The logical expression A+A.B is equivalent to

1. A

2. B

3. A+B

4. A.B

Which one of the following can be used as a coding scheme to represent characters ?

1. EBCDIC

2. IEEE

3. ANSI

4. TURBO

Which one of the following is not a component of a closed system ?

1. Feedback

2. Input

3. Output

4. Boundary

Which of the following is not an essential function of any type of information system ?

1. Collecting Information

2. Recording Information

3. Processing Information

4. Mining of Information

Which one of the following is not a value attribute of information ?

1. Accuracy

2. Size

3. Relevance

4. Timeliness

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

1. Operational

2. Tactical

3. Strategic

4. Financial

Which one of the following is false about an Expert System ?

1. Expert systems can only be used by subject experts.

2. Subject experts are required to build Expert Systems.

3. Expert systems can provide answers to questions through reasoning.

4. Expert Systems can be used as a teaching tool to supplement teachers.

Which one of the following phases comes first in the System Development Life Cycle (SDLC) ?

1. System Implementation

2. System Design

3. System Analysis

4. System Maintenance

Which one of the following statements is correct ?

1. A test plan may be developed in parallel with system design

2. Test cases are identified first and then a test plan is made.

3. Testing is not an essential phase during system development.

4. Unit testing refers to the testing that happens after integrating all the individual modules into a complete system.

What is the key combination needed to restart your computer in Microsoft Windows environment ?

1. Ctrl+Alt+Del

2. Ctrl+Shift+Del

3. Ctrl+Alt+Shift

4. Ctrl+Alt+Esc

In Microsoft Windows desktop, disk drive icons are usually displayed in a folder named

1. My Documents.

2. My Computer

3. Recycle Bin.

4. Control Panel

In Microsoft Word, what is the tool that can be used to get the number of words in a selected text document ?

1. Spelling & Grammar

2. Speech

3. Auto Correct Options

4. Word Count

Which of the following is a valid example for an e-mail address ?

1. www.schoolnet.lk

2. exams@doenets.lk

3. http://www.doenets.lk

4. www.education.gov.lk

In a Microsoft Excel worksheet, cell A1 and A2 contain the values 10 and 20 respectively. If you type = A1+A2 into cell A3, it will display

1. =A1+A2 as a label

2. 30 as the sum of A1 and A2

3. as a date function

4. only first four characters

The formula=(A1∗B1)/(C1+B1) is stored in the cell B8 in a Microsoft Excel worksheet, What will be the value displayed in B8 if the values in A1, B1 and C1 are as shown in the following table ?

1. 16.25

2. 6.25

3. 5.00

4. 0.70