Computer Networking
What are reasons for creating OSPF in a hierarchical design?1. To decrease routing overhead2. To speed up convergence3. To confine network instability to single areas of the network4. To make configuring OSPF easier

2, 3 nd 4
3 and 4
1, 2 and 3
3 only

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Computer Networking
You need to create an access list that will prevent hosts in the network range of 192.168.160.0 to 192.168.191.0. Which of the following lists will you use?

access-list 10 deny 192.168.160.0 0.0.191.255
access-list 10 deny 192.168.160.0 0.0.31.255
access-list 10 deny 192.168.160.0 255.255.224.0
access-list 10 deny 192.168.0.0 0.0.31.255

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Computer Networking
Which of the following technique is used for fragment?

one of the pieces that results when an IP gateway divides an IP datagram into smaller pieces for transmission across a network that cannot handle the original datagram size
None of these
All of these
a technique used in best-effort delivery systems to avoid endlessly looping packets
a technique used by protocols in which a lower level protocol accepts a message from a higher level protocol and places it in the data portion of the low level frame

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