IGCSE Computer Science Paper-1: Specimen Questions with Answers 59 - 60 of 164

Question 59

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List the main points of differences between LIFO and FIFO.

Explanation

The LIFO and FIFO

The main points of differences are:

  • LIFO stands for Last in First Out whereas FIFO stands for First in First Out.
  • In case of LIFO, the material received last is consumed first. Whereas in case of FIFO, the material received first is consumed first.

Question 60

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Short Answer▾

Explain the following terms:

  • Wired Equivalent Privacy
  • Wireless Application Protocol,
  • LDAP (Light Weight Directory Access Protocol) .

Explanation

Wired Equivalent Privacy: It is one of the security protocols specified by the IEEE Wireless Fidelity (Wi-Fi) standard, 802.11b. It provides a wireless local area network (WLAN) with a level of security. Open System authentication and Shared Key authentication are the two methods of authentication that can be used with WEP.

The Wired Equivalent Privacy

Wireless Application Protocol: It is a communication protocol being used for wireless data access through most mobile wireless networks. This protocol further facilitates instant connectivity between interactive wireless devices (for example, mobile phones) and the Internet.

The Wireless Application Protocol

LDAP (Light Weight Directory Access Protocol) : It is a client/server based protocol that is being used to read and edit directories over IP Networks. This protocol is also used to access and manage directory information. During the general interaction, the client establishes a session with an LDAP server. The operation are then performed by the directory data. The session with the server gets closed as soon as the client finishes making requests.

The Light Weight Directory Access Protocol

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