Computer networks worksheet with answers

What does LAN stand for?

1. ALocal area network
2. BLinked application node
3. CLarge access network
4. DLogical address number

In the client-server model:

1. AClients send requests and a server provides the service
2. BServers send requests and clients answer them
3. CAll devices must be in the same room
4. DEvery computer stores the whole internet

Which IPv4 address is the standard loopback address of a host?

1. A0.0.0.0
2. B255.255.255.255
3. C192.168.0.1
4. D127.0.0.1

How does TLS typically use asymmetric and symmetric cryptography?

1. AOnly symmetric cryptography is used, with a fixed shared password
2. BOnly asymmetric cryptography is used throughout
3. CAsymmetric methods agree keys and authenticate; symmetric ciphers encrypt the data
4. DSymmetric methods agree keys and authenticate; asymmetric ciphers encrypt all the data

Which IPv4 header field stops packets from circulating forever in a routing loop?

1. AType of service
2. BHeader checksum
3. CTime to live (TTL)
4. DIdentification

Using even parity, which parity bit is added to the data bits 1011001?

1. A4
2. B2
3. C0
4. D1

What does the Diffie-Hellman key exchange achieve on its own, and what is its weakness?

1. AIt authenticates both users with passwords, but needs a central server
2. BIt agrees a shared secret over a public channel, but alone it is open to a man-in-the-middle
3. CIt encrypts bulk data directly over a public channel, but it is far too slow for large files and video
4. DIt signs certificates for websites, but only works with short keys

Which routing protocol is a link-state protocol?

1. ARIP
2. BBGP
3. CARP
4. DOSPF