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

  1. AFrame
  2. BSegment
  3. CMessage
  4. DPacket
2.Easy

Which protocol is used to send email between mail servers?

  1. APOP3
  2. BIMAP
  3. CSNMP
  4. DSMTP
3.Easy

What does LAN stand for?

  1. ALinked application node
  2. BLogical address number
  3. CLarge access network
  4. DLocal area network
4.Medium

Why does a switch sometimes send a frame out of all ports except the one it came in on?

  1. AThe frame has a wrong IP checksum and must be checked by every host
  2. BThe switch is acting as a router
  3. CThe frame is too large for one port
  4. DThe destination MAC address is not yet in its address table
5.Medium

What is the IPv6 loopback address?

  1. A::1
  2. Bff02::1
  3. Cfe80::1
  4. D::
6.Medium

What does an MX record in DNS specify?

  1. AThe name servers for a zone
  2. BThe IPv4 address of a web server
  3. CThe mail servers that accept email for a domain
  4. DAn alias name for another host
7.Hard

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

  1. A1500 bytes
  2. B65,535 bytes
  3. C9000 bytes in every network
  4. D64 bytes
8.Hard

How does a content delivery network (CDN) mainly improve web performance?

  1. AIt removes the need for DNS lookups
  2. BIt increases the bandwidth of the users' own home connections
  3. CIt replaces TCP with a faster transport protocol
  4. DIt serves cached content from servers close to the users

Answer key

  1. 1. A · Frame
  2. 2. D · SMTP
  3. 3. D · Local area network
  4. 4. D · The destination MAC address is not yet in its address table
  5. 5. A · ::1
  6. 6. C · The mail servers that accept email for a domain
  7. 7. A · 1500 bytes
  8. 8. D · It serves cached content from servers close to the users

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