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

In the client-server model:

  1. AClients send requests and a server provides the service
  2. BEvery computer stores the whole internet
  3. CAll devices must be in the same room
  4. DServers send requests and clients answer them
2.Easy

Which type of network covers a large geographic area, such as a whole country?

  1. AA wide area network (WAN)
  2. BA personal area network (PAN)
  3. CA local area network (LAN)
  4. DA virtual LAN (VLAN)
3.Easy

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

  1. ATelnet
  2. BSNMP
  3. CFTP
  4. DSSH
4.Medium

What is the main purpose of a VLAN?

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

Which IPv4 header field stops packets from circulating forever in a routing loop?

  1. ATime to live (TTL)
  2. BType of service
  3. CHeader checksum
  4. DIdentification
6.Medium

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

  1. A192.168.0.0/23
  2. B192.168.0.0/25
  3. C192.168.1.0/23
  4. D192.168.0.0/22
7.Hard

What does BGP mainly do on the internet?

  1. AExchanges routing information between autonomous systems
  2. BEncrypts data between routers
  3. CAssigns IP addresses to home users through their internet providers
  4. DResolves names to addresses
8.Hard

A path has 100 Mbit/s bandwidth and a 40 ms round-trip time. How much data must be in flight to keep it fully used?

  1. A4 kB
  2. B500 kB
  3. C2.5 MB
  4. D50 kB

Answer key

  1. 1. A · Clients send requests and a server provides the service
  2. 2. A · A wide area network (WAN)
  3. 3. D · SSH
  4. 4. A · To split one physical switched network into separate broadcast domains
  5. 5. A · Time to live (TTL)
  6. 6. A · 192.168.0.0/23
  7. 7. A · Exchanges routing information between autonomous systems
  8. 8. B · 500 kB

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