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NEW QUESTION # 48
You recently implemented the configurations shown in the exhibit. After committing these changes, the community devices connected to AS-1 are not able to communication with the appropriate community devices connected to AS-2.
What must be to allow these community devices to communicate?
- A. You must configure the ge-0/0/1 interface on both switches the inter-switch links.
- B. You must configure to allow the ge-0/0/1 interface on AS-1 as the inter-switch.
- C. You must configure an isolation VLAN ID under the vlan-pri VLAN on both switches.
- D. You must configure an isolation VLAN ID under the vlan-pri vlan on the AS-2 switch.
- E. You must configure the ge-0/0/10 interface on AS-1 as the inter-switch link.
Answer: A
NEW QUESTION # 49
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. 30 W
- B. 50 W
- C. 10.2 W
- D. 15.4 W
Answer: D
NEW QUESTION # 50
Referring to the configuration shown in the exhibit, how many of the routes received from 10.0.0.2 will be active in the routing table?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
NEW QUESTION # 51
You are deploying an 802.1X solution and must determine what would happen if clients are unable to re-authenticate to the RADIUS server.
In this scenario, which configuration would provide access to the network if the supplicant is already authenticated?
- A. permit
- B. sustain
- C. deny
- D. move
Answer: B
NEW QUESTION # 52
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 because the next hop is not reachable.
- B. The IBGP routes will not be advertised because you must use a policy to advertise IBGP routes.
- C. The IBGP routes will not be advertised because the AS path shows as incomplete.
- D. The IBGP routes are not active and EBGP will advertise only active routes.
Answer: D
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 # 53
Which protocol allows a switch to pass configuration information to an IP phone?
- A. IPv6
- B. VCCP
- C. BFD
- D. LLDP-MED
Answer: D
NEW QUESTION # 54
A modified deficit round-robin scheduler is defined by which three variables? (Choose three.)
- A. Layer 3 fields
- B. buffer size
- C. transmit rate
- D. WRED
- E. priority
Answer: B,C,E
Explanation:
A modified deficit round-robin (MDRR) scheduler is defined by the following three variables:
* Priority (A):
* Priority determines the importance of the queue, influencing the order in which packets are serviced. Higher priority queues are serviced before lower priority queues.
* Transmit rate (C):
* The transmit rate controls the amount of bandwidth allocated to each queue. It determines how quickly packets from a queue can be transmitted.
* Buffer size (E):
* Buffer size defines the amount of memory allocated to each queue for storing packets before they are transmitted. Larger buffer sizes can accommodate more packets but may introduce more latency.
References:
* Detailed information on MDRR and its variables can be found in Juniper's QoS configuration guides and related networking documents.
NEW QUESTION # 55
You must provide network connectivity to hosts that fail authentication.
In this scenario, what would be used in a network secured with 802.1X to satisfy this requirement?
- A. Use the server-reject-vlan command to specify a guest VLAN.
- B. Configure the native-vlan-id parameter on the port.
- C. Configure a secondary IP address on the port for unauthenticated hosts.
- D. Configure the port as a spanning tree edge port.
Answer: A
Explanation:
* Understanding 802.1X Authentication:
* 802.1X is a network access control protocol that restricts access until the device or user is authenticated.
* Guest VLAN Configuration:
* When hosts fail authentication, they need to be placed in a separate VLAN to provide limited network access.
* server-reject-vlan Command:
* This command configures a VLAN for unauthenticated devices.
* Ensures that devices that fail authentication are placed in a designated guest VLAN.
* Configuration Example:
shell
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set protocols dot1x authenticator interface ge-0/0/1.0 server-reject-vlan guest-vlan References:
* Juniper 802.1X Authentication Configuration Guide
* Juniper Guest VLAN Configuration
NEW QUESTION # 56
Referring to the exhibit, which two statements are correct? (Choose two.)
- A. The BGP neighbor can advertise L3 VPN related routes.
- B. The BGP neighbor can advertise EVPN related routes.
- C. The BGP neighbor cannot advertise L3 VPN related routes.
- D. The BGP neighbor cannot advertise EVPN related routes.
Answer: A,B
NEW QUESTION # 57
Your EX Series switch has IP telephones and computers connected to a single switch port. You are considering implementing the voice VLAN feature to help with this setup. In this scenario, which two statements are correct? (Choose two.)
- A. The voice VLAN feature will enable incoming tagged data and voice traffic to be associated with separate VLANs.
- B. Assigning the incoming voice and data traffic to separate VLANs enables the ability to prioritize the traffic using CoS.
- C. The interfaces must be configured as access ports.
- D. The voice VLAN feature must be used with LLDP-MED to associate VLAN ID and 802.1p values with the traffic.
Answer: C,D
Explanation:
EX Series switches can accommodate an IP telephone and end host connected to a single switch port. In such a scenario, voice and data traffic must be separated into different broadcast domains, or VLANs. One method for accomplishing this is by configuring a voice VLAN, which enables access ports to accept untagged data traffic as well as tagged voice traffic from IP phones, and associate each type of traffic with separate and distinct VLANs. Voice traffic (tagged) can then be treated differently, generally with a higher priority than data traffic (untagged).
NEW QUESTION # 58
In OSPF, how does a router ensure that LSAs advertised to a neighboring router are received?
- A. LSAs are acknowledged by the neighboring router.
- B. LSAs are sent over a TCP connection.
- C. LSAs are advertised with an acknowledgement bit.
- D. LSA flooding guarantees that all routers will receive them successfully.
Answer: A
Explanation:
Link-state acknowledgment (LSAck)messages provide reliability to the link-state exchange process, by explicitly acknowledging receipt of a Link State Update message. The LSA acknowledgment, explicitly acknowledged, that it have received a LSA, by mirroring it back.
NEW QUESTION # 59
Which two statements about BGP communities are true? (Choose two.)
- A. A prefix can belong to more than community.
- B. A BGP device can set, append, or modify the community of a route.
- C. A community is not a transitive attribute.
- D. A prefix can only belong to one community.
Answer: B,D
NEW QUESTION # 60
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. Verify that the same ESI is configured on the link from the host and that it matches the source.
- B. Issue the show route table bgp.evpn.0 command on Leaf2 and verify that Type 4 routes are present.
- C. Issue the show route table bgp.evpn.0 command on Leaf2 and verify that Type 3 routes are present.
- D. Verify that the same ESI is configured on the two links from the source.
Answer: B,C
Explanation:
When troubleshooting an EVPN-VXLAN IP fabric loop, the following steps are crucial:
* Issue the show route table bgp.evpn.0 command on Leaf2 and verify that Type 4 routes are present: Type 4 routes indicate EVPN Ethernet Segment routes, which are essential for detecting and
* mitigating loops.
* Issue the show route table bgp.evpn.0 command on Leaf2 and verify that Type 3 routes are present: Type 3 routes (Inclusive Multicast Ethernet Tag routes) ensure that multicast and broadcast traffic is properly handled, helping identify and troubleshoot loop issues.
References:
* The commands for verifying BGP EVPN routes are standard in troubleshooting EVPN-VXLAN fabrics.
* Documentation from "Useful Juniper Commands.txt" and "Juniper Commands.pdf" which provide command references for verifying EVPN route types.
NEW QUESTION # 61
Referring to the exhibit, how will router E quickly learn that the remote MAC addresses are no longer reachable through the router attached to the failed link?
- A. Router E receives Type 1 withdrawal messages from router C.
- B. Router E receives Type 2 withdrawal messages from router D.
- C. Router E receives Type 1 withdrawal messages from router D.
- D. Router E receives Type 2 withdrawal messages from router C.
Answer: C
NEW QUESTION # 62
Which two multicast listener registration protocols are supported in the Junos operating system? (Choose two.)
- A. MLD
- B. IGMP
- C. PIM
- D. DVMRP
Answer: A,B
Explanation:
* Understanding Multicast Listener Registration Protocols:
* Multicast listener registration protocols are used to manage multicast group memberships on a network.
* They allow devices to join or leave multicast groups dynamically.
* Protocols Supported by Junos:
* MLD (Multicast Listener Discovery):
* Used for IPv6 multicast group management. It is the IPv6 equivalent of IGMP.
* MLD allows routers to discover multicast listeners on a network.
* IGMP (Internet Group Management Protocol):
* Used for IPv4 multicast group management.
* IGMP enables hosts to join and leave multicast groups and allows routers to manage multicast group memberships.
* Verification and Configuration in Junos:
* MLD and IGMP are supported on Juniper devices running the Junos operating system.
* Configuration examples:
* IGMP:
shell
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set protocols igmp interface ge-0/0/1.0
* MLD:
shell
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set protocols mld interface ge-0/0/1.0
References:
* Juniper IGMP Configuration Guide
* Juniper MLD Configuration Guide
NEW QUESTION # 63
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. Apply the rate-limit-ef policer to all ge-interfaces.
- C. Modify the BA classifier to assign code point 101111 to loss priority low.
- D. Remove the BA classifier from all ge-interfaces.
Answer: B
NEW QUESTION # 64
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 authenticator will send EAP messages until it reaches a predefined, after which it begins to forward traffic.
- D. By default, the supplicant will send EAP messages until it reaches a predefined limit, after which it begins to forward traffic.
Answer: D
NEW QUESTION # 65
BGP multipath or multihop are not configured in your network. In this scenario, what is the correct sequence for BGP active route selection?
- A. higher local preference
shortest AS path
lowest router ID
lowest peer address
lower origin code - B. higher local preference
shortest AS path
lowest peer address
lowest router ID
lower origin code - C. higher local preference
lowest router ID
lowest peer address
lower origin code
shortest AS path - D. higher local preference
shortest AS path
lower origin code
lowest router ID
lowest peer address
Answer: A
NEW QUESTION # 66
Which address range is used for source-specific multicast?
- A. 224.2.0.0/16
- B. 233.0.0.0/8
- C. 232.0.0.0/8
- D. 239.0.0.0/8
Answer: C
Explanation:
The address range 232.0.0.0/8 is reserved for Source-Specific Multicast (SSM). This range is specifically allocated for SSM where data is sent from a specific source to the receivers.
References:
* Source-Specific Multicast (SSM) Overview, RFC 4607
NEW QUESTION # 67
Which type of BGP is used to peer with a different autonomous system?
- A. classless
- B. dynamic
- C. static
- D. external
Answer: D
NEW QUESTION # 68
You are deploying IP phones in your enterprise networks. When plugged in, the IP phones must automatically negotiate the power requirements for the new connection with the EX Series switches.
In this scenario, which protocol should be used to enable this behavior?
- A. LLDP
- B. MP-BGP
- C. CDP
- D. LLDP-MED
Answer: D
Explanation:
LLDP-MED (Link Layer Discovery Protocol-Media Endpoint Discovery) is an extension of LLDP (Link Layer Discovery Protocol) that provides additional functionalities specifically for voice over IP (VoIP) devices, including automatic negotiation of power requirements. This protocol is essential for automatically negotiating power with IP phones when they are connected to EX Series switches.
Steps:
* Enable LLDP-MED:
set protocols lldp-med
* Configure LLDP-MED on the interfaces:
set interfaces ge-0/0/0 unit 0 family ethernet-switching port-mode access set interfaces ge-0/0/0 unit 0 family ethernet-switching interface-mode access set interfaces ge-0/0/0 unit 0 family ethernet-switching vlan members default set interfaces ge-0/0/0 unit 0 family ethernet-switching storm-control default
* Commit the configuration:
References:
* Useful Juniper Commands.txt
* Tech Ops Managed Router Juniper Install Guide
NEW QUESTION # 69
You are asked to implement fault tolerant RPs in your multicast network.
Which two solutions would accomplish this behavior? (Choose two.)
- A. Use BFD with statically defined RPs.
- B. Use IGMPv3 with statically defined RPs.
- C. Use anycast PIM with statically defined RPs.
- D. Use MSDP with statically defined RPs.
Answer: C,D
Explanation:
To implement fault-tolerant RPs (Rendezvous Points) in a multicast network, the following two solutions are appropriate:
* Use MSDP with statically defined RPs:
* MSDP (Multicast Source Discovery Protocol) is used to share multicast source information between multiple RPs in different domains or within the same domain. It allows for RP redundancy by ensuring that if one RP fails, another RP can take over the role and continue to manage multicast group memberships.
NEW QUESTION # 70
You are deploying new Juniper EX Series switches in a network that currently is using Cisco's Per- VLAN spanning tree plus (PVST+) and you must provide compatibility with this environment.
Which spanning tree protocol do you deploy in this scenario?
- A. STP
- B. MSTP
- C. VSTP
- D. RSTP
Answer: B
NEW QUESTION # 71
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