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Juniper JN0-648 Exam Dumps
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Juniper JN0-648 Practice Test 1-13
QUESTION 1
You are using 802.1X in your access network consisting of EX Series switches. You recently had a failure with your
RADIUS server which resulted in authenticating client devices being denied access to the network. You want to change
this behavior so that authenticating clients are directed to a remediation VLAN.
Which RADIUS server failback setting satisfies this requirement?
A. permit
B. move
C. sustain
D. deny
Correct Answer: B
QUESTION 2
Which protocol is used for port-level access control and authentication?
A. MD5
B. IPsec
C. 802.1X
D. AES
Correct Answer: C
QUESTION 3
Your network has Junos Fusion configured with MX960 routers as aggregation devices (AD) and QFX5100 switches as
satellite devices (SD). Which two statements are correct in this scenario? (Choose two.)
A. All SDs connected to a single AD must use the same software version.
B. SDs are added to the AD by configuring the cascade port on the AD.
C. The Fusion extended ports are configured on the SDs.
D. The AD runs the Junos software for all its connected SDs.
Correct Answer: BC
QUESTION 4
Click the Exhibit button.
Which well-known community needs to be used to restrict 10.0.0.0/8 from being advertised to AS 2?
A. no-publish
B. no-advertise
C. no-export-subconfed
D. no-export
Correct Answer: D
QUESTION 5
You are currently using VLAN IDs 2 through 300 within your Layer 2 domain and you need to configure VSTP to prevent
loops. You must ensure that all VLANs are loop free.
In this scenario, which statement is correct?
A. You must ensure that the VLANs are balanced between two different root bridges.
B. You must enable RSTP to account for all VLANs.
C. You must ensure that the bridge priority is set to the lowest value on all switches in the Layer 2 domain.
D. You must enable all VLANs, 2 through 300, under the VSTP configuration.
Correct Answer: D
QUESTION 6
Click the Exhibit button.
You have configured and applied the policer shown in the exhibit to your Junos device. Which statement is true in this
scenario?
A. Traffic exceeding the committed-burst size will be marked with a loss priority of high.
B. Traffic exceeding the excess-burst size will be discarded.
C. Traffic exceeding the committed-information-rate will be rate limited.
D. Traffic exceeding the committed-burst size will be discarded.
Correct Answer: A
QUESTION 7
Click the Exhibit button.
Referring to the exhibit, which statement is true?
A. Only 802.1X authentication will be used for devices connecting to ge-0/0/15.
B. Additional users will automatically be allowed to connect to ge-0/0/15.
C. The current device is authenticated using MAC RADIUS.
D. The current device was allowed after authentication attempts to the RADIUS server failed.
Correct Answer: D
QUESTION 8
Which statement is correct about MSTP?
A. MSTP enables mapping multiple independent spanning-tree instances onto one physical topology.
B. MSTP enables dynamic discovery of Layer 2 neighbors.
C. MSTP dynamically manages VLAN registration in a LAN.
D. MSTP uses stacked VLAN tags to extend a Layer 2 Ethernet connection between multiple sites.
Correct Answer: A
QUESTION 9
Click the Exhibit button.
Referring to the exhibit, which two statements are true with regards to deploying CoS? (Choose two.)
A. You should apply MF classifiers on the LAN-facing interfaces of the routers.
B. You should apply MF classifiers on the point-to-point interfaces of the routers.
C. You should apply BA classifiers on the point-to-point interfaces of the routers.
D. You should apply BA classifiers on the LAN-facing interfaces of the routers.
Correct Answer: AC
QUESTION 10
Click the Exhibit button.
Referring to the exhibit, the source is currently sending multicast traffic using group 224.1.1.1, which is being received
by R1. R2 is not receiving PIM register messages.
What would be the cause of this problem?
A. Tunnel services have not been enabled on R1.
B. All routers have not been configured with the same Auto-RP discovery group.
C. R5 has not received an IGMP report of 224.1.1.1.
D. A(*,G) tree has not been built yet.
Correct Answer: C
QUESTION 11
Click the Exhibit button.
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 type mismatch.
B. There is an OSPF area mismatch.
C. There is an interface subnet mask mismatch.
D. There is an interface MTU mismatch.
Correct Answer: D
QUESTION 12
Click the Exhibit button.
There is a functioning OSPFv3 neighborship between Router-1 and Router-2 over the ge-0/0/1 link. However, the
172.100.100.0/24 and 172.101.101.100/24 routes are not being shared through OSPFv3. Referring to the configuration
shown in the exhibit, which two actions must you take to solve the problem? (Choose two.)
A. Add interface ge-0/0/1 under the IPv4 unicast realm for both routers.
B. Add the IPv6 family protocol under ge-0/0/2 for both routers.
C. Add the lo0 interface under OSPFv3 for both routers.
D. Add interface ge-0/0/2 under OSPFv3 for both routers.
Correct Answer: AB
QUESTION 13
When configuring class of service, what would you use to allocate bandwidth to a forwarding class?
A. buffer depth
B. transmit rate
C. bandwidth
D. speed
Correct Answer: B
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