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 LAN stand for?

  1. ALarge access network
  2. BLogical address number
  3. CLinked application node
  4. DLocal area network
2.Easy

What is the name of the data unit at the data link layer?

  1. ASegment
  2. BMessage
  3. CFrame
  4. DPacket
3.Easy

Which IEEE standard family defines Wi-Fi wireless LANs?

  1. AIEEE 802.1Q
  2. BIEEE 802.15
  3. CIEEE 802.11
  4. DIEEE 802.3
4.Medium

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

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

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

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

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

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

Which of these addresses is a public (not RFC 1918 private) IPv4 address?

  1. A192.168.255.1
  2. B10.255.0.1
  3. C172.31.0.1
  4. D172.32.0.1
8.Hard

Which routing protocol is a link-state protocol?

  1. ABGP
  2. BOSPF
  3. CARP
  4. DRIP

Answer key

  1. 1. D · Local area network
  2. 2. C · Frame
  3. 3. C · IEEE 802.11
  4. 4. D · Many compromised machines flood a target with traffic
  5. 5. D · The requested resource was not found
  6. 6. C · It tracks connections and allows replies that belong to established sessions
  7. 7. D · 172.32.0.1
  8. 8. B · OSPF

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