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Chapter:

40+ Unit 4 Solved MCQs

in Linux Programming

These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Master of Computer Applications (MCA) , Programming Languages .

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Chapter: Unit 4
1.

FIFO Stands For :

A. Figure in Figure Out
B. First in First Out
C. File input File Output
D. None
Answer» B. First in First Out
discuss
2.

The set of possible names for a given type of IPC is called its

A. Process
B. Name Space
C. Connect
D. Communication
Answer» B. Name Space
discuss
3.

Signals can be sent

A. By process itself
B. By one process to another process
C. By the Kernel to a process
D. By (a),(b) and (c)
Answer» D. By (a),(b) and (c)
discuss
4.

Similar to read and write system calls

A. Send
B. Recv
C. (a) and (b) both
D. None
Answer» C. (a) and (b) both
discuss
5.

NetBIOS is

A. Session Service
B. Datagram service
C. General Commands
D. None
Answer» A. Session Service
discuss
6.

UDP stands for

A. User datagram Protocol
B. Uninterrupted data part
C. Uniform data provider
D. None
Answer» A. User datagram Protocol
discuss
7.

TCP stands for

A. Transmission Control protocol
B. Transfer Control protocol
C. Termination control protocol
D. None
Answer» A. Transmission Control protocol
discuss
8.

How to identify a communication?

A. Source IP Address
B. Source Port Number
C. Destination IP Address
D. All the above
Answer» D. All the above
discuss
9.

The physical layer of a network

A. constructs packets of data and sends them across the network
B. controls error detection and correction
C. defines the electrical characteristics of signals passed between the computer and communication devices
D. All of the above
Answer» C. defines the electrical characteristics of signals passed between the computer and communication devices
discuss
10.

What TCP/IP protocol is used for remote terminal connection service?

A. UDP
B. RARP
C. FTP
D. TELENET
Answer» D. TELENET
discuss
11.

How many networks and nodes per network, are allowed by the Class B network?

A. 127 networks and 16,777,216 nodes per network
B. 16,384 networks and 65,534 nodes per network
C. 2,097,152 networks and 254 nodes per network
D. All of the above
Answer» B. 16,384 networks and 65,534 nodes per network
discuss
12.

What service is used to translate domain names to IP addresses?

A. NFS
B. SMB
C. NIS
D. DNS
Answer» D. DNS
discuss
13.

What TCP/IP protocol is used for file transfer with minimal capability and minimal overhead?

A. TELNET
B. TFTP
C. FTP
D. RARP
Answer» B. TFTP
discuss
14.

What TCP/IP protocol is used for transferring electronic mail messages from one machine to another?

A. FTP
B. SNMP
C. SMTP
D. RPC
Answer» C. SMTP
discuss
15.

What can he used to set up a firewall on a Linux system?

A. netstat
B. route
C. trace
D. ipchains
Answer» D. ipchains
discuss
16.

What service is not monitored by inetd ?

A. SSH
B. time
C. ntalk
D. finger
Answer» A. SSH
discuss
17.

What command do you use to add routes to a Linux router?

A. addroute
B. route
C. netstat
D. net
Answer» B. route
discuss
18.

Which of the following is not a communication command?

A. grep
B. mail
C. mesg
D. Write
Answer» A. grep
discuss
19.

What protocol(s) is (are) allowed a user to retrieve her/his mail from the mail server to her/his mail reader?

A. POP3
B. FTP
C. MAP
D. All of the above
Answer» A. POP3
discuss
20.

The 32-bit internet address 10000000 00001010 00000010 00011110 will be written in dotted decimal notation as

A. 128.10.2.30
B. 210.20.2.64
C. 164.100.9.61
D. 148.20.2.30
Answer» A. 128.10.2.30
discuss
21.

Which class network is used for a collection of a small number of networks with a large number of nodes?

A. Class A
B. Class B
C. Class C
D. All of the above
Answer» A. Class A
discuss
22.

What type of addressing format is used by Class A network?

A. Net.Net.Net.Node
B. Net.Net.Node.Node
C. Net.Node.Net.Node
D. Net.Node.Node.Node
Answer» D. Net.Node.Node.Node
discuss
23.

How many class A, B and C network IDs can exist?

A. 128
B. 126
C. 16,382
D. 2,113,658
Answer» D. 2,113,658
discuss
24.

Communication using UDP is usually____________.

A. connectionless,iterative
B. connectionless,concurrent
C. connection-oriented,iterative
D. connection-oriented,concurrent
Answer» A. connectionless,iterative
discuss
25.

Communication using TCP is usually____________.

A. connectionless,iterative
B. connectionless,concurrent
C. connection-oriented,iterative
D. connection-oriented,concurrent
Answer» D. connection-oriented,concurrent
discuss
26.

SOCK_STREAM sockets are used by ______ processes.

A. UDP
B. TCP
C. SCTP
D. None of these
Answer» B. TCP
discuss
27.

SOCK_DGRAM sockets are used by ______ processes.

A. UDP
B. TCP
C. SCTP
D. None of these
Answer» A. UDP
discuss
28.

An interface is a set of ___________ designed to facilitate interaction between two entities

A. programs
B. instructions
C. rules
D. none of these
Answer» B. instructions
discuss
29.

How many types of sockets are there?

A. 2
B. 3
C. 4
D. 5
Answer» C. 4
discuss
30.

If a signal is received by a process, when will it be processed?

A. It is processed immediately
B. It is processed when process is switching to kernel mode
C. It is processed in the next time slice given to the process
D. all
Answer» B. It is processed when process is switching to kernel mode
discuss
31.

Which signal is generated when we press control-C?

A. SIGINT
B. SIGTERM
C. SIGKILL
D. SIGSEGV
Answer» A. SIGINT
discuss
32.

Which signal is generated when we press ctrl-Z?

A. SIGKILL
B. SIGSTOP
C. SIGABRT
D. SIGINT
Answer» D. SIGINT
discuss
33.

Which signal is sent when the Child process terminates?

A. SIGINIT
B. SIGKILL
C. SIGSTOP
D. SIGCHLD
Answer» B. SIGKILL
discuss
34.

Which of the following signal cannot be handled or ignored?

A. SIGINT
B. SIGCHLD
C. SIGKILL
D. SIGALRM
Answer» C. SIGKILL
discuss
35.

Another signal that cannot be caught is:

A. SIGPIPE
B. SIGHUP
C. SIGSTOP
D. SIGUSR1
Answer» C. SIGSTOP
discuss
36.

When real interval timer expires which signal is generated?

A. SIGINT
B. SIGCHLD
C. SIGKILL
D. SIGALRM
Answer» D. SIGALRM
discuss
37.

Signals are handled using which system call?

A. kill
B. signal
C. both
D. none
Answer» B. signal
discuss
38.

Default action of SIGSEGV is

A. Terminate
B. Core dump
C. Stop
D. Cont
Answer» B. Core dump
discuss
39.

The kill system call is used to

A. Send shutdown messages to all by super-user
B. Send a signal to a process
C. Kill processes
D. Stop the processes
Answer» B. Send a signal to a process
discuss
40.

Which is true regarding pipes?

A. half duplex
B. full duplex
C. message boundaries are preserved
D. Unordered data
Answer» A. half duplex
discuss
41.

The persistancy of a FIFO is

A. process
B. kernel
C. file system
D. none
Answer» C. file system
discuss
42.

Advantage of FIFO over pipe is

A. related processes can communicate
B. unrelated processes can communicate
C. none
D. all
Answer» B. unrelated processes can communicate
discuss
43.

What mkfifo() creats?

A. pipe
B. unnamed pipe
C. named pipe
D. msg queue
Answer» C. named pipe
discuss
44.

System V IPC common attributes are

A. key
B. id
C. owner
D. all the above
Answer» D. all the above
discuss
45.

Which one of the following is not system V IPC ?

A. Shared Memory
B. Semaphores
C. FIFO
D. Message Queues
Answer» C. FIFO
discuss
46.

Which system call is used to create Sys V message Queue ?

A. msgget
B. shemget
C. semget
D. msgctl
Answer» A. msgget
discuss
47.

Which is not the correct option for removing a message queue ?

A. ipcrm -Q
B. ipcrm -q
C. ipcrm -m
D. None
Answer» C. ipcrm -m
discuss
48.

Message queues are created in

A. userspace
B. kernelspace
C. both
D. none
Answer» B. kernelspace
discuss

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