JN0-649 Actual Questions Answers PDF 100% Cover Real Exam Questions
JN0-649 Exam questions and answers
The JN0-649 certification exam is a comprehensive exam that covers a wide range of topics related to enterprise routing and switching. JN0-649 exam tests candidates on their knowledge of network design principles, routing protocols, security, and troubleshooting. JN0-649 exam consists of multiple-choice questions and simulation questions, which require candidates to demonstrate their practical skills in a simulated environment. JN0-649 exam is designed to assess candidates' ability to design, configure, and troubleshoot enterprise level networks.
NEW QUESTION # 106
A BGP network has been designed to provide resiliency and redundancy to a multihomed customer network.
Which two statements are correct in this scenario? (Choose two.)
- A. The ttl statement must be configured to accommodate peering to a loopback address of a directly connected peer.
- B. A routing policy will be required to forward traffic to both next hops.
- C. The TTL value of 1 is set to limit the scope of the EBGP session.
- D. Both the next hops will be used to forward traffic to R2.
Answer: A,B
NEW QUESTION # 107
You are asked to establish full connectivity between all devices in the BGP network.
Referring to the exhibit, which two configuration changes will allow BGP route advertisements? (Choose two.)
- A. On R1 and R3, include the advertise-peer-as statement at the [edit protocols bgp group external] hierarchy.
- B. On R1 and R3, include the loops 2 statement at the [edit protocols bgp family inet unicast] hierarchy.
- C. On R2, include the loops 2 statement at the [edit protocols bgp family inet unicast] hierarchy.
- D. On R2, include the advertise-peer-as statement at the [edit protocols bgp group external] hierarchy.
Answer: B,D
Explanation:
https://www.juniper.net/documentation/us/en/software/junos/bgp/topics/ref/statement/advertise-peer-as-edit-protocols-bgp.html
NEW QUESTION # 108
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 will not be advertised because the AS path shows as incomplete.
- B. The IBGP routes are not active because the next hop is not reachable.
- C. The IBGP routes are not active and EBGP will advertise only active routes.
- D. The IBGP routes will not be advertised because you must use a policy to advertise IBGP routes.
Answer: C
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 # 109
Referring to the outputs shown in the exhibit, which two statements are correct about the IS-IS adjacency?
(Choose two.)
- A. R1 is configured to participate in both Level 1 and Level 2.
- B. R2 is configured to participate in both Level 1 and Level 2.
- C. R2 is configured to participate in Level 2 only.
- D. R1 is configured to participate in Level 2 only.
Answer: A,C
Explanation:
From the provided IS-IS adjacency outputs:
* R1 is configured to participate in both Level 1 and Level 2 (A): This is indicated by the adjacency states for both Level 1 and Level 2 on the R1 interfaces.
* R2 is configured to participate in Level 2 only (D): This is shown by the adjacency state for Level 2 only on the R2 interfaces.
References:
* The IS-IS adjacency outputs indicate the state and levels of participation for each router.
* Configuration and command references from "Example configs for VMRCAXP01W.txt" and other
* documents provide context for understanding IS-IS states and levels.
NEW QUESTION # 110
Referring to the exhibit, which LSA type is used to advertise 192.168.1.0/24 to R5?
- A. Type 5
- B. Type 4
- C. Type 3
- D. Type 7
Answer: A
Explanation:
* Area-1 has no external connections. However, Area-1 has static route (172.16.31.0/24) that are not internal OSPF route. You can limit the external route advertisements to the area and advertise the static routes by designating the area an NSSA. In an NSSA, the ASBR (vMX1) generates NSSA external (Type 7) LSAs and floods them into the NSSA, where they are contained. Type-7 LSAs allow an NSSA to support the presence of ASBR and their corresponding external routing information. The ABR (vMX2) converts Type-7 LSAs into Type-5 External LSAs and leaks them to the other areas, but external routes from other areas are not advertised within the NSSA. An admin should check this and
* change it https://www.packetswitch.co.uk/configuring-junos-ospf-stub-and-nssa-areas/
https://www.juniper.net/documentation/us/en/software/junos/ospf/topics/ref/statement/nssa-edit-protocols-
NEW QUESTION # 111
You are 802.1X supplicant, but traffic must be accepted once the user has authenticated their computer on the port In this scenario, which supplicant mode should be used?
- A. multiple
- B. single-secure
- C. single
- D. captive-portal
Answer: C
NEW QUESTION # 112
You are troubleshooting connectivity between an EVPN spine switch configured as a route reflector and a leaf node with an IP address of 10.30.100.6.
Referring to the exhibit, what is the problem?
- A. The leaf node is not configured for the family evpn NLRI.
- B. The neighbor 10.30.100.6 statement is missing from spine1's configuration.
- C. The spine node is not configured for the family inet NLRI.
- D. The neighbor 10.30.100.3 statement is missing from leaf1's configuration.
Answer: C
NEW QUESTION # 113
You have multiple BGP routes to the same prefix with equal local-preference values and AS-path lengths.
In this scenario, which route will be preferred in the route selection process?
- A. The route with the lowest MED value.
- B. The route with the least preferred origin value.
- C. The route with the most preferred origin value.
- D. The route with the highest MED value.
Answer: C
Explanation:
https://www.juniper.net/documentation/en_US/junos/topics/reference/general/routing-protocols- address-representation.html
NEW QUESTION # 114
You recently committed a change to a router to reject OSPF routes sourced from area 10.
However, you are still seeing area 10 routes in the routing table. Referring to the exhibit, which statement is correct?
- A. The routes remain in the table until the device is rebooted.
- B. The routes only timeout after 24 hours.
- C. The routes remain in the table until the routing daemon is restarted.
- D. The OSPF protocol is first matched by find-ospf and accepted.
Answer: D
Explanation:
Once a route is accepted, no other terms in the routing policy are evaluated.
NEW QUESTION # 115
A user is attempting to watch a high-definition video being streamed from the media server over the network. However, the user complains that the experienced video quality is poor. While logged on to router B, a Juniper Networks device, you notice that video packets are being dropped.
In this scenario, what would solve this problem?
- A. Adjust the expedited-forwarding BA classifier to router B's ge-0/0/0 interface to support a higher transmit rate.
- B. Adjust the scheduler for the expedited-forwarding forwarding class to support a higher transmit rate.
- C. Adjust the expedited-forwarding BA classifier on router B's ge-0/0/1 interface to support a higher transmit rate.
- D. Adjust the scheduler-map to support a higher transmit rate.
Answer: C
NEW QUESTION # 116
You are asked to enforce user authentication using a captive portal before users access the corporate network.
Which statement is correct in this scenario?
- A. A captive portal can be bypassed using an allowlist command containing a device's IP address.
- B. HTTPS is the default protocol for a captive portal.
- C. All Web browser requests are redirected to the captive portal until authentication is successful.
- D. When enabled, a captive portal must be applied to each individual interface.
Answer: C
Explanation:
Captive Portal Functionality:
* Captive portals are used to enforce user authentication by redirecting web browser requests to a login page until authentication is successful.
Operation:
* When a user connects to the network, their HTTP requests are intercepted and redirected to the captive portal login page. This process continues until the user provides valid credentials.
Implementation:
* Juniper Configuration:
shell
Copy code
set security authentication-web redirect-url "http://<captive-portal-url>" set security zones security-zone <zone> interfaces <interface> host-inbound-traffic system-services http set security zones security-zone <zone> interfaces <interface> host-inbound-traffic system-services https set access profile <profile-name> captive-portal
* This configuration ensures that all HTTP/HTTPS traffic is redirected to the specified captive portal for authentication.
References:
* Detailed configuration and operation are documented in "Tech Ops Managed Router Juniper Install Guide" and related documents.
NEW QUESTION # 117
A modified deficit round-robin scheduler is defined by which three variables? (Choose three.)
- A. priority
- B. Layer 3 fields
- C. transmit rate
- D. WRED
- E. buffer size
Answer: A,C,E
Explanation:
To configure MDRR, configure a scheduler at the [edit class-of-service schedulers] hierarchy level:
content_copy zoom_out_map
[edit class-of-service schedulers]
scheduler-name {
buffer-size (seconds | percent percentage | remainder | temporal microseconds); priority priority-level; transmit-rate (percent percentage | rate | remainder) <exact | rate-limit>;
}
https://www.juniper.net/documentation/us/en/software/junos/cos/topics/concept/cos-configuring- mdrr-on-enhanced-queuing-dpcs.html
NEW QUESTION # 118
You are troubleshooting an EVPN-VXLAN IP fabric and observe the loop shown in the exhibit.
Which two steps would you take to further troubleshoot this problem? (Choose two.)
- A. Issue the show route table bgp.evpn.0 command on Leaf2 and verify that Type 4 routes are present.
- B. Verify that the same ESI is configured on the two links from the source.
- C. Verify that the same ESI is configured on the link from the host and that it matches the source.
- D. Issue the show route table bgp.evpn.0 command on Leaf2 and verify that Type 3 routes are present.
Answer: A,D
Explanation:
Type 2 route, MAC with IP advertisement route-Type 2 routes are per-VLAN routes, so only PEs that are part of a VNI need these routes. EVPN allows an end host's IP and MAC addresses to be advertised within the EVPN Network Layer reachability information (NLRI). This allows for control plane learning of ESI MAC addresses. Because there are many Type 2 routes, a separate route-target auto-derived per VNI helps to confine their propagation. This route type is supported by all EVPN switches and routers. Type 5 route, IP prefix Route-An IP prefix route provides encoding for inter-subnet forwarding. In the control plane, EVPN Type 5 routes are used to advertise IP prefixes for inter-subnet connectivity across data centers. To reach a tenant using connectivity provided by the EVPN Type 5 IP prefix route, data packets are sent as Layer 2 Ethernet frames encapsulated in the VXLAN header over the IP network across the data centers.
NEW QUESTION # 119
You want to create an OSPF area that only contains intra-area route information in the form of Type 1 and Type 2 LSAs.
In this scenario, which area is needed to accomplish this task?
- A. totally stubby area
- B. stub area
- C. non-to-stubby area
- D. totally non-to-stubby area
Answer: A
Explanation:
A totally stubby area (TSA) is a stub area in which summary link-state advertisement (type 3 LSAs) are not sent. A default summary LSA, with a prefix of 0.0. 0.0/0 is originated into the stub area by an ABR, so that devices in the area can forward all traffic for which a specific route is not known, via ABR.
NEW QUESTION # 120
You are asked to enforce user authentication using a captive portal before users access the corporate network.
Which statement is correct in this scenario?
- A. A captive portal can be bypassed using an allowlist command containing a device's IP address.
- B. HTTPS is the default protocol for a captive portal.
- C. All Web browser requests are redirected to the captive portal until authentication is successful.
- D. When enabled, a captive portal must be applied to each individual interface.
Answer: C
NEW QUESTION # 121
You are asked to enforce user authentication using a captive portal before users access the corporate network.
Which statement is correct in this scenario?
- A. A captive portal can be bypassed using an allowlist command containing a device's IP address.
- B. HTTPS is the default protocol for a captive portal.
- C. All Web browser requests are redirected to the captive portal until authentication is successful.
- D. When enabled, a captive portal must be applied to each individual interface.
Answer: C
Explanation:
You can set up captive portal authentication on your switch to redirect all Web browser requests to a login page that requires users to input a username and password before they are allowed access. Upon successful authentication, users are allowed access to the network and redirected to the original page requested. Junos OS provides a customizable template for the captive portal window that allows you to easily design and modify the look of the captive portal login page. You can modify the design elements of the template to change the look of your captive portal login page and to add instructions or information to the page. You can also modify any of the design elements of a captive portal login page. The first screen displayed before the captive login page requires the user to read the terms and conditions of use. By clicking the Agree button, the user can access the captive portal login page. https://www.juniper.net/documentation/us/en/software/junos/user-access/topics/topic-map/user-authentication-captive-portal.html
NEW QUESTION # 122
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Candidates who pass JN0-649 exam will earn the Juniper Networks Certified Internet Professional Enterprise Routing and Switching (JNCIP-ENT) certification. Enterprise Routing and Switching, Professional (JNCIP-ENT) certification validates the candidate's practical skills and knowledge in installing, configuring, and troubleshooting Juniper Networks' Enterprise Routing and Switching technologies.
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