Exam 2 CSCE 3600 Questions with Correct Answers Graded A+
A socket system call returns _______for the created socket
A) A file descriptor
B) A process ID
C) A thread ID
D) A memory address - Answers A) A file descriptor
A pthread_create function returns_______ for the newly created thread.
A) A file descriptor
B) A process ID
C) A thread ID
D) A memory address - Answers C) A thread ID
A fork() function returns _______ for the newly created process.
A) A file descriptor
B) A process ID
C) A thread ID
D) 0 - Answers D) 0
Which of the following statements is true regarding processes and their requirements?
A) A process is the same as an executing program.
B) A process doesn't require any resources to accomplishits task.
C) A process requires only CPU time to accomplish its task.
,D) A process needs certain resources, including CPU time,memory, files, and I/O devices, to accomplish
its task. - Answers D) A process needs certain resources, including CPU time,memory, files, and I/O
devices, to accomplish its task.
True or False
If there are no connection requests and the socket is not non-blocking, accept () function blocks till a
connection requests comes in. - Answers True
Which of the following statements is true about long-term scheduler?
A) It is responsible for context switching between processes.
B) It is responsible for selecting processes from memory for execution.
C) It determines which programs are selected for execution from a queue of new processes.
D) It is responsible for allocating memory to processes. - Answers C) It determines which programs are
selected for execution from a queue of new processes.
Which system call associates an address with a socket?
A) bind()
B) connect()
C) listen()
D) accept() - Answers A) bind()
In a client-server networking application, which process typically creates a new child process to handle
each incoming client connection?
A) The client process
B) The server process
C) Both the client and server processes
D) Neither the client nor server process - Answers B) The server process
Which of the following pieces of information is shared among all threads in a single process?
, (A) Heap
(B) Stack
(C) Program Counter (PC)
(D) None of the above. - Answers (A) Heap
A process control block should contain ________ .
(A) the process state
(B) a list of open files
(C) the contents of CPU registers
(D) all of the above - Answers D) all of the above
Context switching between processes is carried out by the________.
(A) job (long-term) scheduler
(B) CPU (short-term) scheduler
(C) interrupt handler
(D) thread manager - Answers (B) CPU (short-term) scheduler
On a typical implementation of POSIX, using read() to read one byte from a file descriptor with a call
like:read(fd, buffer, 1);where the file descriptor is opened to a file on a hard disk will:
A) cause the OS to request exactly one byte from the disk, then store thatbyte in the application's buffer
B) cause read to return an error because the hard disk can only read data inlarger blocks
C) cause the OS to request a block of data (larger than one byte) from disk and store it in the OS's
memory, then copy one byte of that into the application's buffer
D) cause the OS to request a block of data (larger than one byte) from disk,then copy the entire block
into the application's buffer - Answers C) cause the OS to request a block of data (larger than one byte)
from disk and store it in the OS's memory, then copy one byte of that into the application's buffer
A socket system call returns _______for the created socket
A) A file descriptor
B) A process ID
C) A thread ID
D) A memory address - Answers A) A file descriptor
A pthread_create function returns_______ for the newly created thread.
A) A file descriptor
B) A process ID
C) A thread ID
D) A memory address - Answers C) A thread ID
A fork() function returns _______ for the newly created process.
A) A file descriptor
B) A process ID
C) A thread ID
D) 0 - Answers D) 0
Which of the following statements is true regarding processes and their requirements?
A) A process is the same as an executing program.
B) A process doesn't require any resources to accomplishits task.
C) A process requires only CPU time to accomplish its task.
,D) A process needs certain resources, including CPU time,memory, files, and I/O devices, to accomplish
its task. - Answers D) A process needs certain resources, including CPU time,memory, files, and I/O
devices, to accomplish its task.
True or False
If there are no connection requests and the socket is not non-blocking, accept () function blocks till a
connection requests comes in. - Answers True
Which of the following statements is true about long-term scheduler?
A) It is responsible for context switching between processes.
B) It is responsible for selecting processes from memory for execution.
C) It determines which programs are selected for execution from a queue of new processes.
D) It is responsible for allocating memory to processes. - Answers C) It determines which programs are
selected for execution from a queue of new processes.
Which system call associates an address with a socket?
A) bind()
B) connect()
C) listen()
D) accept() - Answers A) bind()
In a client-server networking application, which process typically creates a new child process to handle
each incoming client connection?
A) The client process
B) The server process
C) Both the client and server processes
D) Neither the client nor server process - Answers B) The server process
Which of the following pieces of information is shared among all threads in a single process?
, (A) Heap
(B) Stack
(C) Program Counter (PC)
(D) None of the above. - Answers (A) Heap
A process control block should contain ________ .
(A) the process state
(B) a list of open files
(C) the contents of CPU registers
(D) all of the above - Answers D) all of the above
Context switching between processes is carried out by the________.
(A) job (long-term) scheduler
(B) CPU (short-term) scheduler
(C) interrupt handler
(D) thread manager - Answers (B) CPU (short-term) scheduler
On a typical implementation of POSIX, using read() to read one byte from a file descriptor with a call
like:read(fd, buffer, 1);where the file descriptor is opened to a file on a hard disk will:
A) cause the OS to request exactly one byte from the disk, then store thatbyte in the application's buffer
B) cause read to return an error because the hard disk can only read data inlarger blocks
C) cause the OS to request a block of data (larger than one byte) from disk and store it in the OS's
memory, then copy one byte of that into the application's buffer
D) cause the OS to request a block of data (larger than one byte) from disk,then copy the entire block
into the application's buffer - Answers C) cause the OS to request a block of data (larger than one byte)
from disk and store it in the OS's memory, then copy one byte of that into the application's buffer
