1-43.
1-44.
1-45.
1-46.
Which layer represents the
services that directly
support users?
1.
Application
2.
Network
3.
Physical
4.
Session
Which of the following cable
types is the least
expensive?
1.
Coaxial
2.
Fiber optic
3.
Solid core
4.
Twisted-pair
For network purposes, 22-
and 24-gauge wire are the
most common types of which
of the following types of
cables?
1.
Coaxial
2.
Fiber optic
3.
Solid core
4.
Twisted-pair
Which of the following types
of cable can handle a data
flow of up to approximately
one Mbps?
1.
Coaxial
2.
Fiber optic
3.
Solid core
4.
Twisted-pair
1-47.
Coaxial cable is used
extensively in LANs whenever
the distance involved is
relatively short, generally
less than how many miles (a)
for baseband and (b) for
broadband?
1.
(a) 1
(b) 5
2.
(a) 2
(b) 5
3.
(a) 2
(b) 10
4.
(a) 5
(b) 10
1-48.
Fiber optic cable has a
transmission rate that
ranges up to approximately
what speed?
1.
1 Gbps
2.
3 Gbps
3.
5 Gbps
4.
7 Gbps
1-49.
Why is fiber optic cable
immune to electrical
interference of any kind?
1.
Has only one strand per
cable
2.
Has thick shielding
3.
Carries no electrical
current
4.
Uses double insulation
on each wire
1-50.
What software package makes
it possible to implement and
control a network and
enables users to use the
resources and services on
the network?
1.
Network application
software
2.
Network operating
software
3.
Network system software
4.
Telecommunications
access software
6
