Exercise: Wide Area Networks

Questions for: Wide Area Networks

Which of the following describes an industry-wide standard suite of protocols and algorithms that allows for secure data transmission over an IP-based network that functions at the layer 3 Network layer of the OSI model?
A:
HDLC
B:
Cable
C:
VPN
D:
IPSec
Answer: D
IPSec is an industry-wide standard suite of protocols and algorithms that allows for secure data transmission over an IP-based network that functions at the layer 3 Network layer of the OSI model.
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Which of the following describes the creation of private networks across the Internet, enabling privacy and tunneling of non-TCP/IP protocols?
A:
HDLC
B:
Cable
C:
VPN
D:
IPSec
Answer: C
A allows the creation of private networks across the Internet, enabling privacy and tunneling of non-TCP/IP protocols. A VPN can be set up across any type of link.
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A default Frame Relay WAN is classified as what type of physical network?
A:
Point-to-point
B:
Broadcast multi-access
C:
Non-broadcast multi-access
D:
Non-broadcast multipoint
Answer: C
Frame Relay, by default, is a non-broadcast multi-access (NBMA) network, which means that broadcasts, such as RIP updates, will not be forwarded across the link by default.
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In which of the following technologies is the term HFC used?
A:
DSL
B:
PPPoE
C:
Frame Relay
D:
Dedicated T1
Answer: D
In a modern network, hybrid fibre-coaxial (HFC) is a telecommunications industry term for a network that incorporates both optical fiber and coaxial cable to create a broadband network.
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Which of the following command options are displayed when you use the Router# show frame-relay ? command?
  1. dlci
  2. neighbors
  3. lmi
  4. pvc
  5. map
A:
1 only
B:
2 and 4
C:
3, 4 and 5
D:
All of the above
Answer: C
The show frame-relay ? command provides many options, but the options available in this question are lmi, pvc, and map.
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