Computer Networking
How many digits of the Network User Address are known as the DNIC (Data Network Identification Code)?

first seven
None of these
first three
first four
first five

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Computer Networking
What is the purpose of Spanning Tree Protocol in a switched LAN?

To create collision domains
To prevent switching loops in networks with redundant switched paths
To manage the VLAN database across multiple switches
To provide a mechanism for network monitoring in switched environments
To prevent routing loops in networks with redundant paths

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Computer Networking
You have created a named access list called Blocksales. Which of the following is a valid command for applying this to packets trying to enter interface s0 of your router?

(config-if)# blocksales ip access-list in
(config-if)# ip access-group Blocksales in
(config-if)# ip access-group 110 in
(config)# ip access-group 110 in

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Computer Networking
RS-232-G

None of these
specifies only the mechanical characteristics of an interface by providing a 25-pin connector
is an interface standard between Data terminal Equipment and Data Circuit Terminating Equipment
requires only 7 pin out of 25 in order to transmit digital data over public telephone lines
is an interface between two data circuit terminating equipment as examplified by a local and remote modem

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