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NEW QUESTION # 72
You are implementing the route summarization feature of OSPF. Which two results do you achieve in this scenario? (Choose two.)
- A. It provides optimal routing in the network.
- B. It reduces the impact of topology changes on a device.
- C. It helps in migrating to future multi-area OSPF network designs.
- D. It reduced the routing table size, enabling devices to store and process less information.
Answer: B,D
Explanation:
OSPF inter-area route summarization reduces the routing information exchanged between areas and the size of routing tables, and improves routing performance. OSPF inter-area route summarization enables an ABR to summarize contiguous networks into a single network and advertise the network to other areas.
NEW QUESTION # 73
Which statement is correct about IS-IS?
- A. Level 2 routers must share the same area address.
- B. Level 1 routers route traffic between autonomous systems.
- C. Level 1/2 routers automatically inject a default route to the nearest Level 1 router.
- D. IS-IS uses areas and an autonomous system.
Answer: D
Explanation:
IS-IS (Intermediate System to Intermediate System) is a link-state routing protocol used to move information efficiently within a computer network. Here is the detailed explanation about the statements:
* Option A: IS-IS uses areas and an autonomous system.
* This statement is correct. IS-IS organizes the network into a single autonomous system (AS), which can be divided into smaller groups called areas. Routing between areas is organized hierarchically. Each IS-IS network is treated as an autonomous system, and within that AS, multiple areas can be defined for efficient routing.
* Option B: Level 1/2 routers automatically inject a default route to the nearest Level 1 router.
* This statement is incorrect. Level 1/2 routers do not automatically inject default routes. Instead, they set the ATTACHED bit in their Level 1 link-state PDU when they can reach other areas, prompting Level 1 routers to use them as default gateways.
* Option C: Level 2 routers must share the same area address.
* This statement is incorrect. Level 2 routers operate across multiple areas and do not need to share the same area address. They are responsible for inter-area routing and thus work across different areas.
* Option D: Level 1 routers route traffic between autonomous systems.
* This statement is incorrect. Level 1 routers route traffic within a single area and forward inter-area traffic to Level 2 routers, which handle inter-area routing.
ConclusionGiven the above explanations, the correct statement about IS-IS is:
* A: IS-IS uses areas and an autonomous system.
This is based on the hierarchical structure of IS-IS routing where the network is divided into areas within a single autonomous system.
For further details, you can refer to the Juniper IS-IS Overview.
NEW QUESTION # 74
Referring to the exhibit, which two statements are correct? (Choose two.)
- A. PoE is not enabled on the ge-0/0/0 interface.
- B. The maximum wattage that this switch can allocate to attached Ethernet devices is 100 watts.
- C. If the total power consumption exceeds 90 watts, the ge-0/0/11 interface will continue to receive power.
- D. The ge-0/0/10 interface supports PoE+.
Answer: B,D
Explanation:
POE is enabled in the interface ge-0/0/0 but nothing is connected to it. switch is in AT mode (poe+) and interface ge-0/0/11 supports poe+ judging by maximun wattage
NEW QUESTION # 75
Referring to the exhibit, which two statements are correct? (Choose two.)
- A. The BGP neighbor cannot advertise EVPN related routes.
- B. The BGP neighbor can advertise L3 VPN related routes.
- C. The BGP neighbor cannot advertise L3 VPN related routes.
- D. The BGP neighbor can advertise EVPN related routes.
Answer: B,D
NEW QUESTION # 76
The connection between DC1 and DC2 is routed as shown in the exhibit.
In this scenario, which statement is correct?
- A. The border devices must be able to perform Layer 3 routing and provide IRB functionality.
- B. Type 2 and Type 5 routes will be exchanged between DC1 and DC2.
- C. An IP prefix route provides encoding for intra-subnet forwarding.
- D. L3VPN must be enabled to advertise reachability.
Answer: A
Explanation:
https://www.juniper.net/documentation/us/en/software/junos/evpn-vxlan/topics/concept/evpn-route-type5-understanding.html
NEW QUESTION # 77
You are asked to configure 802.1X on your access ports to allow only a single device to authenticate.
In this scenario, which configuration would you use?
- A. MAC authentication mode
- B. single supplicant mode
- C. multiple supplicant mode
- D. single-secure supplicant mode
Answer: D
Explanation:
Single supplicant mode authenticates only the first end device that connects to an authenticator port. All other end devices connecting to the authenticator port after the first has connected successfully, whether they are
802.1X-enabled or not, are permitted access to the port without further authentication. If the first authenticated end device logs out, all other end devices are locked out until an end device authenticates. Single-secure supplicant mode authenticates only one end device to connect to an authenticator port. No other end device can connect to the authenticator port until the first logs out
NEW QUESTION # 78
You are asked to implement fault tolerant RPs in your multicast network.
Which two solutions would accomplish this behavior? (Choose two.)
- A. Use IGMPv3 with statically defined RPs.
- B. Use BFD with statically defined RPs.
- C. Use MSDP with statically defined RPs.
- D. Use anycast PIM with statically defined RPs.
Answer: C,D
NEW QUESTION # 79
Referring to the exhibit, which statement is correct?
- A. The route is learned from a multipath BGP session.
- B. The route is learned from only one neighbor.
- C. The route is learned from three different neighbors.
- D. The route is learned from a multihop BGP session.
Answer: B
NEW QUESTION # 80
You are implementing 802.1x access control in your network of EX Series switches. You have some older client devices connecting to your network which do not support 802.1x.
Which statement is true regarding the older devices?
- A. By default, the supplicant will send EAP messages and keep the port in an unauthorized state.
- B. By default, the authenticator will send EAP messages and keep the port in an unauthorized state.
- C. By default, the supplicant will send EAP messages until it reaches a predefined limit, after which it begins to forward traffic.
- D. By default, the authenticator will send EAP messages until it reaches a predefined, after which it begins to forward traffic.
Answer: C
NEW QUESTION # 81
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. Apply the rate-limit-ef policer to all ge-interfaces.
- B. Remove the BA classifier from all ge-interfaces.
- C. Configure a scheduler and scheduler map for expedited-forwarding and apply to all interfaces.
- D. Modify the BA classifier to assign code point 101111 to loss priority low.
Answer: A
NEW QUESTION # 82
You are asked to configure 802.1X on your access ports to allow only a single device to authenticate.
In this scenario, which configuration would you use?
- A. MAC authentication mode
- B. single supplicant mode
- C. multiple supplicant mode
- D. single-secure supplicant mode
Answer: D
Explanation:
Single supplicant mode authenticates only the first end device that connects to an authenticator port. All other end devices connecting to the authenticator port after the first has connected successfully, whether they are 802.1X-enabled or not, are permitted access to the port without further authentication. If the first authenticated end device logs out, all other end devices are locked out until an end device authenticates. Single-secure supplicant mode authenticates only one end device to connect to an authenticator port. No other end device can connect to the authenticator port until the first logs out.
NEW QUESTION # 83
You have PIM SM multicast configure and running in a network environment comprised of EX4300 devices. Your customer report increased delay when switching channels using IPTV. To help decrease the delay, you implement PIM join balancing. You add the set protocol pim join- load-balance command to the configuration. After committing, you notice that the flows are still using one path.
In this scenario, which statement is correct?
- A. IGMP snooping must be configured.
- B. PIM join load-balancing also be configured.
- C. The clear pim join-distribution command must be issued.
- D. The interface must be specified to use for load balancing
Answer: C
NEW QUESTION # 84
You are asked to merge a RIP network with your OSPF network. As a first step, you establish connectivity between the RIP network and the OSPF network. The RIP network connects to an NSSA area. Which two statements are true in this scenario? (Choose two.)
- A. To share RIP routes with the OSPF network, an export policy will be required on the ABR.
- B. To share RIP routes with the OSPF network, an export policy will be required on the ASBR.
- C. Be default, RIP routes have a higher route preference than external OSPF routes.
- D. By default, external OSPF routes have a higher route preference than RIP routes.
Answer: B,D
Explanation:
Route Preference Values
OSPF Internal = 10
RIP = 100
OSPF External = 150
NEW QUESTION # 85
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. interface-mode trunk
- B. family inet
- C. interface-mode access
- D. family Ethernet-switching
- E. inter-switch-link
Answer: A,D,E
NEW QUESTION # 86
Remote branches connect to the corporate WAN through access switches. The access switches connect to access ports on the WAN distribution switch, as shown in the exhibit. L2PT has previously been configured on the tunnel Layer 2 traffic across the WAN. You decide to move the L2PT tunnel endpoints to the access switches. When you apply the L2PT configuration to the access switches, the ports that connect the access switches to the distribution switch shut down.
Which action would solve this problem?
- A. Disable the BPDU block function on the distribution switch.
- B. Configure the links between the access switches and the distribution switch as a trunk port.
- C. Configure a GRE tunnel to encapsulate the L2PT traffic across the WAN.
- D. Disable the BPDU block function on the access switches.
Answer: B
NEW QUESTION # 87
Your enterprise network is running BGP VPNs to support multitenancy. Some of the devices with which you peer BGP do not support the VPN NLRI. You must ensure that you do not send BGP VPN routes to the remote peer.
Which two configuration steps will satisfy this requirement? (Choose two.)
- A. Configure the apply-vpn-export feature on the local BGP peer.
- B. Configure a route reflector for the VPN NLRI.
- C. Configure an import policy on the remote peer to reject the routes when they are received.
- D. Configure an export policy on the local BGP peer to reject the VPN routes being sent to the remote peer.
Answer: A,D
Explanation:
* Step 1: Identify the problem.
* Devices do not support VPN NLRI, and you must prevent these devices from receiving BGP VPN routes.
* Step 2: Analyze the possible solutions.
* Option A: Configure an import policy on the remote peer to reject the routes when they are received.
* This approach would require configuration on the remote peer, which might not always be practical or possible.
* Option B: Configure an export policy on the local BGP peer to reject the VPN routes being sent to the remote peer.
* This ensures the local BGP peer does not send the VPN routes to the remote peer, directly addressing the problem.
* Option C: Configure a route reflector for the VPN NLRI.
* This does not solve the issue of preventing the advertisement of VPN routes to non-supporting peers.
* Option D: Configure the apply-vpn-export feature on the local BGP peer.
* This feature ensures that the VPN export policies are applied, preventing the advertisement of VPN routes to peers that do not support VPN NLRI.
* Step 3: Verify the configurations.
* Option B and Option D directly address the requirement without needing configurations on the remote peer.
References:
* Juniper BGP configuration guide on export policies.
* Commands for applying export policies:
shell
Copy code
set policy-options policy-statement <policy-name> term <term-name> from protocol bgp-vpn set policy-options policy-statement <policy-name> term <term-name> then reject set protocols bgp group <group-name> export <policy-name> set protocols bgp apply-vpn-export
NEW QUESTION # 88
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Candidates for the Juniper JN0-649 Certification Exam should have experience working with Juniper Networks’ enterprise routing and switching technologies. They should have a good understanding of networking protocols, network design principles, and network troubleshooting techniques. It is also recommended that candidates have some experience with Juniper Networks’ network automation and scripting technologies. Passing the JN0-649 Certification Exam will authenticate the candidate's expertise in enterprise routing and switching technologies, which can enhance their career opportunities and earning potential in the networking industry.
To be eligible for the JN0-649 exam, candidates should have already obtained the Juniper Networks Certified Specialist Enterprise Routing and Switching (JNCIS-ENT) certification, or have equivalent experience in enterprise routing and switching technologies. The JN0-649 exam consists of 65 multiple-choice questions and has a time limit of 120 minutes. Candidates must achieve a score of 65% or higher to pass the exam.
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