Answer:
+ best effort: standard Web browsing traffic
+ priority queue: VoIP traffic
+ policing: video traffic
+ shaping: database synchronization traffic
Explanation
+ best effort: standard Web browsing traffic (Regular Web traffic is considered a low priority,
TCP or UDP)
+ priority queue: VoIP traffic (VoIP is time sensitive and it uses UDP to speed up the delivery of
packets. But it should have priority to guarantee quality)
+ policing: video traffic (Video stream is time sensitive and it uses UDP to speed up the delivery
of packets. But the bandwidth for video is much higher than voice so we can drop some packets
if there is not enough bandwidth. The quality is still acceptable for most viewers)
+ shaping: database synchronization traffic (DB communications use TCP to warranties the
delivery of the packets, queuing the packets don’t affect the transmission)
Question 100
What is a function performed by a web server?
A. provide an application that is transmitted over HTTP
B. send and retrieve email from client devices
C. securely store files for FTP access
D. authenticate and authorize a user’s identity
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