Which if the following is/are the levels of implementation of data structure
1. Abstract level
2. Application level
3. Implementation level
4. All of the above
Answer: Option D.
What protocol does PPP use to identify the Network layer protocol?
1. NCP
2. ISDN
3. HDLC
4. LCP
Answer: Option A.

Which of the following is not the part of ADT description?
1. Data
2. Operations
3. Both of the above
4. None of the above
Answer: Option D.
What does a VLAN do?
1. Acts as the fastest port to all servers.
2. Provides multiple collision domains on one switch port.
3. Breaks up broadcast domains in a layer 2 switch internet work.
4. Provides multiple broadcast domains within a single collision domain
Answer: Option C.
Which one of the following is not a real time operating system?
1. Vx Works
2. Windows CE
3. RT Linux
4. Palm OS
Answer: Option D.
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Which data structure allows deleting data elements from and inserting at rear?
1. Stacks
2. Queues
3. Dequeues
4. Binary search tree
Answer: Option B.

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