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

How many layers does the OSI reference model have?

  1. A9
  2. B4
  3. C5
  4. D7
2.Easy

What does LAN stand for?

  1. ALogical address number
  2. BLarge access network
  3. CLocal area network
  4. DLinked application node
3.Easy

A MAC address identifies:

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

Which protocol does the "ping" command use?

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

Which single prefix summarises both 192.168.0.0/24 and 192.168.1.0/24?

  1. A192.168.0.0/25
  2. B192.168.1.0/23
  3. C192.168.0.0/23
  4. D192.168.0.0/22
6.Medium

A router has routes for 10.0.0.0/8 and 10.1.0.0/16. Which route does it use for a packet to 10.1.5.5?

  1. ABoth routes, splitting the traffic equally
  2. B10.0.0.0/8, because it covers more addresses than the /16
  3. C10.0.0.0/8, because it was added first
  4. D10.1.0.0/16, because it is the longest matching prefix
7.Hard

By Shannon's theorem, what is the capacity of a 1 MHz channel with a signal-to-noise ratio of 255?

  1. A8 Mbit/s
  2. B255 Mbit/s
  3. C2 Mbit/s
  4. D1 Mbit/s
8.Hard

What is the maximum transmission unit (MTU) of standard Ethernet payload?

  1. A65,535 bytes
  2. B9000 bytes in every network
  3. C64 bytes
  4. D1500 bytes

Answer key

  1. 1. D · 7
  2. 2. C · Local area network
  3. 3. C · A network interface on the local link
  4. 4. D · ICMP
  5. 5. C · 192.168.0.0/23
  6. 6. D · 10.1.0.0/16, because it is the longest matching prefix
  7. 7. A · 8 Mbit/s
  8. 8. D · 1500 bytes

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