1.Which of the following is NOT one of the basic technologies or techniques norm
ID: 3557196 • Letter: 1
Question
1.Which of the following is NOT one of the basic technologies or techniques normally used to construct a WAN?
a. Ordinary telephone lines and telephone modems
b. A mesh of leased lines
c. Use of a PSDN
d. A VPN
e. A mesh of routers and codecs*
2.If you had 3 Megabytes of data that you wanted to send to a far distant location once a day, the most economical way to link the two sites in a WAN would be to use:
a. frame relay.
b. a VPN.
c. ordinary telephone lines and telephone modems.*
d. a low-speed leased line.
3.Asymmetric modem standards should be used when:
a. the modem is capable of performing compression.
b. the modem is capable of performing error detection and correction.
c. the downstream transmission speed should be higher than the upstream speed.*
d. All of the above.
4.A communication line that requires you to order it in advance of using it, brings one pair of UTP to the customer premises, and is available for use at any time is a:
a. digital subscriber line.*
b. T1 Leased line.
c. virtual private network.
d. cable modem line.
5.Which is an important difference between a trunk-based leased line and a DSL?
a. A trunk line-based leased line requires two-pair copper media; DSL requires fiber optic media.
b. A trunk line-based leased line requires two-pair copper or fiber optic media; DSL can operate on single pair of UTP.*
c. A trunk based leased line requires fiber optic media; DSL can operate on either single-pair copper, two-pair copper or fiber optic media.
d. A trunk line-based leased line can operate on copper or fiber media; DSL requires two-pair copper media.
6.Which of the following can use voice-grade copper?
a. Trunk line-based leased line
b. DSL*
c. Both of the above.
d. Neither a. nor b.
7.A T1 line uses _____ UTP.
a. voice-grade
b. data-grade
c. Either a. or b.
d. None of the above. T1 lines use optical fiber.
e. None of the above. T1 lines use satellite connections.
8.A major disadvantage associated with cable modem service is that:
a. cable modem service is more error prone than DSL.
b. cable modem speed cannot approach DSL speed.
c. subscribers too far from the nearest switch cannot get cable modem service.
d. cable modem speed is shared.*
e. All of the above.
9.A GEO user
Explanation / Answer
A mesh of routers and codecs*
ordinary telephone lines and telephone modems.*
the downstream transmission speed should be higher than the upstream speed.*
digital subscriber line.*
A trunk line-based leased line requires two-pair copper or fiber optic media; DSL can operate on single pair of UTP.*
DSL*
None of the above. T1 lines use satellite connections.
cable modem speed is shared.*
dish*
GEO*
6*
4*
a reduction of staff needed to manage network.*
Frame Relay*
ATM*
ISDN*
ATM*
128 kbps*
e. Physical, data link, internet
Both of the above
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.