0f c0untries and
spread ar0und the w0rld
b. the techn0l0gies enable gl0bal c0mmunicati0n
c. the p0litical and regulat0ry issues are exactly the same in every c0untry
d. a and b
e. n0ne 0f the ab0ve
Answer: D Difficulty: Easy Reference: p. 4
2. In 1970, a key decisi0n regarding MCI:
a. set up the Telec0mmunicati0ns C0mpetiti0n and Deregulati0n Act
b. permitted MCI t0 pr0vide limited l0ng distance service in the U.S.
c. permitted teleph0ne and/0r c0mputer equipment that was n0t manufactured
by Bell Teleph0ne t0 be c0nnected t0 AT&T‟s netw0rk
d. divided AT&T int0 tw0 parts: 0ne part f0r l0ng distance service, and a sec0nd
part, c0mprised 0f seven 0perating c0mpanies, f0r l0cal teleph0ne service
e. set up deregulati0n f0r internati0nal telec0mmunicati0ns markets in 68 c0untries
Answer: B Difficulty: Easy Reference: p. 6
3. In 1984, a federal judge br0ke up a highly c0ntested teleph0ne service m0n0p0ly and:
a. set up the Telec0mmunicati0ns C0mpetiti0n and Deregulati0n Act
b. permitted MCI t0 pr0vide limited l0ng distance service in the U.S.
c. permitted teleph0ne and/0r c0mputer equipment that was n0t
manufactured by Bell Teleph0ne t0 be c0nnected t0 AT&T‟s netw0rk
d. divided AT&T int0 tw0 parts: 0ne part f0r l0ng distance service, and a
sec0nd part, c0mprised 0f seven regi0nal 0perating c0mpanies, f0r l0cal
teleph0ne service
e. set up deregulati0n f0r internati0nal telec0mmunicati0ns markets in 68 c0untries
Answer: D Difficulty: Easy Reference: p. 6
,https://www.stuvia.c0m/
4. In 1996, the U.S. C0ngress replaced all current laws, FCC regulati0ns, and the
c0nsent decree f0r AT&T. It:
a. set up the Telec0mmunicati0ns C0mpetiti0n and Deregulati0n Act
b. permitted MCI t0 pr0vide limited l0ng distance service in the U.S.
c. permitted teleph0ne and/0r c0mputer equipment that was n0t manufactured
by Bell Teleph0ne t0 be c0nnected t0 AT&T‟s netw0rk
d. divided AT&T int0 tw0 parts: 0ne part f0r l0ng distance service, and a
sec0nd part, c0mprised 0f seven 0perating c0mpanies, f0r l0cal teleph0ne
service
e. set up deregulati0n f0r internati0nal telec0mmunicati0ns markets in 68 c0untries
Answer: A Difficulty: Easy Reference: p. 7
5. Which 0f the f0ll0wing statements ab0ut the U.S. teleph0ne marketplace is n0t true,
as 0f the Telec0mmunicati0ns Act 0f 1996?
a. Quickly, the l0cal teleph0ne industry in the U.S. went fr0m a highly
regulated m0n0p0ly t0 0pen c0mpetiti0n.
b. RB0Cs may n0t pr0vide l0ng distance service 0utside the regi0n in which
they pr0vide l0cal teleph0ne services.
c. The c0mm0n carriers may pr0vide l0cal services t0 cust0mers.
d. RB0Cs can pr0vide l0ng distance services inside their regi0n if at
least 0ne viable c0mpetit0r f0r l0cal teleph0ne services exists.
e. The Telec0mmunicati0ns Act replaced the 1984 c0nsent decree under
which AT&T was br0ken up.
Answer: B Difficulty: Difficult Reference: p. 7
6. M0dern (1990s and bey0nd) data c0mmunicati0n netw0rks are characterized by:
a. decks 0f punch cards
b. 0nline terminals f0r batch pr0cessing
c. is0lated (stand-al0ne) micr0c0mputers
d. batch I/0 devices
e. distributed systems that rely heavily 0n netw0rking
Answer: E Difficulty: Easy Reference: p. 8
7. In 1983, the Internet was split int0 tw0 parts, 0ne dedicated s0lely t0 the military
and 0ne dedicated t0 university research centers. The tw0 parts were called:
a. Intranet and Extranet
b. BITNET and NSFNET
c. Milnet and Internet
d. ARPANET and Milnet
e. n0ne 0f the ab0ve
Answer: C Difficulty: M0derate Reference: p. 9
8. Which 0f the f0ll0wing is n0t true ab0ut a server?
a. st0res data and s0ftware that can be accessed by the client.
b. is the pathway thr0ugh which messages travel.
c. in client/server c0mputing they w0rk t0gether 0ver the netw0rk with
client c0mputers t0 supp0rt the business applicati0n.
d. can 0nly perf0rm 0ne functi0n 0n a netw0rk.
e. st0res d0cuments and graphics that can be accessed fr0m any Web br0wser.
Answer: D Difficulty: Difficult Reference: p. 12
,https://www.stuvia.c0m/
9. Netw0rks that are designed t0 c0nnect similar c0mputers that share data and
s0ftware with each 0ther are called:
a. client/server netw0rks
b. peer-t0-peer netw0rks
c. h0st netw0rks
d. client netw0rks
e. l0cal area netw0rks
Answer: B Difficulty: Easy Reference: p. 12
10. The functi0n 0f the file server is t0 :
a. st0re data and s0ftware pr0grams that can be used by client
c0mputers 0n the netw0rk.
b. manage all printing requests fr0m clients 0n the netw0rk.
c. transfer e-mail messages t0 0ther servers 0n the netw0rk.
d. st0re HTML d0cuments f0r an Internet 0r intranet web site.
e. c00rdinate the c0mmunicati0n 0f client and servers 0n the netw0rk.
Answer: A Difficulty: M0derate Reference: p. 12
11. A l0cal area netw0rk is:
a. a large central netw0rk that c0nnects 0ther netw0rks in a distance spanning
exactly 5 miles.
b. a gr0up 0f micr0c0mputers 0r terminals l0cated in the same general area and
c0nnected by a c0mm0n cable (c0mmunicati0n circuit) s0 they can exchange
inf0rmati0n.
c. a netw0rk spanning a ge0graphical area that usually enc0mpasses a city 0r
c0unty area (3 t0 30 miles).
d. a netw0rk spanning a large ge0graphical area (up t0 1000s 0f miles).
e. a netw0rk spanning exactly 10 miles with c0mm0n carrier circuits.
Answer: B Difficulty: Easy Reference: p. 13
12. A backb0ne netw0rk is:
a. a high speed central netw0rk that c0nnects 0ther netw0rks in a distance
spanning up t0 several miles.
b. a gr0up 0f micr0c0mputers 0r terminals l0cated in the same general area and
c0nnected by a c0mm0n cable (c0mmunicati0n circuit) s0 they can exchange
inf0rmati0n.
c. a netw0rk spanning a ge0graphical area that usually enc0mpasses a city 0r
c0unty area (3 t0 30 miles).
d. a netw0rk spanning a large ge0graphical area (up t0 1000s 0f miles).
e. a netw0rk spanning exactly 200 miles with c0mm0n carrier circuits.
Answer: A Difficulty: M0derate Reference: p. 13
,https://www.stuvia.c0m/
13. A metr0p0litan area netw0rk is:
a. a high speed central netw0rk, built with privately 0wned media, which
c0nnects 0ther netw0rks in a distance spanning up t0 several miles.
b. a gr0up 0f micr0c0mputers 0r terminals l0cated in the same general area and
c0nnected by a c0mm0n cable (c0mmunicati0n circuit) s0 they can exchange
inf0rmati0n.
c. a netw0rk that spans a ge0graphical area that usually enc0mpasses a city 0r
c0unty area (3 t0 30 miles) and that typically uses c0mm0n carrier circuits.
d. a netw0rk spanning a large ge0graphical area (up t0 1000s 0f miles).
e. a netw0rk spanning exactly 543.56 miles with private media.
Answer: C Difficulty: Easy Reference: p. 13
14. Which 0f the f0ll0wing is n0t a pr0perty 0f a WAN:
a. c0nnects backb0ne netw0rks and MANS.
b. spans hundreds 0r th0usands 0f miles
c. pr0vides data transmissi0n speeds fr0m 56Kbps t0 10Gbps.
d. c0nnects a gr0up 0f c0mputers in a small ge0graphic area such as
r00m, fl00r, building 0r campus.
e. uses lease lines fr0m IXCs like ATT, MCI, Sprint.
Answer: D Difficulty: M0derate Reference: p. 15
15. A(n) is a LAN that uses the same techn0l0gies as the Internet but is 0pen
t0 0nly th0se inside the 0rganizati0n.
a. WAN
b. BN
c. extranet
d. intranet
e. MAN
Answer: D Difficulty: Easy Reference: p. 15
16. A(n) is a LAN that uses the same techn0l0gies as the Internet but is
pr0vided t0 invited users 0utside the 0rganizati0n wh0 access it 0ver the Internet.
a. WAN
b. BN
c. extranet
d. intranet
e. MAN
Answer: C Difficulty: Easy Reference: p. 15
17. Which layer 0f the 0SI m0del is resp0nsible f0r ensuring that all packets sent are
received by the destinati0n stati0n by dealing with end-t0-end issues?
a. presentati0n Layer
b. transp0rt Layer
c. physical Layer
d. sessi0n Layer
e. applicati0n Layer
Answer: B Difficulty: Easy Reference: p. 17
,https://www.stuvia.c0m/
18. Which layer 0f the 0SI m0del is resp0nsible f0r ensuring fl0w c0ntr0l s0 that the
destinati0n stati0n d0es n0t receive m0re packets that it can pr0cess at any given
time?
a. presentati0n Layer
b. transp0rt Layer
c. physical Layer
d. sessi0n Layer
e. applicati0n Layer
Answer: B Difficulty: Easy Reference: p. 17
19. The layer 0f the 0SI m0del is resp0nsible f0r data f0rmat translati0n.
a. sessi0n
b. presentati0n
c. physical
d. applicati0n
e. transp0rt
Answer: B Difficulty: Easy Reference: p. 17
20. The f0urth layer 0f the 0SI m0del is called the layer.
a. netw0rk
b. transp0rt
c. sessi0n
d. data link
e. presentati0n
Answer: B Difficulty: Easy Reference: p. 17
21. is an 0rderly cl0se t0 a dial0gue between end users.
a. Sessi0n terminati0n
b. Physical bits
c. Frame 0verhead
d. Packet encapsulati0n
e. Message encrypti0n
Answer: A Difficulty: Difficult Reference: p. 17
22. In the Internet m0del, the applicati0n layer c0rresp0nds t0 the , layer(s) s 0f
the 0SI m0del.
a. data link and netw0rk
b. sessi0n, presentati0n and applicati0n
c. applicati0n layer
d. applicati0n and presentati0n
e. netw0rk, transp0rt and presentati0n
Answer: B Difficulty: Difficult Reference: p. 17
,https://www.stuvia.c0m/
23. The layer perf0rms err0r checking which is redundant with the functi0n 0f the
layer.
a. applicati0n, presentati0n
b. physical, data link
c. transp0rt, data link
d. presentati0n, transp0rt
e. netw0rk, physical
Answer: C Difficulty: M0derate Reference: p. 16-17
24. Which is n0t a functi0n 0f the physical layer:
a. transmissi0n 0f bits.
b. defining the rules by which 0ne and zer0es are transmitted.
c. pr0viding err0r-free transmissi0n 0f data.
d. pr0viding the physical c0nnecti0n between sender and receiver.
e. specifying the type 0f c0nnecti0n and type 0f signals, waves 0r pulses
that pass th0ugh it.
Answer: C Difficulty: Difficult Reference: p. 16
25. The layer is resp0nsible f0r r0uting 0f messages fr0m the sender t0 the
final destinati0n.
a. data c0mmunicati0n layer
b. resident layer
c. applicati0n layer
d. netw0rk layer
e. physical layer
Answer: d Difficulty: Easy Reference: p. 17
26. Which 0f the f0ll0wing is n0t a functi0n 0f the data link layer?
a. deciding when t0 transmit messages 0ver the media
b. f0rmatting the message by indicating where messages start and end, and
which part is the address
c. detecting and c0rrecting any err0rs that have 0ccurred in the transmissi0n
0f the message
d. specifying the type 0f c0nnecti0n, and the electrical signals, radi0 waves,
0r light pulses that pass thr0ugh it
e. c0ntr0lling the physical layer by determining when t0 transmit
Answer: d Difficulty: Easy Reference: p. 16
27. Which 0f the f0ll0wing is a functi0n 0f the transp0rt layer?
a. linking the physical layer t0 the netw0rk layer
b. f0rmatting messages by indicating where they start and end
c. deciding which r0ute the message sh0uld take
d. breaking l0ng messages int0 several smaller messages
e. specifying the type 0f c0nnecti0n and the electrical signals, radi0 waves,
0r light pulses that pass thr0ugh it
Answer: d Difficulty: Easy Reference: p. 17
,https://www.stuvia.c0m/
28. Which 0f the f0ll0wing is a term used t0 gr0up t0gether the physical and data link layers?
a. Internetw0rk layers
b. Hardware layers
c. S0ftware layers
d. Middleware layers
e. Applicati0n layers
Answer: B Difficulty: M0derate Reference: p. 17
29. Which 0f the f0ll0wing w0uld be a standard used at the Data Link layer 0f the
Internet 0r 0SI m0del?
a. IP
b. TCP
c. Ethernet
d. HTTP
e. FTP
Answer: C Difficulty: M0derate Reference: p. 17
30. In which layer 0f the Internet m0del w0uld the HTTP standard be used?
a. physical
b. applicati0n
c. transp0rt
d. netw0rk
e. data link
Answer: B Difficulty: M0derate Reference: p. 17
31. A(n) is a set 0f rules that determine what a layer w0uld d0 and
pr0vides a clearly defined set 0f messages that s0ftware at the layer needs t0
understand.
a. agreement
b. standard
c. pr0t0c0l
d. regulati0ns
e. p0licy
Answer: C Difficulty: M0derate Reference: p. 19
32. The netw0rk layer 0f the Internet m0del uses the pr0t0c0l t0 r0ute
messages th0ugh the netw0rk.
a. TCP
b. HTTP
c. FTP
d. SMTP
e. IP
Answer: E Difficulty: M0derate Reference: p. 21
