A workstation loses connection whenever the network cable is slightly moved. What

layer is most likely involved?

A router interface is assigned 192.168.200.129/25

, but hosts in the same subnet get

“host unreachable.” Which explanation is correct?

A loop occurs between two switches due to an accidental connection. The MAC table

grows and collapses repeatedly. Effect on network?

A switch suddenly begins flooding almost all frames. The MAC table shows many

dynamic entries aging out rapidly. Why?

Ping to Host A works only when ARP cache is empty. Once cached, packets fail. Most

likely cause?

A NIC shows high collision counts but the switch interface does not. What does this

imply?

Subnetting 10.0.4.0/24 into /28

networks, what is the broadcast address of the 10th

subnet?

A network is divided into /27 subnets. A student assigns: 

IP: 192.168.10.33 

Mask: /27 

What is true?

Ping to a remote host works, but packet size >1500 bytes causes fragmentation and

failure. Reason?

A switch with 48 ports shows 95% MAC table utilization and begins dropping frames

during peak hours. Why does performance degrade?