OCR CS Revision Lesson 1

OCR CS Revision Lesson 1

By Shahbaz Farooq

Multiple Choice

Which of these is the most secure way of data transfer?

• HTTP
• HTTPS

Multiple Choice

A MAC Address is usually recorded in

• Binary

• Denary

• Floats

• Hexadecimal

Multiple Choice

What method of attack is shown in the image?

• DOS

• Brute Force

• SQL Injection

• DNS Pharming

Multiple Choice

ROM stands for...

• Read Optical Memory
• Random Only Memory
• Read Only Memory
• Random Optical Memory

Multiple Choice

RAM stands for ...

• Read Access Memory
• Random Application Memory
• Read Application Memory
• Random Access Memory

Multiple Choice

Why is Virtual Memory needed in a computer system?

• It is used as a fast type of memory for programs currently in use to speed up the performance of a computer.
• When several programs run at the same time, the RAM can be full. Instead of closing programs the Operating system uses virtual memory to store some data.

Multiple Choice

Not intended to be a portable storage device.

• CD
• Flash memory
• DVD
• Internal hard disk

Multiple Choice

Large computers used for backup storage are called

• Supercomputers
• Servers
• Clients
• Giants

Multiple Choice

Which of the following is not a type of storage. (1/2)

• Magnetic
• Solid State
• Optical
• Hard Drive

Multiple Choice

If the processing speed goes from 1GHZ to 4GHZ and the processor is changed from an 8 core to a dual core processor – what is the exact effect on the performance of the computer

• The number of instructions executed per second doubles
• The number of instructions executed per second quadruples
• The number of instructions executed per second is halved
• The number of instructions executed per second stays the same

Multiple Choice

If the processing speed goes up from 1GHZ to 4GHZ and the number of cores goes from 1 to 8 – what is the exact effect on the performance of the computer?

• Eight Times Faster
• Sixteen Times Faster
• Thirty Two Times Faster
• Sixty Four Times Faster

Multiple Choice

Processors have a speed measured in

• Hertz
• Bits
• Bytes
• Seconds