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

How is an IPv6 address usually written?

  1. AEight groups of four hexadecimal digits separated by colons
  2. BFour decimal numbers separated by dots
  3. CSixteen decimal numbers separated by dots
  4. DSix pairs of hexadecimal digits separated by dashes or colons
2.Easy

Which command shows the routers a packet passes through on its way to a destination?

  1. Aipconfig
  2. Btraceroute (tracert on Windows)
  3. Cnetstat
  4. Dnslookup
3.Easy

In a peer-to-peer network:

  1. ADevices cannot communicate directly
  2. BOne central server handles every request
  3. CEach node can act as both a client and a server
  4. DOnly routers may share files
4.Medium

Which medium access method did classic shared (half-duplex) Ethernet use?

  1. ACSMA/CD
  2. BCSMA/CA
  3. CTDMA
  4. DToken passing
5.Medium

What characterises a distributed denial-of-service (DDoS) attack?

  1. AA virus deletes files on a single PC
  2. BAn attacker reads unencrypted Wi-Fi traffic from a nearby car
  3. CMany compromised machines flood a target with traffic
  4. DOne attacker guesses a user's password
6.Medium

A browser receives HTTP status code 404. What does it mean?

  1. AThe requested resource was not found
  2. BThe request succeeded
  3. CThe server had an internal error
  4. DThe client must log in first
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

Which routing protocol is a link-state protocol?

  1. ARIP
  2. BOSPF
  3. CARP
  4. DBGP

Answer key

  1. 1. A · Eight groups of four hexadecimal digits separated by colons
  2. 2. B · traceroute (tracert on Windows)
  3. 3. C · Each node can act as both a client and a server
  4. 4. A · CSMA/CD
  5. 5. C · Many compromised machines flood a target with traffic
  6. 6. A · The requested resource was not found
  7. 7. B · Routers never fragment IPv6 packets; only the source can, using path MTU discovery
  8. 8. B · OSPF

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