Computer networks worksheet with answers

Free printable Computer networks worksheet: 8 problems from easy to exam level, with an answer key. Print it or save it as a PDF.

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Name: ____________________   Date: ____________

1.Easy

Which protocol lets an email client read mail while keeping messages and folders on the server?

  1. ASMTP
  2. BIMAP
  3. CSNMP
  4. DDHCP
2.Easy

What does LAN stand for?

  1. ALarge access network
  2. BLocal area network
  3. CLinked application node
  4. DLogical address number
3.Easy

What is the main job of a firewall?

  1. ATo speed up downloads by caching files
  2. BTo assign IP addresses to hosts
  3. CTo allow or block traffic according to security rules
  4. DTo convert domain names into addresses
4.Medium

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

  1. A2
  2. B1
  3. C4
  4. D0
5.Medium

Which protocol does the "ping" command use?

  1. AHTTP
  2. BTCP
  3. CUDP
  4. DICMP
6.Medium

How many usable host addresses does a /24 IPv4 network have?

  1. A252
  2. B254
  3. C255
  4. D256
7.Hard

Why does IPv6 not need NAT for address shortage?

  1. AIts 128-bit address space is large enough to give every device a global address
  2. BIPv6 encrypts all addresses
  3. CIPv6 only works on local networks, so addresses never need to be shared globally
  4. DIPv6 does not use addresses
8.Hard

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

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

Answer key

  1. 1. B · IMAP
  2. 2. B · Local area network
  3. 3. C · To allow or block traffic according to security rules
  4. 4. D · 0
  5. 5. D · ICMP
  6. 6. B · 254
  7. 7. A · Its 128-bit address space is large enough to give every device a global address
  8. 8. C · A lost TCP segment delays all multiplexed streams until it is retransmitted

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