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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
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)
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
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)
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)
Answer: (d).All (a), (b), (c)