Q1. Which of the following statements is true for a piconet?
(a) It works on TCP/IP
(b) It is small network that connects computers and network device through cables
(c) It is an adhoc network
(d) It works on Bluetooth technology
(e) Option (c) and (d)
Q2. Which communication mode allows both the sender and the receiver to transmit data at the same time over a single communication channel?
(a) Simplex mode
(b) Half-duplex mode
(c) Full-duplex mode
(d) Semi-duplex mode
(e) None of these
Q3. Walkie-talkie is an example of which of the following?
(a) simplex communication
(b) half-duplex communication
(c) full-duplex communication
(d) semi-duplex communication
(e) None of these
Q4. Which of the following committees administers and provides long-range technical direction for Internet development?
(a) IBSF
(b) IAB
(c) ARPA
(d) ISO
(e) ITU-T
Q5. In which types of network are all the computers considered equal?
(a) Peer-to-peer
(b) Client/server
(c) Backbone
(d) Hybrid
(e) Hierarchy
Q6. Personal computers can be connected together to form a _________.
(a) Server
(b) Super computer
(c) Enterprise
(d) Network
(e) None of these
Q7. Which of the following is an advantage of a LAN?
(a) Sharing peripherals
(b) Backing up your data
(c) Saving all your data
(d) Accessing the web
(e) Automatic printing of data
Q8. Software that gathers confidential information of a person without his or her permission and sends that information to another person is called ________.
(a) antivirus
(b) spyware
(c) spam
(d) Trojan horse
(e) adware
Q9. Which of the following software programs gets activated after a pre-defined event occurs?
(a) Malware
(b) Spyware
(c) Logic Bomb
(d) Adware
(e) Trojan Horse
Q10. On which of the following models does the working of Bluetooth devices depend? (a) Client/server
(b) Peer-to-peer
(c) Master/slave
(d) Analog/digital
(e) None of these
Q11. How many bits are equivalent to one nibble?
(a) 4 bits
(b) 6 bits
(c) 8 bits
(d) 10 bits
(e) 2 bits
Q12. There are four major types of keyboards that are used worldwide on the basis of key arrangements. Which one of the following does not belong to the category of keyboards?
(a) QWERTY
(b) AZERTY
(c) QWERTZ
(d) HCESAR
(e) AZERTZ
Q13. Which of the following technologies is used in answer sheets to check them electronically?
(a) MICR
(b) OMR
(c) OCR
(d) Bar code
(e) All of these
Q14. What is Windows Vista?
(a) Processor
(b) Operating System
(c) Input device
(d) Memory
(e) None of these
Q15. What type of devices is a computer monitor?
(a) Software
(b) Processing
(c) Storage
(d) Input
(e) Output
Solutions :
S1. Ans.(e)
Sol. Piconet is an adhoc network that works on the Bluetooth technology and connects up to eight devices. It is also called personal area network (PAN). A scatternet is a type of adhoc computer network consisting of two or morepiconets.
S2. Ans.(c)
Sol. In the simplex mode, communication is always unidirectional, for example television. In the half-duplex mode, communication is bidirectional but one at a time, which means only one of the parties can send data at a time. Walkie-talkie is an example of half duplex communication. In the full-duplex mode, communication is bidirectional, which means both the parties can transmit data simultaneously. Telephone is an example of full-duplex communication. The semi-duplex mode is not and type of communication mode.
S3. Ans.(b)
Sol. In the case of walkie-talkie, the person at one end sends signals, while the other on the receiving end receives these signals. The person at the receiving end cannot communicate until the person at the first end stops.
S4. Ans.(b)
Sol. Internet Architecture Board (IAB) administers and provides long-range technical direction for Internet development.
S5. Ans.(a)
Sol. The peer-to-peer network is a type of network where each computer is connected to the other to share resources without requiring a separate server system. In this network, computers can be connected via an ad-hoc connection.
S6. Ans.(d)
Sol. Personal computers are connected together through a LAN; this arrangement of computers forms a network.
S7. Ans.(a)
Sol. By setting up a LAN, users can share devices and files among themselves. For example, a printer installed on a LAN can be used for printing by more than one person. Similarly, instead of transferring files via a pen drive or any other form of removable storage-device, users can share files in shared folders or the central location on the LAN.
S8. Ans.(b)
Sol. Spyware is a type of malicious software installed on a user’s computer to monitor and gather information about his or her activities on that computer. The information is sent to the creator of the spyware.
S9. Ans.(c)
Sol. Logic bombs are programs or code snippets that are executed when a pre-defined event occurs. They are kept secretly into the code of existing software, where they lie inactive till a pre-defined event occurs.
S10. Ans.(c)
Sol. The working of Bluetooth devices is based on a master/slave model. This model contains 266 devices out of which one is a master device and 255 and slave devices. Any device can be master and the master device can select up to seven slave devices and communicate with them simultaneously.
S11. Ans.(a)
Sol. One nibble is equivalent to 4 bits. It is also known as half byte.
S12. Ans.(e)
Sol. QWERTY, AZERTY, QWERTZ and HCESAR are the four different types of keyboards that are used worldwide.
S13. Ans.(b)
Sol. OMR stands for Optical Mark Recognition. This technology is used to read the marked data on documents. It is widely used in examinations to check the marked answers.
S14. Ans.(b)
Sol. Windows Vista is an operating system, designed and marketed by Microsoft Inc.
S15. Ans.(e)
Sol. A computer monitor displays the processed input as the output, such as information, pictures, and videos. Therefore, a monitor is called an output device.
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