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 IEEE standard family defines Wi-Fi wireless LANs?

  1. AIEEE 802.1Q
  2. BIEEE 802.3
  3. CIEEE 802.11
  4. DIEEE 802.15
2.Easy

Which transport protocol provides reliable, ordered delivery with acknowledgements?

  1. AIP
  2. BTCP
  3. CUDP
  4. DICMP
3.Easy

Which application protocol transfers files using separate control and data connections?

  1. ASMTP
  2. BDNS
  3. CHTTP
  4. DFTP
4.Medium

Which protocol does the "ping" command use?

  1. AUDP
  2. BHTTP
  3. CICMP
  4. DTCP
5.Medium

Why is UDP often preferred for live video calls?

  1. AUDP guarantees every packet arrives, so the picture never freezes
  2. BUDP is required for all video
  3. CLow delay matters more than retransmitting every lost packet
  4. DUDP encrypts data automatically
6.Medium

What is the main purpose of a VLAN?

  1. ATo encrypt all traffic between switches so other departments cannot read it
  2. BTo split one physical switched network into separate broadcast domains
  3. CTo give each device a public IP address
  4. DTo increase the speed of every switch port
7.Hard

An 8-port switch (no VLANs) has one host on each port. How many collision domains and broadcast domains are there?

  1. A8 collision domains, 8 broadcast domains
  2. B8 collision domains, 1 broadcast domain
  3. C1 collision domain, 8 broadcast domains
  4. D1 collision domain, 1 broadcast domain
8.Hard

A TCP connection has a 64 KB window and a 100 ms round-trip time, and no window scaling. What is its approximate maximum throughput?

  1. AAbout 640 Mbit/s
  2. BAbout 5 Mbit/s
  3. CAbout 0.5 Mbit/s
  4. DAbout 50 Mbit/s

Answer key

  1. 1. C · IEEE 802.11
  2. 2. B · TCP
  3. 3. D · FTP
  4. 4. C · ICMP
  5. 5. C · Low delay matters more than retransmitting every lost packet
  6. 6. B · To split one physical switched network into separate broadcast domains
  7. 7. B · 8 collision domains, 1 broadcast domain
  8. 8. B · About 5 Mbit/s

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