Computer networks worksheet with answers

A MAC address identifies:

1. AA user account
2. BA router's public IP
3. CA website
4. DA network interface on the local link

Which application protocol is used to request web pages from a web server?

1. ASNMP
2. BARP
3. CSMTP
4. DHTTP

What is throughput?

1. AThe rate at which data is actually delivered successfully
2. BThe number of routers on a path
3. CThe time a packet takes to cross a link
4. DThe theoretical maximum rate a link can carry under ideal conditions

What is the main difference between the HTTP methods GET and POST?

1. AGET deletes a resource, POST reads it from the server's database
2. BGET uses UDP, POST uses TCP
3. CGET retrieves a resource, POST submits data in the request body
4. DGET is encrypted, POST is not

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

1. A1
2. B0
3. C2
4. D4

What does ARP do?

1. AFinds the MAC address that belongs to an IP address on the local network
2. BResolves domain names
3. CAssigns IP addresses automatically to hosts when they join the local network
4. DRoutes packets on the internet

Why does IPv6 not need NAT for address shortage?

1. AIPv6 encrypts all addresses
2. BIPv6 only works on local networks, so addresses never need to be shared globally
3. CIts 128-bit address space is large enough to give every device a global address
4. DIPv6 does not use addresses

Head-of-line blocking in HTTP/2 over TCP occurs because:

1. AEach request needs its own new TCP connection, so later requests wait in a queue
2. BServers cannot handle parallel requests
3. CHTTP/2 uses UDP
4. DA lost TCP segment delays all multiplexed streams until it is retransmitted