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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1.Easy

Which protocol gives secure, encrypted remote login to another computer?

  1. ASNMP
  2. BTelnet
  3. CSSH
  4. DFTP
2.Easy

What is a network interface card (NIC)?

  1. AA cable that links two routers
  2. BSoftware that resolves domain names
  3. CA server that stores web pages
  4. DHardware that connects a computer to a network
3.Easy

How is an IPv6 address usually written?

  1. ASix pairs of hexadecimal digits separated by dashes or colons
  2. BEight groups of four hexadecimal digits separated by colons
  3. CSixteen decimal numbers separated by dots
  4. DFour decimal numbers separated by dots
4.Medium

A browser receives HTTP status code 404. What does it mean?

  1. AThe server had an internal error
  2. BThe requested resource was not found
  3. CThe client must log in first
  4. DThe request succeeded
5.Medium

What is the role of a default gateway on a host?

  1. AIt is the switch port the host is connected to
  2. BIt assigns MAC addresses
  3. CIt is the router used for traffic to other networks
  4. DIt is the DNS server
6.Medium

Which protocol does the "ping" command use?

  1. AICMP
  2. BHTTP
  3. CUDP
  4. DTCP
7.Hard

A PC can reach printers on its own subnet but nothing beyond it. Its IP address and mask are correct. What is the most likely fault?

  1. AA faulty DNS server setting
  2. BA missing or wrong default gateway
  3. CA duplicate MAC address on the internet
  4. DThe TCP window is too small
8.Hard

What does BGP mainly do on the internet?

  1. AEncrypts data between routers
  2. BExchanges routing information between autonomous systems
  3. CResolves names to addresses
  4. DAssigns IP addresses to home users through their internet providers

Answer key

  1. 1. C · SSH
  2. 2. D · Hardware that connects a computer to a network
  3. 3. B · Eight groups of four hexadecimal digits separated by colons
  4. 4. B · The requested resource was not found
  5. 5. C · It is the router used for traffic to other networks
  6. 6. A · ICMP
  7. 7. B · A missing or wrong default gateway
  8. 8. B · Exchanges routing information between autonomous systems

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