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

What does a VPN mainly provide?

  1. AA faster physical connection to the internet through a dedicated line
  2. BAutomatic backup of files to a server
  3. CA free public IP address for every device
  4. DAn encrypted tunnel across an untrusted network such as the internet
2.Easy

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

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

What does LAN stand for?

  1. ALogical address number
  2. BLocal area network
  3. CLarge access network
  4. DLinked application node
4.Medium

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

  1. AHeader checksum
  2. BTime to live (TTL)
  3. CIdentification
  4. DType of service
5.Medium

How does a stateful firewall differ from a simple packet filter?

  1. AIt blocks all incoming traffic without exceptions, including replies to outgoing requests
  2. BIt encrypts every packet it forwards
  3. CIt only checks the MAC address of each frame
  4. DIt tracks connections and allows replies that belong to established sessions
6.Medium

Using even parity, which parity bit is added to the data bits 1011001?

  1. A2
  2. B1
  3. C4
  4. D0
7.Hard

Which mechanism prevents broadcast loops in a network with redundant switch links?

  1. ASpanning Tree Protocol
  2. BDHCP snooping
  3. CNAT
  4. DARP caching
8.Hard

Which routing protocol is a link-state protocol?

  1. ABGP
  2. BRIP
  3. COSPF
  4. DARP

Answer key

  1. 1. D · An encrypted tunnel across an untrusted network such as the internet
  2. 2. D · SSH
  3. 3. B · Local area network
  4. 4. B · Time to live (TTL)
  5. 5. D · It tracks connections and allows replies that belong to established sessions
  6. 6. D · 0
  7. 7. A · Spanning Tree Protocol
  8. 8. C · OSPF

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