Question # 1

Which of the following is not a function of presentation layer in OSI model?

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Manage coding schemes

Check passwords

Provide services for compression of data

Provide services for encryption of data

An external variable is variable can be referenced in a declaration

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In main () only

In the first function that uses it

In any function that uses it

Outside of any function

A relation corresponds to the concept of a

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Table

Data structure

Procedure

View

The keyboard shortcut for decreasing font size is:

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SHIFT + <

CTRL + SHIFT +<

ALT + SHIFT + <

CTRL + ALT + <

OSI reference model has

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1 Layer

3 layers

6 layers

7 layers

In relational database a table is also called is

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Tuple

Relation

File

Schema

All of these are application software except?

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MS Word

MS Excel

MS Power point

Windows

In ERD model the relationship between two entities is represented by a

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Diamond symbol

Rectangular box

Oval symbol

Line

A,,,,,,,,,,,,,,,,is a series of declarations and statements surrounded by braces.

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Compound statement

If statement

If-else statement

Switch statement

Variables are created in

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RAM

ROM

Hard disk

Cache

Without primary key in a table data is

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Unique

Integrated

Redundant

Complete

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