District Courts of Assam System Assistant Paper 2021 – Computer Knowledge

Guwahati High Court System Assistant Paper 2021 Computer Knowledge for District Courts of Assam

The binary number 1111011111100 in hexadecimal system is
(a) 2EEA
(b) 1EFC
(c) 2EAC
(d) 1FEC

What does the following do when we enter in command line in linux echo “I am appearing in exam”>b.txt
(a) It create an empty file b.txt only
(b) It creates no file
(c) It creates a file b.txt with the contents “echo”
(d) It creates a file b.txt with the contents “I am appearing in exam”

When we write following command in linux
chmod<space>731<space>b.txt
(a) It gives read, write and execute permission to user, group and other for the file b.txt
(b) It gives read, write and execute permission to user, write and execute permission to group and execute permission to others for the file b.txt
(c) It gives read, write and execute permission to user, write permission to group and execute permission to others for the file b.txt
(d) It gives read, write and execute permission to user, write and execute permission to group and read permission to others for the file b.txt

Which of the following are linux commands?
(a) diff, chmod, grep, ps
(b) diff, chmod, trik, ps
(c) diff, ch, grep, ps
(d) hiff, chmod, grep, ps

Which of the following is TRUE ?
(a) Hub and switch operate in the physical layer of the OSI model
(b) Hub and switch operate in the data link layer of the OSI model
(c) Hub and switch operate in the network link layer of the OSI model
(d) None of the above

Which of the following is TRUE for switch in computer networks ?
(a) Switch primarily broadcasts messages
(b) Transmission mode is full duplex only
(c) Switch is an intelligent Device
(d) None of the above

IPv4 and IPv6 addresses consists of
(a) 32 and 64 bit numbers respectively
(b) 64 and 128 bit numbers respectively
(c) 32 and 128 bit numbers respectively
(d) None of the above

The Primary key must be –
(a) Unique
(b) (a) & (c)
(c) Not Null
(d) None of the above

Database _________, which is the logical design of the database, and the database _____, which is a snapshot of the data in the database at a given instant in time.
(a) Instance, Schema
(b) Relation, Schema
(c) Relation, Domain
(d) Schema, Instance