PPSC Computer Science Chapter 12 Computer Networking Online Test With Answers

PPSC Computer Science Chapter 12 Computer Networking Online Test

Sr. # Questions Answers Choice
1 Which of the following is required to communicate between two computers. Communications software Protocol <div>Communication Hardware</div> All of above including access to transmission medium
2 Which of the following is an advantage to using fiber optics data transmission. Resistance to data theft Fast data transmission rate Low noise level All of above
3 Which of the following signal is not standard RS-232 -C signal VDR RTS CTS DSR
4 Which of the following does ot allow multiple uses or devices to share one communication line. Double plexer Multiple plexrr Concentrator Controller
5 Which of the following is not a transmission medium. Telephone lines Coaxial cables Modem Micro wave systems
6 Which of the following is considered a broad band communication channel. Coaxial cable Fiber optics cable Microwave circuits All of above
7 The interactive transmission of data with in a time sharing system may be best suited to. Simplex lines Half duplex lines full duplex lines Biflex lines
8 What is the number of separate protocol layers at the steric interface gateway specified by the X.25 standard. 2 3 4 6
9 Which of the following might be used by a company to satisfy its growing communications needs. Front and processor Multiplexer Controller All of the above
10 Which of the following communication modes support two way traffic but in only one direction at a time. Simplex Half duplex Three quarters duplex All of the above
11 The X.25 standard specifies a Technique for start stop data Technique for dial access DTE/DCE interface None
12 Layer one of the OSI model is Physical layer Link layer Transport layer Network layer
13 How many OSI layers are covered in the X-25 standart. Two Three Seven Six
14 The process of converting analog signals into digital signals so they can be processed by a receiving computer is referred to as. Modulation Demodulation Synchronizing Digitising
15 Which of the following performs modulation and demodulation? Fiber optics Satellite Coaxial cable Modern
16 In OSI network architecture the routing is performed by Network layer Data link layer Transport layer Session layer
17 In OSI network architecture the dialogue control and toke management are responsibility of Session layer Network layer Transport layer None
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