Computer networks worksheet with answers

In the client-server model:

1. AServers send requests and clients answer them
2. BClients send requests and a server provides the service
3. CEvery computer stores the whole internet
4. DAll devices must be in the same room

Which device forwards packets between different networks based on IP addresses?

1. AA repeater
2. BA hub
3. CA switch
4. DA router

Which protocol automatically gives devices an IP address on a local network?

1. AFTP
2. BDNS
3. CSMTP
4. DDHCP

What is a cyclic redundancy check (CRC) used for in Ethernet frames?

1. ADetecting transmission errors
2. BChoosing the best route
3. CCorrecting every bit error automatically
4. DEncrypting the frame

Which metric does RIP use to choose routes?

1. AMeasured delay
2. BLink bandwidth
3. CBusiness policy
4. DHop count

NAT (network address translation) is mainly used to:

1. AEncrypt traffic between two sites
2. BIncrease the speed of a network cable
3. CLet many devices with private addresses share one public IP address
4. DTranslate domain names into IP addresses for devices on a local network

Which routing protocol is a link-state protocol?

1. AOSPF
2. BBGP
3. CRIP
4. DARP

A student runs a game server on a PC behind a home NAT router. Friends on the internet cannot connect. What is the usual fix?

1. AChange the PC's subnet mask to /32
2. BTurn off the PC's DNS client
3. CGive the PC a different MAC address so the router can find it from outside
4. DConfigure port forwarding on the router to the PC's private address