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

In which network topology is every device connected to one central switch or hub?

  1. ARing
  2. BStar
  3. CFull mesh
  4. DBus
2.Easy

A MAC address identifies:

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

Which protocol automatically gives devices an IP address on a local network?

  1. ADNS
  2. BSMTP
  3. CFTP
  4. DDHCP
4.Medium

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

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

What is the network address of the host 192.168.10.77/26?

  1. A192.168.10.76
  2. B192.168.10.0
  3. C192.168.10.128
  4. D192.168.10.64
6.Medium

HTTP is stateless. How do websites usually keep a user logged in across requests?

  1. ABy storing the password in the URL
  2. BWith cookies holding a session identifier or token
  3. CBy keeping the TCP connection open for days
  4. DBy giving each user a fixed IP address
7.Hard

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

  1. A1 collision domain, 1 broadcast domain
  2. B8 collision domains, 1 broadcast domain
  3. C8 collision domains, 8 broadcast domains
  4. D1 collision domain, 8 broadcast domains
8.Hard

How does a content delivery network (CDN) mainly improve web performance?

  1. AIt increases the bandwidth of the users' own home connections
  2. BIt removes the need for DNS lookups
  3. CIt serves cached content from servers close to the users
  4. DIt replaces TCP with a faster transport protocol

Answer key

  1. 1. B · Star
  2. 2. B · A network interface on the local link
  3. 3. D · DHCP
  4. 4. C · 192.168.0.0/23
  5. 5. D · 192.168.10.64
  6. 6. B · With cookies holding a session identifier or token
  7. 7. B · 8 collision domains, 1 broadcast domain
  8. 8. C · It serves cached content from servers close to the users

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