DATA communication and network mcq quiz part -3.

1.Why IP Protocol is considered as unreliable?
A. A packet may be lost
B. Packets may arrive out of order
C. Duplicate packets may be generated
D. All of the above

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Answer is D)

2.Computer Network is
A. Collection of hardware components and computers
B. Interconnected by communication channels
C. Sharing of resources and information
D. All of the Above

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Answer is D)

3.Which of the following is not the possible ways of data exchange?
A. Simplex
B. Multiplex
C. Half-duplex
D. Full-duplex

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Answer is B)

4.A piece of icon or image on a web page associated with another webpage is called ______
a) url
b) hyperlink
c) plugin
d) extension

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Answer is b)

5. Dynamic web page ______
a) is same every time whenever it displays
b) generates on demand by a program or a request from browser
c) both is same every time whenever it displays and generates on demand by a program or a request from browser
d) is different always in a predefined order

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Answer is b)

6.A web cookie is a small piece of data that is _______
a) sent from a website and stored in user’s web browser while a user is browsing a website
b) sent from user and stored in the server while a user is browsing a website
c) sent from root server to all servers
d) sent from the root server to other root servers

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Answer is a)

7.The _________ field determines the lifetime of IPv6 datagram
a) Hop limit
b) TTL
c) Next header
d) Type of traffic

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Answer is a)

8. Which among the following features is present in IPv6 but not in IPv4?
a) Fragmentation
b) Header checksum
c) Options
d) Anycast address

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Answer is d)

9.Dual-stack approach refers to _________
a) implementing Ipv4 with 2 stacks
b) implementing Ipv6 with 2 stacks
c) node has both IPv4 and IPv6 support
d) implementing a MAC address with 2 stacks

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Answer is c)

10. Network addresses are a very important concept of ________
a) Routing
b) Mask
c) IP Addressing
d) Classless Addressing

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Answer is c)

11. In IPv4 Addresses, classful addressing is replaced with ________
a) Classless Addressing
b) Classful Addressing
c) Classful Advertising
d) Classless Advertising

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Answer is a)

12. In classless addressing, there are no classes but addresses are still granted in ______
a) IPs
b) Blocks
c) Codes
d) Sizes

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Answer is b)

13. Which of these is not applicable for IP protocol?
a) Connectionless
b) Offer reliable service
c) Offer unreliable service
d) Does not offer error reporting

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Answer is b)

14. Which of the following field in IPv4 datagram is not related to fragmentation?
a) Flags
b) Offset
c) TOS
d) Identifier

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Answer is c)

15. Which of the following is not applicable for IP?
a) Error reporting
b) Handle addressing conventions
c) Datagram format
d) Packet handling conventions

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Answer is a)

16. In a network with 25 computers, which topology would require the most
extensive cabling?
(a) Star
(b) Mesh
(c) Bus
(d) None of these

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Answer is b)

17. Dual-stack approach refers to _________
a) Implementing Ipv4 with 2 stacks
b) Implementing Ipv6 with 2 stacks
c) Node has both IPv4 and IPv6 support
d) Implementing a MAC address with 2 stacks

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Answer is c)

18. Which organization has authority over interstate and international commerce in the communications field?
a. ITU-T
b. IEEE
c. ISO
d. FCC

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Answer is d)

19. Suppose two IPv6 nodes want to interoperate using IPv6 datagrams, but they are connected to each other by intervening IPv4 routers. The best solution here is ________
a) Use dual-stack approach
b) Tunneling
c) No solution
d) Replace the system

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Answer is b)

20. The information to be communicated in a data communications system is the ________
a. Medium
b. Protocol
c. Transmission
d. Message

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Answer is d)

21. Teredo is an automatic tunneling technique. In each client the obfuscated IPv4 address is represented by bits ______
a) 96 to 127
b) 0 to 63
c) 80 to 95
d) 64 to 79

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Answer is a)

22. Frequency of failure and network recovery time after a failure are measures of the
_______ of a network.
a. Performance
b. Security
c. Reliability
d. Feasibility

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Answer is c)

23. A link local address of local addresses is used in an _______
a) Isolated router
b) Isolated mask
c) Isolated subnet
d) Isolated net

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Answer is c)

24. . A few leftmost bits in each address of IPv6 address define its category is called ________
a) Prefix type
b) Postfix type
c) Reserved type
d) Local type

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Answer is a)

25. An unauthorized user is a network _______ issue.
a. Performance
b. Reliability
c. Security
d. All of the above

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Answer is c)

26. . A television broadcast is an example of _______ transmission.
a. Half-duplex
b. Full-duplex
c. Simplex
d. Automatic

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Answer is c)

27. Mail services are available to network users through the _______ layer.
a. Data link
b. Physical
c. Application
d. Transport

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Answer is c)

28. In IPv6 addresses, addresses that start with eight 0s are called ________
a) Unicast addresses
b) Multicast addresses
c) Any cast addresses
d) Reserved addresses

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Answer is d)

29. Which statement(s) about IPv6 addresses are true?
a) Leading zeros are required
b) Two colons (::) are used to represent successive hexadecimal fields of zeros
c) Two colons (::) are used to separate fields
d) A single interface cannot have multiple IPv6 addresses of different types

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Answer is b)

30. When was IPv6 launched?
a) June 2, 2012
b) June 4, 2012
c) June 5, 2012
d) June 6, 2012

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Answer is d)