Computer Science Quiz 2

Off-line operation is the operation of devices without the control of

• Memory

• CPU

• ALU

• Control unit

• None of the others

is a memory type with capacitors that need to be refreshed periodically.

• SRAM

• DRAM

• ROM

• CROM

In magnetic disks, the defines how fast the disk is spinning.

• Seek time

• Tranfer time

• Rotational speed

• None of others

What is the name given to the molecular-scale computer?

• Femtocomputer

• Nanocomputer

• Supercomputer

• Microcomputer

• None of the others

Which is a unit representing the no bits of discrete.

• Baud

• Byte

• Bit

• All of the others

• None of the others

When converting a decimal fraction to base b, we repeatedly b.

• Divide by

• Multiply by

• Add to

• Subtract from

The binary equivalent of the Octal number 13.54 is

• 1011.1011

• 1101.1110

• 1001.1110

• All of the others

• None of the others

In a positional number system with base b, we can always find the number of digits of an integer. So how many bits can we find in the decimal number 20 in hexadecimal system?

• 1

• 2

• 3

• 4

• None of the others

In the sign-and-magnitude representation, the memory location can hold four bits, assume that we have stored integer -6 in a memory location and we then try to subtract 7 to the integer. The computer's response is?

• 6

• -6

• 7

• -7

Different sets of bit patterns have been designed to represent text symbols. Each set is called a ?

• bit patterns

• binary

• code

• binary text file