New 2022 JN0-648 Dumps for JNCIP-ENT Certified Exam Questions and Answer
Realistic Verified JN0-648 exam dumps Q&As - JN0-648 Free Update
NEW QUESTION 36
Exhibit.
You are troubleshooting a route problem in the topology shown in the exhibit. The 10.30.0 0/24 route is not reachable from the R3 router. What would cause this problem?
- A. R3 does not have an OSPF route for 10.30.0.0/24
- B. R3 does not have a route to the BGP next hop of 10.30.0.0/24
- C. R3 does not have an established BGP session with R4.
- D. R4 is not advertising the 10.30.0.0/24 route to R3
Answer: B
NEW QUESTION 37
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 new packet classification, and the DSCP bits do not change.
- B. The packet is forwarded according to the original 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 are rewritten to the new class.
Answer: A
NEW QUESTION 38
Exhibit.
Referring to the exhibit, you configured a new multicast classifier for the ge-1/2/0 interface ICMP traffic to the best-effort queue and traffic from 190.168.20.0/24 to the expedited forwarding queue. You received noticed that some application are not working after the change.
Which configuration change will remedy the problem?
- A. [edit firewall familyinet filter ingress
User@host # set term 2 from protocol tcp - B. [edit firewall family inet filter ingress
User@host # set term 3 then accept - C. [edit firewall family inet filter ingress
User@host # set term 2 from service-filter hit - D. [edit firewall family inet filter ingress
User@host # set term 3 then next
Answer: B
NEW QUESTION 39
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 subnet mask mismatch.
- B. There is an interface MTU mismatch.
- C. There is an interface type mismatch.
- D. There is an OSPF area mismatch.
Answer: B
NEW QUESTION 40
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 discarded.
- B. Traffic exceeding the committed-burst size will be marked with a loss priority of high.
- C. Traffic exceeding the excess-burst size will be discarded.
- D. Traffic exceeding the committed-information-rate will be rate limited.
Answer: B
Explanation:
Explanation/Reference:
NEW QUESTION 41
Exhibit.
You have configured MSTP in your Layer 2 network. You are having problems with it establishing correctly.
Referring to the exhibit, what is causing the problem?
- A. The region name is not correct
- B. The revision number is the same on both devices
- C. The MSTI-to-VLAN mapping does not match
- D. You must assign a context ID number other than zero
Answer: C
NEW QUESTION 42
Exhibit.
A router is attempting to form an OSPF neighborship with another router However, the OSPF neighborship tails to establish completely Referring to the exhibit, what is the problem?
- A. There is an interface MTU mismatch
- B. There 15 an OSPF area mismatch
- C. There is an interface type mismatch
- D. There is an interface subnet mask mismatch
Answer: C
NEW QUESTION 43
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 R1 to assign a higher local preference value to routes advertised to ISP A.
- 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 lower MED value to routes advertised to ISP A.
- D. Apply a BGP export policy on R2 to assign a lower origin value to routes advertised to ISP B.
Answer: B
NEW QUESTION 44
When configuring 802.1X authentication, what are three server fail fallback settings? (Choose three.)
- A. count
- B. log
- C. move
- D. sustain
- E. permit
Answer: C,D,E
NEW QUESTION 45
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. move
- B. sustain
- C. deny
- D. permit
Answer: A
NEW QUESTION 46
Click the Exhibit button.
Referring to the exhibit, you must advertise the 100.0.0.0/16 routes from AS1 to AS2, but R2 is not advertising any BGP routes to R5.
Why is this happening in this scenario?
- A. The IBGP routes are not active and EBGP will advertise only active routes.
- B. The IBGP routes will not be advertised because the AS path shows as incomplete.
- C. The IBGP routes are not active because the next hop is not reachable.
- D. The IBGP routes will not be advertised because you must use a policy to advertise IBGP routes.
Answer: A
Explanation:
https://www.juniper.net/documentation/en_US/junos/topics/concept/policy-routing-policies-actions-defaults.html Default BGP Export Policy:
Readvertise all active BGP routes to all BGP speakers, while following protocol-specific rules that prohibit one IBGP speaker from readvertising routes learned from another IBGP speaker, unless it is functioning as a route reflector.
ed@vMX-PE1# show protocols bgp group eBGP | display set
set protocols bgp group eBGP type external
set protocols bgp group eBGP family inet unicast rib-group inet0-to-test set protocols bgp group eBGP peer-as 3 set protocols bgp group eBGP neighbor 10.0.13.3
[edit]
ed@vMX-PE1#
NEW QUESTION 47
Click the Exhibit button.
YourNet is learning the 210.210.40.0/24 route from Provider A and Provider
B. YourNet would like to forward traffic destined to the 210.210.40.0/24 network using Provider B.
Referring to the exhibit, how would you accomplish this task?
- A. Apply an export policy to R2's IBGP peers to set a higher local preference.
- B. Add the well-known no-export community to the routes learned through R2.
- C. Add the well-known no-export community to the routes learned through R1.
- D. Apply an export policy to R1's IBGP peers to set a higher local preference.
Answer: A
NEW QUESTION 48
You notice a mass withdrawal of routes for some of the network hosts. You determine that the link on the ESI interface is down.
Which route type is used in this scenario?
- A. Type 3
- B. Type 1
- C. Type 5
- D. Type 2
Answer: B
Explanation:
https://www.juniper.net/documentation/en_US/junos/topics/concept/evpn-bgp-multihoming-overview.html#jd0e270 This is a Type 1 mandatory route, used for fast convergence and for advertising the split horizon label. It is also known as the mass withdraw route.
NEW QUESTION 49
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-subconfed
- B. no-publish
- C. no-advertise
- D. no-export
Answer: D
Explanation:
https://routersysco.wordpress.com/2011/12/21/bgp-community-attribute-no-advertise-no-export/#:~:text=%2Dno%2Dadvertise%20means%E2%80%94Do,this%20route%20within%20an%20AS.
no-advertise-Routes in this community name must not be advertised to other BGP peers.
no-export-Routes in this community must not be advertised outside a BGP confederation boundary. A stand alone autonomous system that is not part of a confederation should be considered a confederation itself.
no-export-subconfed-Routes in this community must not be advertised to external BGP peers, including peers in other members' ASs inside a BGP confederation.
NEW QUESTION 50
What information is contained in an OSPF LSA header? (Choose two.)
- A. options
- B. protocol
- C. subnet mask
- D. length
Answer: A,D
NEW QUESTION 51
Exhibit.
The policy shown in the exhibit is applied as an export policy to your BGP neighborship.
Which action will be taken for route 12.233.45.5?
- A. It will be accepted by the default policy
- B. It will be accepted by term 1.
- C. It will be accomplished by term 1.
- D. It will be rejected by term 2.
- E. It will be evaluated by the next policy.
Answer: E
NEW QUESTION 52
You want to view the VLANs that have been created dynamically using MVRP.
Which operational mode command will display this information?
- A. Show mvrp interface
- B. Show mvrp registration-state
- C. Show mvrp dynamic-vlan memberships
- D. Show mvrp applicant-state
Answer: A
Explanation:
https://www.juniper.net/documentation/us/en/software/junos/mvrp/multicast-l2/topics/task/mvrp-mx-series-verify.html
NEW QUESTION 53
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 silently discarded and a reject message is sent to the AD.
- B. The packet is flooded out of all the ports on the SD except the one where it was received.
- C. The packet is dropped and a reject message is sent out to the port where it was received.
- D. The packet is sent to the AD to be processed and forwarded.
Answer: D
NEW QUESTION 54
Exhibit:
Referring to the exhibit, on which three IS-IS routers will the attached bit be set? (Choose three. )
- A. R2
- B. R6
- C. R5
- D. R4
- E. R3
Answer: A,B,E
NEW QUESTION 55
Exhibit.
Referring to the exhibit, which two statements are true? (Choose two )
- A. There can be more than one OSPF neighbor on the ge-0/0/0 interface
- B. The DR election process is not finished for the ge-0/0/0 interface
- C. There is no need for a DR for the ge-0/0/0 interface.
- D. There can be more than one OSPF neighbor on the ge-0/0/1 interface.
Answer: C,D
Explanation:
https://www.juniper.net/documentation/en_US/junos/topics/reference/command-summary/show-ospf-ospf3-interface.html
NEW QUESTION 56
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. RSTP
- B. MSTP
- C. STP
- D. VSTP
Answer: A
NEW QUESTION 57
Exhibit.
You are configuring, the PVLAN feature on your switches. The PVLAN will span the two EX Series switches shown in the exhibit Which three configuration parameters must be enabled on the ports connecting the two switches? (Choose three. )
- A. family Ethernet-switching
- B. interface-mode trunk
- C. inter-switch-link
- D. family inet
- E. interface-mode access
Answer: A,B,C
NEW QUESTION 58
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. Configure a scheduler and scheduler map for expedited-forwarding and apply to all interfaces.
- B. Remove the BA classifier from all ge-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.
Answer: D
NEW QUESTION 59
You have an IPv4 multicast network configured as PIM-SM.
What must be done before replacing your static RP with auto-RP?
- A. Enable each router in the network to forward multicast packets.
- B. Configure auto-RP domains on each router in the network.
- C. Configure each router in the network as a candidate BSR.
- D. Enable sparse-dense mode on each of the routers in the network.
Answer: D
Explanation:
https://www.juniper.net/documentation/en_US/junos/topics/task/configuration/mcast-pim-auto-rp.html
"Because PIM dense mode is necessary to enable auto-RP to work, which in turns enables PIM sparse mode to work, you must configure PIM sparse-dense mode in the PIM domains that use auto-RP."
NEW QUESTION 60
Exhibit.
Referring to the log shown in the exhibit, what is the problem with the OSPF adjacency establishment?
- A. The interface IP addresses on the subnet are duplicates.
- B. There is an MDS authentication mismatch.
- C. The referenced IP address does not exist on thenetwork segment.
- D. The OSPF database description packet is malformed.
Answer: A
NEW QUESTION 61
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