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

What is a network interface card (NIC)?

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

What does LAN stand for?

  1. ALogical address number
  2. BLinked application node
  3. CLocal area network
  4. DLarge access network
3.Easy

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

  1. AFull mesh
  2. BRing
  3. CStar
  4. DBus
4.Medium

How does TLS typically use asymmetric and symmetric cryptography?

  1. ASymmetric methods agree keys and authenticate; asymmetric ciphers encrypt all the data
  2. BAsymmetric methods agree keys and authenticate; symmetric ciphers encrypt the data
  3. COnly symmetric cryptography is used, with a fixed shared password
  4. DOnly asymmetric cryptography is used throughout
5.Medium

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

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

What is the main purpose of a VLAN?

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

Which routing protocol is a link-state protocol?

  1. AARP
  2. BRIP
  3. CBGP
  4. DOSPF
8.Hard

By the Nyquist formula, what is the maximum bit rate of a noiseless 3 kHz channel using 4 signal levels?

  1. A6 kbit/s
  2. B3 kbit/s
  3. C12 kbit/s
  4. D24 kbit/s

Answer key

  1. 1. D · Hardware that connects a computer to a network
  2. 2. C · Local area network
  3. 3. C · Star
  4. 4. B · Asymmetric methods agree keys and authenticate; symmetric ciphers encrypt the data
  5. 5. A · It is the router used for traffic to other networks
  6. 6. D · To split one physical switched network into separate broadcast domains
  7. 7. D · OSPF
  8. 8. C · 12 kbit/s

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