The logical expression A + (Ā.B) is equivalent to

1. A

2. B

3. A+B

4. A.B

The number of bits used in the UNICODE coding scheme is

1. 7

2. 8

3. 9

4. 16

Which of the following is the earliest phase in the System Development Life Cycle?

1. System Design

2. System Analysis

3. System Maintenance

4. System Testing

Which of the following statements is not correct?

1. Top management requires information to make strategic decisions.

2. Middle management requires information to control and monitor business operations.

3. Lower management requires operational data.

4. Major characteristic of the information requires to make intelligent decisions is the volume of data.

Which of the following is not a major step of transaction processing?

1. Data capture

2. Data validation

3. Data preprocessing

4. The use of unstructured data

Which of the following is not a level of decision making?

1. Strategic Level

2. Tactical Level

3. Operational Level

4. Intelligent Level

Which of following is not a problem that can happen during system development?

1. Estimating cost and time

2. Capturing user requirements

3. Coding programs

4. Marketing the developed product

Which statement is incorrect about System Testing?

1. It is part of the quality assurance process.

2. It is developed in parallel with systems design.

3. Individual module testing is one of the main activities of system testing.

4. Testing is done during the maintenance stage of a system.

Consider a computer as a system. Which of the following statements is correct?

1. User is part of the input.

2. User is part the environment.

3. Response time can be a feed back of the system.

4. Software is part of the environment.

Which of the following is not a basic component of a computer system?

1. Central Processing Unit

2. Input Unit

3. Output Unit

4. Networking Unit

Which of following is a core function of an operating system?

1. Memory management

2. Graphic editing

3. Music recording

4. Web browsing

By Changing the page orientation a user can

1. change the page margins

2. change the paper size

3. set text direction as vertical or horizontal

4. set page direction as landscape or portrait

The distance between two lines of text in a paragraph created using a word processing software can be changed by setting.

1. The margins of a page.

2. The line justification.

3. The line spacing.

4. The paragraph spacing

http://www.schoolnet.lk is an example of

1. an e-mail address of a school.

2. Uniform Resource Locator (URL)

3. address of a web browser.

4. The IP address of school network.

Which character can be used to start a formula in a spreadsheet?

1. equal sign (=)

2. question mark (?)

3. double quote (“)

4. Single quote (‘)