[Oct-2021] Verified Juniper Exam Dumps with JN0-648 Exam Study Guide
Best Quality Juniper JN0-648 Exam Questions Pass4sureCert Realistic Practice Exams [2021]
NEW QUESTION 20
Clickthe Exhibit button
You are configuring an EVPN overlay to allow VLANs to be stretched between two campus sites, but EVPN routes are not being exchanged Referring to the exhibit, which configuration statement would solve this problem?
- A. Apply the set protocols bgp group EVPN family inet-vpn any configuration on MX1 and MX?
- B. Apply the delete protocols bgp group EVPN multipath multiple-an configuration on MX1 andMX2
- C. Apply the delete protocols bgp group EVPN cluster 172 .1.1. 53 configuration on MX2
- D. Apply the set protocols bgp group EVPN family EVPN signaling configuration on MX2.
Answer: D
NEW QUESTION 21
Which two statements about BGP communities are true? (Choose two.)
- A. A BGP device can set, append, or modify the community of a route.
- B. A prefix can belong to more than community.
- C. A community is not a transitive attribute.
- D. A prefix can only belong to one community.
Answer: A,B
NEW QUESTION 22
Exhibit.
You have applied the CoS configuration shown in the exhibit to an EX4300 switch.
Which two statements are true? (Choose two. )
- A. Packets in low priority queues are serviced when strict-high priority queues have no available credits
- B. All strict-high priority queues are serviced in a round-robin fashion as long as they have remaining credits
- C. All strict-high priority queues are serviced in a round-robin fashion regardless of available credits.
- D. Packets in low priority queues transmit only when start-high priority queues are empty
Answer: B,D
NEW QUESTION 23
You are asked to deploy 802.1X on your EX Series switches. You need to ensure authenticated devices continue to have access to the network even if the authentication server fails.
Which action meets this configuration objective?
- A. Set the reauthentication interval to a value of disable.
- B. Configure the static MAC bypass for the authentication server.
- C. Configure the server fail fallback with a value of sustain.
- D. Set the reauthentication interval to a value of 0.
Answer: C
NEW QUESTION 24
which protocol is a multicast routing protocol?
- A. PIM
- B. OSPF
- C. BGP
- D. IS-IS
Answer: A
NEW QUESTION 25
You have an MX960 configured as a Fusion aggregation device (AD) and two QFX5100 switches as satellite devices (SD). You have configured local-switching for each SD. A packet with an unknown MAC address is received on one of the SD extended ports.
Which statement is correct in this scenario?
- A. The packet is sent to the AD to be processed and forwarded.
- B. The packet is silently discarded and a reject message is sent to the AD.
- C. The packet is dropped and a reject message is sent out to the port where it was received.
- D. The packet is flooded out of all the ports on the SD except the one where it was received.
Answer: A
NEW QUESTION 26
Click the Exhibit button.
You receive the same 75.100.0.0/16 route from all four ISPs to which you are connected.
Referring to the exhibit, which ISP's route will be selected as active?
- A. ISP-A
- B. ISP-D
- C. ISP-B
- D. ISP-C
Answer: B
NEW QUESTION 27
In IS-IS, advertising PDUs with the overload-bit has which effect?
- A. The IS-IS adjacencies enter the "new" state.
- B. The local device will no longer be used for transit traffic.
- C. The local device's PDUs are marked with a metric of 65535.
- D. The IS-IS adjacencies become passive.
Answer: B
NEW QUESTION 28
Click the Exhibit button.
You are adding VNI 101 to your EVPN-VXLAN network, but traffic is not being sent or received.
Referring to the exhibit, which configuration statement will solve the problem?
- A. set routing-instances EVPN1 vxlan encapsulate-inner-vlan
- B. set routing-instances EVPN1 instance-type evpn
- C. set routing-instances EVPN1 bridge-domains BD-101 vxlan vni 101
- D. set routing-instances EVPN1 vrf-table-label
Answer: B
NEW QUESTION 29
Which two statements are true about IS-IS levels? (Choose two.)
- A. Level 2 systems do not advertise Level 2 routes into a Level area by default.
- B. Level 1 systems use a default route to reach AS external routes located in other areas.
- C. Level 2 systems must use the loopback address as a part of the ISO network address.
- D. Level 1 system only from adjacencies with other systems that have different area IDs.
Answer: B
NEW QUESTION 30
Click the Exhibit button.
You are configuring BGP policies for a site with a dual-homed connection as shown in the exhibit. You must ensure that inbound traffic from Internet hosts flow through the ISP A connection.
Which statement is correct in this scenario?
- A. Apply a BGP export policy on R2 to assign a lower origin value to routes advertised to ISP B.
- B. Apply a BGP export policy to R2 to prepend [65001 65001 65001 65001 65001] to the AS path of routes advertised to ISP B.
- C. Apply a BGP export policy on R1 to assign a higher local preference value to routes advertised to ISP A.
- D. Apply a BGP export policy on R1 to assign a lower MED value to routes advertised to ISP A.
Answer: B
NEW QUESTION 31
Click the Exhibit button.
Referring to the exhibit, which statement is true?
- A. The current device is authenticated using MAC RADIUS.
- B. The current device was allowed after authentication attempts to the RADIUS server failed.
- C. Only 802.1X authentication will be used for devices connecting to ge-0/0/15.
- D. Additional users will automatically be allowed to connect to ge-0/0/15.
Answer: B
NEW QUESTION 32
You are implementing a single spanning tree instance in your network and want to use the protocol that will give you the best convergence time in the event of a physical network failure of the root bridge.
Which spanning tree protocol will satisfy this requirement?
- A. VSTP
- B. RSTP
- C. STP
- D. MSTP
Answer: B
NEW QUESTION 33
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 which is least congested.
- C. The packet will be placed into the queue that has the most bandwidth assigned to it.
- D. The packet will be placed in a queue associated with the BA classifier.
Answer: D
NEW QUESTION 34
What is the correct authentication processing order on EX Series switches when multiple Layer 2 authentication methods are enabled?
- A. MAC RADIUS -> 802.1X -> captive portal
- B. 802.1X -> captive portal -> MAC RADIUS
- C. 802.1X -> MAC RADIUS -> captive portal
- D. captive portal -> MAC RADIUS -> 802.1X
Answer: C
NEW QUESTION 35
Click the Exhibit button.
During an outage, you review the status of the Q-in-Q implementation on VLAN 300.
Referring to the exhibit, what would be the cause of the outage?
- A. The VLAN range overlaps.
- B. The S-VLAN is disabled.
- C. The C-VLANs are disabled.
- D. There are no active ports.
Answer: D
NEW QUESTION 36
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-export
- B. no-export-subconfed
- C. no-advertise
- D. no-publish
Answer: A
NEW QUESTION 37
Exhibit.
You are adding VNI 101 to your EVPN-VXLAN network, but traffic is not being sent to received.
Referring to the exhibit, which configuration statement will solve the problem?
- A. set routing-instances EVPN1 bridge-domains BD-101 vxlan vni 101
- B. set routing-instances EVPN1 instance-type evpn
- C. set routing-instances EVPN1 vxlan encapsulate-inner-vlan
- D. set routing-instances EVPN1 vrf-table-label
Answer: A
NEW QUESTION 38
Your network is configured for EVPN load balancingon three different access switches During an outage, you notice that not all interfaces are receiving traffic as expected Which two requirements would you validate to identify this problem? (Choose two )
- A. Validate that the same esi value is configured on multiple interfaces on all switches.
- B. Validate that the all-active flag configured for multipleinterfaces on each switch
- C. Validate that the same esi value is only configured on one interface per switch
- D. Validate that all-active is configured for only interface per switch
Answer: A,B
NEW QUESTION 39
Your IPv4 multicast network uses different MX Series routers for the source DR and the PIM sparse-mode RP.
What is required before PIM register messages are exchanged between the DR and RP routers?
- A. Enable tunnel services on the DR and RP routers.
- B. Add a tunnel services PIC to the RP router.
- C. Add an adaptive services PIC to the DR router.
- D. Configure PIM encapsulation on the DR and RP routers.
Answer: A
NEW QUESTION 40
Exhibit:
Referring to the exhibit, which statement is correct*?
- A. This router originated the LSA.
- B. This router is an ASBR.
- C. This router is connected to 27 different areas.
- D. This router is an ABR.
Answer: A
NEW QUESTION 41
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. Modify the BAclassifier to assign code point 101111 to loss priority low.
- B. Remove the BA classifier from all ge-interfaces.
- C. Apply the rate-limit-ef policer to all ge-interfaces.
- D. Configure a scheduler and scheduler map for expedited-forwarding and apply to all interfaces.
Answer: C
NEW QUESTION 42
Click the Exhibit button.
You are investigating reports of increased latency and discover that some routes cause customer traffic to traverse a route reflector instead of the optimal path.
Referring to the exhibit, which configuration statement would solve the problem?
- A. delete protocols bgp group BGP-MESH export NHS
- B. delete protocols bgp group BGP-MESH peer-as
- C. set policy-options policy-statement NHS term BGP_ROUTES from external
- D. set protocols bgp group BGP-MESH import NHS
Answer: C
NEW QUESTION 43
You are enabling MSTP in your Layer 2 network to prevent loops.
In this scenario, which three parameters must match on all switches in the network? (Choose three. )
- A. configuration name
- B. bridge priority
- C. MSTI-to-VLAN mapping
- D. revision level
- E. max age
Answer: A,C,D
NEW QUESTION 44
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