1.Which is the subset of SQL commands used to manipulate Oracle Database Structures, including tables?
a) Data Definition Language
b) Data Manipulation Language
c) Data Described Language
d) Data Retrieval Language
e) Data Control Language

2. Regular expressions are closed under?
a) Union
b) Intersection
c) Kleen star
d) All of the mentioned
e) none of these

3. DNS database contains?
a) name server records
b) hostname-to-address records
c) hostname aliases
d) all of the mentioned
e) none of these

4. High speed ethernet works on?
a) coaxial cable
b) twisted pair cable
c) optical fiber
d) any of these
e) none of these

5. An ethernet frame that is less than the IEEE 802.3 minimum length of 64 octets is called?
a) short frame
b) run frame
c) mini frame
d) man frame
e) micro frame

6. Identify the composite attributes?
a) Salary
b) Credits
c) Section_id
d) Name
e) None of the mentioned

7. The packet of information at the application layer is called?
a) Packet
b) Message
c) Segment
d) Frame
e) Byte

8. To represent hierarchical relationship between elements, Which data structure is suitable?
a) Dequeue
b) Priority
c) Tree
d) Graph
e) ARRAY

9. Which one of the following computer network is built on the top of another network?
a) prior network
b) chief network
c) prime network
d) overlay network
e) main network

10. A collection of instructions that performs a single logical function is called ?
a) transaction
b) operation
c) function
d) fork
e) All of these

11.The domain name system is maintained by?
a) distributed database system
b) a single server
c) a single computer
d) database admin
e) none of the mentioned