Juniper JN0-648 問題集

質問 1：
Exhibit.

Your IS-IS adjacency is not established as shown in the exhibit. What is the problem?
A. There is an MTU mismatch
B. There is an area mismatch
C. There is an invalid IPv4 router ID
D. There is an invalid IPv6 router ID
正解：B

質問 2：
Click the Exhibit button.

Referring to the exhibit, which statement is true?
A. The current device is authenticated using MAC RADIUS
B. Only 802. 1X authentication will be used for devices connecting to ge-0/0/15
C. The current device was allowed after authentication attempts to the RADIUS server failed
D. Additional users will automatically be allowed to connect to ge-0/0/15
正解：C

質問 3：
You have configured CoS on a Junos device. A packet is classified as best effort by a behavior aggregate (BA) classifier, and as expedited forwarding by a multifield (MF) classifier.
Which statement is true in this scenario?
A. The packet will be placed in a queue associated with the MF classifier.
B. The packet will be placed into the queue that has the most bandwidth assigned to it.
C. The packet will be placed into the queue which is least congested.
D. The packet will be placed in a queue associated with the BA classifier.
正解：A
解説: (Topexam メンバーにのみ表示されます)

質問 4：
Packets enter a Juniper device and are classified as best effort. During the processing of the packet, the classification of the packets is changed to expedited forwarding by a multi-field classifier. The device is using the default CoS policies Which statement is true in this scenario?
A. The packet is forwarded according to the original packet classification, and the DSCP bits are rewritten to the new class.
B. The packet is forwarded according to the new packet classification, and the DSCP bits do not change.
C. The packet is forwarded according to the new packet classification, and the DSCP bits are rewritten to the new class.
D. The packet is forwarded according to the original packet classification, and the DSCP bits do not change.
正解：B

質問 5：
In IS-IS advertising POUs with the overload bit has which effect?
A. The local device's POUs are marked with a metric of 65535
B. The local device will no longer be used for transit traffic
C. The ISIS adjacencies become passive
D. The IS-IS adjacencies enter the "new" state
正解：B

質問 6：
Exhibit.

A router is attempting to form an OSPF neighborship with another router However, the OSPF neighborship fails to establish completely Referring to the exhibit, what is the problem?
A. There is an interface subnet mask mismatch
B. There is an OSPF area mismatch
C. There is an interface MTU mismatch
D. There is an interface type mismatch
正解：C

質問 7：
Exhibit.


You are implementing CoS for a custom application that is labeling its packets with DSCP code-point 101111. You have applied the configuration shown in the exhibit, but not that while some custom application traffic ingressin on ge-0/0/1 transits the SRX Series device successfully, packets ingressing all other ge-* interfaces are being dropped.
Which action should you take to solve this problem?
A. Remove the BA classifier from all ge-interfaces.
B. Configure a scheduler and scheduler map for expedited-forwarding and apply to all interfaces.
C. Modify the BA classifier to assign code point 101111 to loss priority low.
D. Apply the rate-limit-ef policer to all ge-interfaces.
正解：D

質問 8：
Click the Exhibit button.

Referring to the exhibit, how is R5 able to learn the networks that exist within the NSSA?
A. R5 does not learn those networks but uses a default route advertised by R2 instead.
B. R5 learns those networks from Type 3 LSAs advertised by R3.
C. R5 does not learn those networks and uses a default route advertised by R3 instead.
D. R5 learns those networks from Type 3 LSAs advertised by R2.
正解：B