Exam

Question 1

Advantage of threads compared to forking separate processes

Answer 1

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Question 2

Strace command Linux

Answer 2

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Question 3

Kill command Linux

Answer 3

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Question 4

Explain purpose of the test_and_set of compare_and_swap processor instructions using an example

Answer 4

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Question 5

Explain deadlock using an example. Describe requirements for a deadlock to occur

Answer 5

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Question 6

Difference between hard and soft links

Answer 6

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Question 7

Purpose of translation lockaside buffer in paging, what would be impact on importance if not used.

Answer 7

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Question 8

Using a 32 bit or 64 bit virtual address as an example, describe implications of using small versus large frame/page size. What might be negative impacts of using it

Answer 8

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Question 9

What is a system call. Name and describe one

Answer 9

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Question 10

Size and pstree Linux command.l

Question 11

Difference between preemptive and non-preemptive schedueling. Describe one preemptive schedueling algorithm and use an example

Answer 11

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Question 12

What is processor affinity. Give one benefit

Question 13

Two different ways inter process communication can be achieved in Linux

Question 14

A semaphore is a type of synchronisation primative. Explain the wait() and signal() operations of semaphores. Explain how counting semaphore differs from binary semaphore

Question 15

Is this true or false. Swapping/ a backing store must be enabled for paging to work

Question 16

Using an example explain the benefit of acrylic graph directory structures