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

Which protocol lets an email client read mail while keeping messages and folders on the server?

  1. AIMAP
  2. BDHCP
  3. CSMTP
  4. DSNMP
2.Easy

What is a network interface card (NIC)?

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

What is the default port number for HTTPS?

  1. A21
  2. B25
  3. C443
  4. D80
4.Medium

TLS provides which security properties for HTTPS?

  1. AProtection against all malware and phishing on the visited site
  2. BOnly faster loading
  3. CConfidentiality, integrity and server authentication
  4. DAnonymity of the user
5.Medium

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

  1. AHeader checksum
  2. BTime to live (TTL)
  3. CType of service
  4. DIdentification
6.Medium

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

  1. A1
  2. B4
  3. C0
  4. D2
7.Hard

In a TCP connection, what does the receive window (rwnd) control?

  1. AThe retransmission time-out, calculated from the measured round-trip time of each segment
  2. BThe size of each IP packet header
  3. CHow much unacknowledged data the sender may send, based on the receiver's buffer
  4. DThe number of open ports
8.Hard

Why does IPv6 not need NAT for address shortage?

  1. AIPv6 only works on local networks, so addresses never need to be shared globally
  2. BIPv6 encrypts all addresses
  3. CIts 128-bit address space is large enough to give every device a global address
  4. DIPv6 does not use addresses

Answer key

  1. 1. A · IMAP
  2. 2. C · Hardware that connects a computer to a network
  3. 3. C · 443
  4. 4. C · Confidentiality, integrity and server authentication
  5. 5. B · Time to live (TTL)
  6. 6. C · 0
  7. 7. C · How much unacknowledged data the sender may send, based on the receiver's buffer
  8. 8. C · Its 128-bit address space is large enough to give every device a global address

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