Unit 1 Exam Prep 2

What type of computer system is usually used for weather forecasting?

• Micro computers

• Work stations

• Mainframe computers

• Super computers

Which of the following devices is used to store permanent binary information?

• ROM

• RAM

• PROM

• EPROM

Which of the following statements about flip-flops are TRUE? I. Flip-flops are examples of defective logic circuits. II. Flip-flops are two-state devices that can only store 1's and 0's. III. Registers are made up of flip-flops.

• I and II only

• I and III only

• II and III only

• I, II and III

A popular scheme for representing characters is?

• Word size

• Flip-flop

• ASCII

• Logic gate

What is the 8-bit sign and magnitude representation of the decimal number -29?

• 00011101

• 00010011

• 10011101

• 10000001

What is the purpose of the fetch part of the fetch-decode-execute cycle in a computer?

• Obtaining an instruction from memory

• Determining what the operands are

• Determining what the operation is

• Performing a task to get the results

Which of the following control structures can be used when attempting to read data from a file where the number of records is not known?

• A 'for' loop

• A sentinel control loop

• A switch control structure

• An 'if...else' control structure

Which of the following statements about logic gates are FALSE? I. A NOT gate can have one or more inputs, but only one output. II. A NOR gate can have only one input and only one output. III. A NOR gate can have one or more inputs, but only one output.

• I and II only

• I and III only

• II and III only

• I, II and III

Which of the following components consists of very high speed technology?

• ALU

• CU

• Registers

• RAM

Which of the following statements will correctly read a value entered by a user into 'num'?

• scanf("%lf", num);

• scanf("%lf", &num);

• scanf("%lf", num);

• scanf("%lf", &num);