IGCSE Computer Science

A type of network attack that tries to prevent legitimate users from accessing a service?

• Worm

• Denial of Service (DoS)

• Trojan

• Virus

Select all the valid non-physical means of securing a network ...

• Locking the server room door

• Backing up file server data regularly

• Authenticating username & password

• Setting access control rights for users

• Installing and customizing firewall

What is the BEST word to complete this sentence?

Hacking is the attempt to gain _______________ access to a computer system and the data is contains.

• unregulated

• unauthorised

• priviliged

• backdoor

The rules that specify how data is transmitted.

• Protocols
• Parallels
• Bandwidth
• Mulitiplexers

Data transmission in both directions simultaneously.

• Full Duplex
• Double Duplex
• Half Duplex
• Parallel Duplex

Choose the best answer to complete this sentence:

Software refers to the ________ instructions that can be stored on secondary storage devices and loaded into main memory to be executed.

• program

• written

• data

• saved

Choose the best word to complete this sentence:

Operating systems are special programs that control all aspects of a computer's hardware and software and provide an ___________ between the user and the physical machine.

• interface

• relationship

• application

• engagement

What are the two main categories of software?

• Apps & Games
• Applications & Systems
• Office & Adobe
• OS & Games

Which of the following is contained in the ROM BIOS?

• Boot File
• Apps
• Utilities
• User Interface

What does BIOS stand for?

• Broadband Internet Operating System
• Basic Input Output System
• Basic Internet Operating System
• Binary Input Output System