Cisco CCNA mock exam questions sample test – Question 244

.With which type of service is bandwidth and latency the biggest consideration?

A. streaming video
B. telnet sessions
C. FTP transfers
D. authentication traffic


Correct Answer: A

Explanation:
Streaming video places the largest demand on both bandwidth and latency. Video traffic is real-time and benefits from dedicated bandwidth with QoS implementation to ensure quality.
Moreover, this service can tolerate very little latency.
Telnet and FTP sessions are both low bandwidth users and can tolerate a high degree of latency since the data can be reassembled when all pieces arrive, which is not possible when
data is coming in real-time, and waiting for retransmissions and reassembly is not feasible.
Authentication traffic is not sensitive to latency and does not require much bandwidth either.
Objective:
WAN Technologies
Sub-Objective:
Describe basic QoS concepts
References:
Cisco Documentation > Internetworking Technology Handbook > Voice/Data Integration Technologies