💻 Computing Solved MCQs with Answers

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

1954 solved MCQs

The slowest transmission speeds are those ofAnswer: twisted-pair wire A noiseless 3 KHz Channel transmits bits with binary level signals. What is the maximum data rate?Answer: 6 Kbps Carrier isAnswer: a continuous frequency capable of being modulated or impressed with a second signal What can greatly reduce TCP/IP configuration problems?Answer: DHCP Server In CRC there is no error if the remainder at the receiver is _____.Answer: zero Which of the following statements is correct for the use of packet switching?Answer: All of the above A front-end processor isAnswer: a minicomputer that relieves main-frame computers at a computer centre of communications control functions What is the port number for NNTP?Answer: 119 Eight stations are competing for the use of a shared channel using the 'Adaptive tree Walk Protocol'. If the stations 7 and 8 are suddenly become ready at once, how many bit slots are needed to resolve the contention?Answer: 7 slots Usually, it takes 10-bits to represent one character. How many characters can be transmitted at a speed of 1200 BPS?Answer: 120 To connect a computer with a device in the same room, you might be likely to useAnswer: a coaxial cable Internet-like networks within an enterprise.Answer: Intranets How many bits internet address is assigned to each host on a TCP/IP internet which is used in all communications with the host?Answer: 32 - bits With an IP address of 100, you currently have 80 subnets. What subnet mask should you use to maximize the number of available hosts?Answer: 252 Which of the following types of channels moves data relatively slowly?Answer: narrowband channel Which of the following is required to communicate between two computers?Answer: All of the above Which of the following does not allow multiple users or devices to share one communications line?Answer: doubleplexer The geostationary satellite used for communication systemsAnswer: All of the above Telecommunication networks frequently interconnect an organization with its customers and suppliers. Select the best fit for answer:Answer: Inter organizational networks The packets switching concept was first proposedAnswer: in the early 1960s for military communication systems, mainly to handle speech The _____ houses the switches in token ring.Answer: MAU What device separates a single network into two segments but lets the two segments appear as one to higher protocols?Answer: Bridge In an intrinsic semiconductor, the number of free electronsAnswer: Equals the number of holes A device that converts mechanical into electrical energy is?Answer: generator Which one of the following kinds of materials has the lowest permeability?Answer: A diamagnetic material The total impedance of a parallel RLC circuit:Answer: is maximum at the resonant frequency The rise time of a pulse waveform is the time required for the voltage to rise:Answer: from 10% of the peak value to 90% of the peak value For a pure capacitor:Answer: ac current leads the voltage by 90 degree The component that forms the electrical connection between the rotating coil of wire in a motor and the external source of electrical energy is called the:Answer: commutator In a pure inductor:Answer: ac current lags the voltage by 90 degree