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 type of cable carries data as pulses of light?

  1. ACoaxial cable
  2. BTwisted-pair cable
  3. CFibre-optic cable
  4. DShielded copper cable
2.Easy

Which OSI layer transmits raw bits as electrical, optical or radio signals?

  1. APhysical layer
  2. BSession layer
  3. CData link layer
  4. DNetwork layer
3.Easy

A MAC address identifies:

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

Which DNS record type maps a host name to an IPv6 address?

  1. ACNAME
  2. BA
  3. CMX
  4. DAAAA
5.Medium

Which subnet mask corresponds to /20?

  1. A255.255.255.240
  2. B255.255.240.0
  3. C255.255.248.0
  4. D255.255.224.0
6.Medium

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

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

How does fragmentation differ in IPv6 compared with IPv4?

  1. AIPv6 does not allow packets larger than 576 bytes
  2. BRouters never fragment IPv6 packets; only the source can, using path MTU discovery
  3. CIPv6 fragments at the transport layer inside TCP
  4. DIPv6 routers fragment every packet larger than 64 bytes before forwarding it on the path
8.Hard

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

  1. A1500 bytes
  2. B9000 bytes in every network
  3. C65,535 bytes
  4. D64 bytes

Answer key

  1. 1. C · Fibre-optic cable
  2. 2. A · Physical layer
  3. 3. B · A network interface on the local link
  4. 4. D · AAAA
  5. 5. B · 255.255.240.0
  6. 6. D · It is the router used for traffic to other networks
  7. 7. B · Routers never fragment IPv6 packets; only the source can, using path MTU discovery
  8. 8. A · 1500 bytes

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