What is the primary function of a rewrite rule in Junos CoS?

To buffer packets during congestion

To modify packet header fields such as DSCP or 802.1p

To schedule packets based on priority

To drop packets that exceed a configured rate

In Junos CoS, what is the primary purpose of traffic shaping on an interface?

To re-mark packets with a different DSCP value

To prioritize packets based on their forwarding class

To control the outbound transmission rate and buffer excess packets

To drop packets that exceed a configured rate

Which effect on traffic flow is characteristic of policing but not shaping?

Traffic is re-marked to a lower priority

Packets are delayed in a buffer

How do shaping and rewrite rules work together in a Junos CoS configuration?

Shaping and rewrite rules both drop excess packets

Shaping and rewrite rules are independent and do not interact

Shaping controls the rate, while rewrite rules mark packets for downstream devices

Rewrite rules control the rate, while shaping marks packets

A network administrator is configuring CoS on a Junos router. The router has a 1 Gbps interface, but the upstream provider only allows 500 Mbps of sustained traffic. The administrator wants to ensure that the router does not send more than 500 Mbps out this interface, but also wants to avoid dropping packets during bursts. Which mechanism should be used?

Policing with a 500 Mbps rate and a burst-size limit.

A firewall filter that drops traffic exceeding 500 Mbps.

A rewrite rule that marks traffic with a lower priority.

Juniper NetworksCertified Professional, Enterprise Routing and Switching (JNCIP-ENT)

Domain 7Objective 5

Shaping and Rewrite Rules JN0-650 Practice Questions (Page 3)

Part of the Class of Service (CoS) domain, which makes up ~10% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~4–6 in this domain), expect 1–1 from this objective — we provide 15 practice questions to prepare you well beyond it. (estimate)

15questions here

3free pages

7concepts

Questions 11–15

11foundation · easy
What is the primary function of a rewrite rule in Junos CoS?
Select an answer first
12foundation · easy
In Junos CoS, what is the primary purpose of traffic shaping on an interface?
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13foundation · easy
Which effect on traffic flow is characteristic of policing but not shaping?
Select an answer first
14foundation · easy
How do shaping and rewrite rules work together in a Junos CoS configuration?
Select an answer first
15application · medium
A network administrator is configuring CoS on a Junos router. The router has a 1 Gbps interface, but the upstream provider only allows 500 Mbps of sustained traffic. The administrator wants to ensure that the router does not send more than 500 Mbps out this interface, but also wants to avoid dropping packets during bursts. Which mechanism should be used?
Select an answer first

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