Which of the following is true of signals in Linux? Question 1 options: They cou

Question

Which of the following is true of signals in Linux?

Question 1 options:

They could be used for communication among processes

Processes can choose to ignore many of them

A process may only send signals to processes in the same group

All of the above

Which of the following classes of Linux threads do/does not have a time quantum associated with them?

Question 2 options:

Real-time FIFO

Real-time round robin

Timesharing.

None of the above

Two instances of the same Linux program (say cp) could share their

Question 3 options:

text segments

data segments

stack segments

all of the above

A socket is analogous to

Question 4 options:

the telephone network

a phone that is not attached to a telephone jack

a telephone jack

a television set

Special files in Linux are used to represent

Question 5 options:

the OS code

devices

i-nodes

the password file

According to the discussion in Chapter 12, perfection is reached when

Question 6 options:

nothing more can be added to the system

nothing is in the system

all system calls are implemented as library functions

Based on the discussion on “Naming,” which of the following statements is NOT true?

Question 7 options:

Directories are used to map external names onto internal names.

For a file in Unix, both its file name and its i-node number can be used internally.

How to construct and manage the names for identifying the entities, such as files, processes, and devices etc., is an important issue in operating system design and implementation.

External names are primarily designed for human beings to use while internal names are always used by the system.

Based on the discussion in Chapter 12, which of the following is considered as one of the guiding principles for the system call interface design?

Question 8 options:

If a feature or system call cannot be implemented efficiently, that functionality is not useful and programs should not be using it.

If a feature or system call might be useful in the future, it should be put in a user-level library, not in the operating system.

Both (a) and (b)

Neither (a) nor (b)

Which of the following statements is/are true?

Question 9 options:

Figure 12.8 is an example that demonstrates space-time tradeoff

Moore’s Law says that computer hardware improves by a factor of 100 every decade.

Dijkstra’s THE system was the first layered operating system.

All of the above

Based on the discussion in Chapter 12, which of the following is not one of the new system trends?

Question 10 options:

Embedded systems.

32-bit address based systems.

Hypervisor based systems.

Handheld wireless computers.

1)

They could be used for communication among processes

2)

Processes can choose to ignore many of them

3)

A process may only send signals to processes in the same group

4)

All of the above

Explanation / Answer

I am providing solution of first 4 MCQs

1.) Signals in Linux could be used for communication among processes. Processes can choose to ignore many of them and a process may only send signals to processes in the same group. Hence, option d) is correct.

2.) Real time FIFO works on the first come first serve basis and it doesn't have a time quantum associated with them. Hence, option a) is correct.

3.) Two instances of the same Linux program could share their text segments, data segments, stack segments etc. Hence, option d is correct.

4.) A socket is analogous to the telephone network. Dialing a phone no. from your phone is similar to starting a socket call. The client uses socket() function call to start the logical switch mechanism to connect the server. Hence, option a is correct.

Hope it helps, do give your valuable response.

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