Home » Cisco » 300-070 » Which statement about the DiffServ QoS deployment architecture is true?
Which statement about the DiffServ QoS deployment architecture is true?
A. DiffServ does not differentiate traffic types and thus cannot provide service levels.
B. DiffServ architecture differentiates and classifies various types of traffic and provides several levels of service based on that classification.
C. Resource Reservation Protocol is an example of a DiffServ mechanism where each router on the path for packet transmission is informed of the upcoming packet stream.
D. DiffServ architecture provides QoS by assuring treatment for a specific traffic flow.
Correct Answer: C
Explanation/Reference:
Reference: https://books.google.com.pk/books?id=0DOXAwAAQBAJ&pg=PA33&lpg=PA33&dq=Resource+Reservation+Protocol+is+an+example+of+a+DiffServ+mechanism+where+each+router+on+the+path+for+packet+transmission+is+informed+of+the+upcoming+packet+stream&source=bl&ots=YmvtFVqaVn&sig=UCH22tyhjKx_y_G0_yqO8epvRo&hl=en&sa=X&ved=0ahUKEwinoau7mdfMAhXJgI8KHdy0DZMQ6AEIGTAA#v=onepage&q=Resource%20Reservation%20Protocol%20is%20an%20example%20of%20a%20DiffServ%20mechanism%20where%20each%20router%20on%20the%20path%20for%20packet%20transmission%20is%20informed%20of%20the%20upcoming%20packet%20stream&f=false
Answer B:
The DiffServ architecture, differentiates/classifies various types of traffic and provides several levels of service based on that classification. Unlike IntServ, DiffServ labels packets with a particular priority marking that can be referenced by other network devices/applications and hence classified in various traffic classes to be treated accordingly.
B correct answer.
B
I agree, that answer is B.
Answer C is referring to Intserv
B