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The JN0-649 exam is a comprehensive test that covers a wide range of topics, including advanced switching concepts, Layer 2 and Layer 3 protocols, routing policy and firewall filters, and high availability and virtualization technologies. JN0-649 exam is designed to test the candidate's ability to apply their knowledge to real-world scenarios and to make informed decisions in complex network environments.
NEW QUESTION # 36
Referring to the exhibit, you have placed the cos multifield classifier on all edge interfaces and configured the relevant CoS parameters.
In this scenario, which two statements are correct? (Choose two.)
- A. SSH traffic using the default port will be placed in the best-effort forwarding class and accepted.
- B. SSH traffic using the default port will be placed in the af forwarding class and accepted.
- C. UDP traffic using the 16000 port will be placed in the best-effort forwarding class and accepted.
- D. UDP traffic using the 16000 port will be placed in the voice forwarding class and accepted.
Answer: B,D
NEW QUESTION # 37
In IS-IS advertising POUs with the overload bit has which effect?
- A. The ISIS adjacencies become passive
- B. The IS-IS adjacencies enter the "new" state
- C. The local device will no longer be used for transit traffic
- D. The local device's POUs are marked with a metric of 65535
Answer: C
NEW QUESTION # 38
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 5
- B. Type 1
- C. Type 3
- 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 # 39
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 a route reflector for the VPN NLRI.
- B. Configure an import policy on the remote peer to reject the routes when they are received.
- C. Configure an export policy on the local BGP peer to reject the VPN routes being sent to the remote peer.
- D. Configure the apply-vpn-export feature on the local BGP peer.
Answer: C,D
NEW QUESTION # 40
Referring to the exhibit, which two statements are true with regards to deploying CoS? (Choose two.)
- A. You should apply BA classifiers on the LAN-facing interfaces of the routers
- B. You should apply MF classifiers on the LAN-facing interfaces of the routers
- C. You should apply BA classifiers on the point-to point interfaces of the routers.
- D. You should apply MF classifiers on the point-to-point interfaces of the routers
Answer: B,C
NEW QUESTION # 41
You are implementing the route summarization feature of OSPF.
Which two results do you achieve in this scenario? (Choose two.)
- A. It helps in migrating to future multi-area OSPF network designs.
- B. It reduced the routing table size, enabling devices to store and process less information.
- C. It provides optimal routing in the network.
- D. It reduces the impact of topology changes on a device.
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 # 42
You are asked to establish interface level authentication for users connecting to your network.
You must ensure that only corporate devices, identified by MAC addresses, are allowed to connect and authenticate. Authentication must be handled by a centralized server to increase scalability. Which authentication method would satisfy this requirement?
- A. 802.1X with multiple supplicant mode
- B. MAC RADIUS
- C. captive portal
- D. 802.1X with single-secure supplicant mode
Answer: B
NEW QUESTION # 43
Which address range is used for source-specific multicast?
- A. 239.0.0.0/8
- B. 232.0.0.0/8
- C. 233.0.0.0/8
- D. 224.2.0.0/16
Answer: B
Explanation:
PIM SSM introduces new terms for many of the concepts in PIM sparse mode. PIM SSM can technically be used in the entire 224/4 multicast address range, although PIM SSM operation is guaranteed only in the 232/8 range (232.0.0/24 is reserved). The new SSM terms are appropriate for Internet video applications and are summarized in Table 1. https://www.juniper.net/documentation/us/en/software/junos/multicast/topics/concept/multicast-pim-ssm.html
NEW QUESTION # 44
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. When enabled, a captive portal must be applied to each individual interface.
- C. All Web browser requests are redirected to the captive portal until authentication is successful.
- D. HTTPS is the default protocol for a captive portal.
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 # 45
What are two supported PoE management modes? (Choose two.)
- A. mixed
- B. static
- C. class
- D. standalone
Answer: B,C
NEW QUESTION # 46
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 family inet filter ingress
User@host # set term 3 then next - 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 protocol tcp - D. [edit firewall family inet filter ingress
User@host # set term 2 from service-filter hit
Answer: B
NEW QUESTION # 47
You are deploying IP phones in your enterprise network that must receive their power through their Ethernet connection. You are using your EX Series switch's PoE ports that support IEEE 802.3af.
In this scenario, what is the maximum amount of power allocated to each interface?
- A. 50 W
- B. 30 W
- C. 10.2 W
- D. 15.4 W
Answer: D
NEW QUESTION # 48
You are deploying IP phones in your enterprise network that must receive their power through their Ethernet connection. You are using your EX Series switch's PoE ports that support IEEE
802.3af. In this scenario, what is the maximum amount of power allocated to each interface?
- A. 50 W
- B. 30 W
- C. 10.2 W
- D. 15.4 W
Answer: D
NEW QUESTION # 49
Referring to the exhibit, which statement is correct when a failure exists on the link between host2 and switch5 on this EVPN-VXLAN fabric?
- A. The switch5 device will send a Type 4 route to all peers.
- B. The switch5 device will send a Type 1 route to all peers.
- C. The switch5 device will send a Type 2 route to all peers.
- D. The switch5 device will send a Type 3 route to all peers.
Answer: D
NEW QUESTION # 50
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 a route reflector for the VPN NLRI.
- B. Configure an import policy on the remote peer to reject the routes when they are received.
- C. Configure an export policy on the local BGP peer to reject the VPN routes being sent to the remote peer.
- D. Configure the apply-vpn-export feature on the local BGP peer.
Answer: C,D
Explanation:
Apply both the VRF export and BGP group or neighbor export policies (VRF first, then BGP) before routes from the vrf or l2vpn routing tables are advertised to other PE routers.
https://www.juniper.net/documentation/us/en/software/junos/bgp/topics/ref/statement/vpn-apply-export-edit-protocols-bgp-vp.html
NEW QUESTION # 51
You ate 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 onR2to assign a lower origin value to routes advertised to ISP B.
- C. Apply a BGP export policy to R2 to prepend [65001 65001 65001 65001 65001] to the AS path of routes advertised to ISP B.
- D. Apply a BGP export policy on R1 to assign a lower MED value to routes advertised to ISP A.
Answer: C
NEW QUESTION # 52
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