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MCQ

In which OSI layer encryption and decryption happens?

Application

Presentation

Transport

Data Link

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What are the parts of network structure?

Workstation

Gateway

Laptop

All of the mentioned

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In distributed systems, what will the transaction coordinator do?

starts the execution of transaction

breaks the transaction into number of sub transactions

coordinates the termination of the transaction

all of the mentioned

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MCQ

If a process is executing in its critical section ____________

any other process can also execute in its critical section

no other process can execute in its critical section

one more process can execute in its critical section

none of the mentioned

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Which of the following is an application layer service?

Mail service

File transfer

Remote access

All of the mentioned

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What are the characteristics of tightly coupled system? i) Same clock, usually shared memory ii) Communication is via this shared memory iii) Multiprocessors iv) Different clock

i, ii and ii

ii and iii

i, iii and iv

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Types

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Input Output Systems

Networking

Distributed Operating System

Protection and Security

Unix

Linux

MS Windows

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