Diagnostic Questions - Higher Computer Systems

State the number of bits Unicode usesto represent characters

• 17
• 16
• 8
• 7

Which graphic file format is more suitable to represent a photograph?

• Bit-Mapped
• Vector

Identify the next step in the Fetch and Execute cycle: Step 1. The processor sets up the address bus with the correct memory address.

• The instruction is fetched from the memory location using the data bus and is stored on the instruction register.
• The processor activates the read line on the control bus
• The instruction I the instruction register is then interpreted by the decoded and executed.

State the key used to encrypt personal data in the process of encryption

• Public Key
• Private Key

A method of improving processor performance is increasing the width of the data. Identify the matching explanation.

• Multiple instructions can be executed simultanously
• More bits can be transferred in one operation
• Instructions can be executed faster
• Frequently accessed instructions/data can be accessed quicker

Identify the two costs of a Denial of Service attack

• Lost revenue
• Labour Cost
• Staff Training
• Equipment Cost

Identify the intelligent systems that can be used to reduce environmental impact

• Traffic Control
• Heating Systems
• Car Management Systems
• Staff Digital Sign In System

When tracking cookies are creating, where are they sent?

• To the user's computer
• To the cookie's author
• To the internet service provider
• To the government

Name the act in which it is illegal to gain unauthorised access to computer material

• Copyright Designs and Patent Act
• GDPR
• Computer Misuse Act 1990
• The Data Protection Act 1998

State the impact of increasing the number of bits for the mantissa (2 answers)

• Increasing the precision of the number
• Increasing the range of the number
• Decreasing the range of the number
• Decreasing the precision of the number