💻 Computing Solved MCQs with Answers

Practice 1954 approved 💻 Computing questions with verified answers from the 💾 Computer Science subject for Pakistan exams.

1954 solved MCQs

What command is used with vi editor to save file and remain in the editing mode?Answer: :w What command is used with vi editor to move back to the beginning of a word?Answer: b What command is used with vi editor to search a pattern in the forward direction?Answer: / What command is used to add printing jobs to the queue?Answer: lpr What protocol(s) is(are) allowed a user to retrieve her/his mail from the mail server to her/his mail reader?Answer: POP3 What project is currently developing X server support?Answer: XFree86 Project, Inc. What X-based tool is available for configuring the X Window system?Answer: XF86Setup Which of the following server is used with the BIND package?Answer: named What port does squid listen, by default?Answer: 3128 Which of the following command is used to access an SMB share on a Linux system?Answer: smbclient Which of the following command is used to see the services running in NFS server?Answer: rpcinfo What does GNU stand for?Answer: GNU's not Unix What shell's wild-card is used to match any number of characters including none?Answer: * What command is used to list contents of directories?Answer: ls What command is used with vi editor to append text at end of line?Answer: A What command is used to copy directory structures in and out?Answer: cpio In OSI network architecture, the dialogue control and token management are responsible ofAnswer: session layer Layer one of the OSI model isAnswer: physical layer What layer of OSI determines the interface of the system with the user?Answer: Application What command is used to remove jobs from the print queue?Answer: lprm How can you navigate around virtual consoles?Answer: Alt+Function Key Which of the following NIS clients, finds and stores information about an NIS domain and server?Answer: ypbind An OR gate can be imagined asAnswer: switches connected in parallel Address 200H contains the byte 3FH. What is the decimal equivalent of 3FHAnswer: 63 The functional difference between SR flip-flop and JK flip-flop is thatAnswer: JK flip-flop accepts both inputs 1 The inverter OR gate and AND gate are called decision-making elements because they can recognize some input _____ while disregarding others. A gate recognizes a word when its output is _____Answer: words, high A positive AND gate is also a negativeAnswer: OR gate In which code the successive code characters differ in only one bit position?Answer: gray code ASCII and EBCDIC differ inAnswer: their collecting sequences A p- channel enhancement type MOSFET performs much the same function as a PNP transistor, except thatAnswer: it is controlled by voltage rather than by current, so that it requires very little current at the control terminal