Q.1 Hardware that calculates CRC(Cyclic Redundancy Check) uses: ?
(A) Shift register
(B) Xor unit
(C) Both (A) & (B)
(D) Instruction register
Ans: B Hardware that calculates CRC uses shift register and Xor unit.
Q.2 In TCP protocol header “checksum” is of___________ ?
(A) 8 bits
(B) 16 bits
(C) 32 bits
(D) 64 bis
Ans: B In TCP protocol header checksum is of 16 bits.
Q.3 In IP addressing scheme, class used for multicasting is: ?
(A) Class A
(B) Class B
(C) Class C
(D) Class D
Ans: D In IP addressing scheme, class used for multicasting is class D.
Q.4 CIDR stands for ?
(A) Classified Internet Domain Routing
(B) Classless Inter Domain Routing
(C) Classless Internet Domain Routing
(D) Classified Inter Domain Routing
Ans: B CIDR stands for Classless Inter Domain Routing.
Q.5 The total number of class of IP address are ?
(A) 3.
(B) 4.
(C) 5.
(D) 9.
Ans: C The total number of class of IP addresses are 5.
Q.6 Parent class of all Java classes is ?
(A) java.lang.system
(B) java.lang.object
(C) java.lang.class
(D) java.lang.reflect.object
Ans: B Parent class of all Java classes is java.lang.object.
Q.7 Exceptions of type error inn JAVA are handled by ?
(A) User program
(B) Java run time environment
(C) Operating system kerne
(D) Interrupt
Ans: B Exceptions of type error in JAVA are handled by JAVA run time environment.
Q.8 Error detecting method that can detect more errors without increasing additional information in each packet is ?
(A) checksum
(B) even parity mechanism
(C) CRC
(D) odd parity mechanism.
Ans: C Error detecting method that can detect more errors without increasing additional information in each packet is CRC.
Q.9 A Network uses a star topology if ?
(A) Computers are arranged in a closed loop.
(B) All computers attach to a central point.
(C) All computers attach to a single long cable.
(D) Computers attach to multiple hierarchical cables.
Ans: B A Network uses a star topology if all computers attach to a central point.
Q.10 MTU is specified by ?
(A) IP Datagram size
(B) Hardware technology
(C) TCP Segment size
(D) None of the above.
Ans: B MTU is specified by hardware technology.
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