The fundamental requirements of private-to-public network interconnection method

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Question
The fundamental requirements of private-to-public network interconnection methods which need to be provided in gateways is/are
Options
A. universal accessibility for private network Data Terminal Equipment (DTE)
B. adequate cost control mechanisms for administration of the private networks
C. to assign address to private network DTEs
D. a and b both
E. None of the above

Correct Answer

a and b both

1. You are trying to decide which type of network you will use at your office, and you want the type that will provide communication and avoid collisions on the cable. Which of the following is the best choice?
Options
A. Token-Ring
B. CSMA/CD
C. Ethernet
D. CSMA/CA
E. ARCnet

3. Ethernet and Token-Ring are the two most commonly used network architectures in the world. Jim has heard of the different topologies for networks and wants to choose the architecture that will provide him with the most options. Which of the following would that be? Choose the most correct answer.
Options
A. Token-Ring because it currently can run at both 4Mbps and 16Mbps. This means that it can be used in any topology
B. Ethernet, because it is cabled using fiber-optic cable
C. Token-Ring, because it uses a MAU
D. Ethernet, because it can be set up with most topologies and can use multiple transfer speeds
E. Neither Token-Ring nor Ethernet is the proper choice. Only ARCnet can be used in all topologies

6. MAC is
Options
A. a method of determining which device has access to the transmission medium at any time
B. a method access control technique or multiple-access transmission media
C. a very common bit-oriented data link protocol issued to ISO.
D. network access standard for connecting stations to a circuit-switched network
E. None of the above

9. The difference between a multiplexer and a statistical multiplexer is
Options
A. Statistical multiplexers need buffers while multiplexers do not need buffers
B. Multiplexer use X.25 protocol, while statistical multiplexers use the Aloha protocol
C. Multiplexers often waste the output link capacity while statistical multiplexers optimize its use
D. Multiplexers use Time Division Multiplexing (TDM) while statistical multiplexers use Frequency Division Multiplexing (FDM)
E. None of the above

10. Error control is needed at the transport layer because of potential errors occurring _____.
Options
A. from transmission line noise
B. in routers
C. from out-of-sequence delivery
D. from packet losses.

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