Computer Awareness-66

1. ______Is the most widely used medium for telecommunications
Twisted Pair
Coaxial Cable
Optical Fiber
None
2. ______is a collection of conceptual tools for describing data, data relationships, data semantics and constraints
Data base
Data Model
E_R Model
None
3. All candidate keys excluding the primary key are known as
Compound key
Partial key
Alternative key
None
4. ____is the language that enable user to access or manipulate data as organized by appropriate data model
DML
SDL
DDL
All of the above
5. Association among two or more entities called
Entity
Entity set
Relationship
Degree of relation
6. The user commands that are used to interact with a database is called as
Query
Interaction
Command
Instruction
7. ____ is the keyboard shortcut key to close a running program
Alt+F7
Alt+F4
Alt+F6
Alt+F5
8. Superscript in MS-Word refers to____
Characters displayed below the line of the normal text
Characters displayed above the line of the normal text
Both (a) and (b)
None
9. In Assembly language–
Mnemonics are used to code operations
Alphanumeric symbols are used for addresses
Language lies between high-level language and machine
All of the above
10. The following computer’s memory is characterized by low cost per bit stored:
Buffer
Cache
Primary
Secondary
Score =
Correct answers: