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

1. A

2. B

3. A+B

4. A.B

The number of bits used to represents a decimal digit in Binary Coded Decimal (BCD) coding scheme is

1. 2

2. 4

3. 6

4. 8

Which of the following indicates the correct order of steps in System Development Life Cycle (SDLC) ?

1. Problem Definition, System Specification, System Design, System Implementation, System Testing, System Maintenance.

2. System Specification, Problem Definition, System Design, System Implementation, System Testing, Systems Maintenance.

3. Problem Definition, System Design, System Specification, System Implementation, System Testing, System Maintenance.

4. Problem Definition, System Specification, System Design, System Implementation, System Maintenance, System Testing.

Which of the following is most correct regarding the post- implementation review of a system ?

1. Post – implementation review is carried out during the design phase of the system development life cycle.

2. Post – implementation review is carried out during the testing phase of the system development life cycle.

3. Post – implementation review is carried out during the problem definition phase of the system development life cycle.

4. Post – implementation review is carried out during the maintenance phase of the system development life cycle.

Which of the following information system type supports operational management?

1. Expert System (ES)

2. Executive Support System (ESS)

3. Decision Support System (DSS)

4. Transaction Processing System (TPS)

Which of the following is not a component of an Expert System?

1. Inference Engine

2. Knowledge Base

3. Database

4. Knowledge Acquisition Facility

Which of the following is not correct regarding the data and or information?

1. Data must be processed to produce information.

2. Complete, accurate, relevant and timely information can be obtained from processed data for effective decision making.

3. Information is produced by performing one or more operations on data.

4. Information must be processed to produce data.

Which of the following is correct regarding System Maintenance Phase of the System Development Life Cycle?

1. System Maintenance is necessary to understand user requirements of the system.

2. System Maintenance is necessary to correct errors in the system during its life.

3. System Maintenance is carried out before Systems Design.

4. System Maintenance does not required any understanding of the system design or implementation.

Which of the following is not a usual processing step in Transaction Processing Systems (TPS)?

1. Data Validation

2. Data Capture

3. Data Processing

4. Intelligent Data Analysis

Which one of the following is not basic elements of a system?

1. Validation

2. Output

3. Input

4. Boundary

Which of the following command in a word processor could be used to know the number of words in a document?

1. Properties

2. Print Preview

3. Macros

4. Word Count

The shortcut Key combination CTRL+N in a word processor is used to

1. Open a new document

2. Save a document

3. Print a document

4. Close a document

Which website is not in Sri Lanka domain?

1. www.moe.gov.lk

2. www.gen.go.kr

3. www. doenets .lk

4. www.nie .lk

Which of the following could not be considered as an operating system software?

1. Microsoft Windows 7

2. Mac OS X

3. Fedora 11

4. Adobe Photoshop

The formula (A1+ B1) / C1 * A1 is stored in the cell C5 in a worksheet. What will be the value
displayed in C5 if the values in A1, B1, C1 are as show in the following table:

1. 0.5

2. 8.0

3. 1.2

4. 0.85