131. Coaxial cable 10 base-2, used on ethenet can also be known as :
(A) Thick coaxial cable
(B) Thin coaxial cable
(C) Twisted pair cable
(D) None of the above
Answer: (B)
132. Which layer of OSI reference model is responsible for data compression ?
(A) Application layer
(B) Presentation layer
(C) Session layer
(D) Transport layer
Answer: (B)
133. The propagation speed of electromagnetic signals depends on the :
(A) Frequency of the signal
(B) Communication medium
(C) Both (A) and (B)
(D) None of the above
Answer: (C)
134. Which generation of cellular networks is completely based on packet switching technology ?
(A) 4G
(B) 3G
(C) 2G
(D) 1G
Answer: (A)
135. Which is an overlay network on the top of public networks but with most of the properties of private network?
(A) VPN
(B) Proxy
(C) DNS
(D) Radius
Answer: (A)
136. What is the semantics HTTP error status code related to Forbidden, when manipulating resources ? (A) 400
(B) 500
(C) 404
(D) 403
Answer: (D)
137. In data communication, data rate depends on :
(A) The available bandwidth
(B) The level of signal
(C) The level of noise
(D) All of the above
Answer: (D)
138. How long does downloading an uncompressed text file of 1 Mega bit over a 32 kilobites/sec modem take ?
(A) 312.5 sec
(B) 212.5 sec
(C) 350.5 sec
(D) 250.5 sec
Answer: (A)
139. In an IP packet, receiver discards the packet that received with first 8 bits as 01000010. What is the possible reason?
(A) Incorrect IP version and incorrect header length
(B) Incorrect IP version and correct header length
(C) Correct IP version and incorrect header length
(D) None of the above
Answer: (C)
140. Which mode of communication is utilized by ethernet using CSMA/CD protocol ?
(A) Full duplex
(B) Half duplex
(C) Simplex
(D) None of the above
Answer: (B)
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