Kerala PSC Previous Years Question Paper & Answer
Page:8
Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'HSST COMPUTER SCIENCE KHSE' And exam conducted in the year 2018. And Question paper code was '016/2018'. Medium of question paper was in Malayalam or English . Booklet Alphacode was 'A'. Answer keys are given at the bottom, but we suggest you to try answering the questions yourself and compare the key along wih to check your performance. Because we would like you to do and practice by yourself.
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Eight channels each with a 100-kHz bandwidth are to be multiplexed together. What is the
minimum bandwidth of the link if there is a need for a guard band of 10 kHz between
channels to prevent interference ?
(५) 540 عتما 1020 © عتما 870 )8( عتما (D) 1080 kHz
The digital multiplexing technique for combining several low-rate channels into high-rate
गालः
) 4 (B) FDM (ಲ 4 (D) none of these
RG-59 category cables are used for :
(മ) Telephone (B) LAN
(ಲ) Cable TV networks (D) None of these
The bit oriented protocol for communication over point to point and multipoint links is :
(ಹ) HDLC (B) Stop and wait protocol
€) एणः (D) PAP
The service not provided by PPP is :
(ಹ) network address configuration (8) authentication
(ಲ) flow control (D) none of these
Encryption 15 done at :
(ಹಿ) Presentation Layer (B) Application Layer
(~) Session Layer (D) Transport Layer
One channel carries all transmissions simultaneously in :
(ಹ) TDMA (9) CDMA ممه 9( ا (D) PDMA
The IEEE standard for Wifi is :
(ಹ) 802.4 (B 8021 © 8022 (D) 80211
An example for cell switched network is :
(A) SONET (B) ATM (ಲ பா (D) None of these
GSM is a digital cellular phone system using :
(A) TDMA and packet switching (B) CDMA and packet switching
© TDMA and FDMA (D) FDMA and CDMA
016/2018 8 A
