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321. If a file consisting of 50,000 characters takes 40 seconds to send, then the data rate is ........................
a. 1 kbps
b. 1.25 kbps
c. 2 kbps
d. 10 kbps
Discuss
Answer: (d).10 kbps
322. Match the following:

List - I
(a) Data link layer
(b) Network layer
(c) Transport layer
(d) Presentation layer

List - II
(i) Encryption
(ii) Connection control
(iii) Routing
(iv) Framing

Code :
(a) (b) (c) (d)
a. (iv) (iii) (i) (ii)
b. (iii) (iv) (ii) (i)
c. (iv) (ii) (iii) (i)
d. (iv) (iii) (ii) (i)
Discuss
Answer: (d).(iv) (iii) (ii) (i)
323. The address of a class B host is to be split into subnets with a 6 - bit subnet number. What is the maximum number of subnets and maximum number of hosts in each subnet?
a. 62 subnets and 1022 hosts
b. 64 subnets and 1024 hosts
c. 62 subnets and 254 hosts
d. 64 subnets and 256 hosts
Discuss
Answer: (a).62 subnets and 1022 hosts
324. Which of the following statements are true?

(a) The fragmentation fields in the base header section of IPv4 have moved to the fragmentation extension header in IPv6.
(b) The authentication extension header is new in IPv6.
(c) The record route option is not implemented in IPv6.
a. (a) and (b) Only
b. (b) and (c) Only
c. (a) and (c) Only
d. (a), (b) and (c)
Discuss
Answer: (d).(a), (b) and (c)
325. Which of the following routing technique / techniques is / are used in distributed systems?

(a) Fixed Routing
(b) Virtual Routing
(c) Dynamic Routing
a. (a) only
b. (a) and (b) only
c. (c) only
d. All (a), (b), (c)
Discuss
Answer: (d).All (a), (b), (c)

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