JN0-643 Exam Questions

The configuration in the exhibit shows incoming traffic with specific IP precedence bits that should be mapped to a forwarding class named best-effort. {master:0}[edit] user@router...

Based on the exhibit, why is R2 marking the routes coming from AS 200 as hidden?

user@router> show configuration routing-options rib-groups { foo { import-rib [ inet.8 inet.2 inet.0 ]; } } user@router> show configuration protocols pim rib-group inet foo; interf...

Which connection method do OSPF routers use to communicate with each other?

Which statement is true about default BGP route redistribution behavior?

In a PIM-SM network, which type of node helps to build a tree towards an unknown multicast source?

Which statement is true about MVRP?

Referring to the exhibit, your AS is connected to ISP-A and ISP-B using BGP. R1 and R2 are advertising your AS's 172.25/16 prefix upstream to both ISPs, and both ISPs are providing...

R1 is connected to both R2 and R3 and you want to load-balance outbound traffic. You have provided the configuration shown in the exhibit; however, after checking the links you not...

Two routers are joined by redundant BGP connections. You want to load-balance traffic across these links, and have configured the policy shown in the exhibit on each device. [edit...

You are asked to create a BGP routing policy that will delete all communities and reject routes with the community 64321:1234. Which policy will accomplish this task?

Referring to the exhibit, which three actions would summarize these routes to a BGP peer? (Choose three.) user@router>show route advertising-protocol bgp 172.16.36.1 inet.0: 31 des...

AS4 is using the default path to get to AS1. This path is not modified by any of the ASs shown in the exhibit. AS1 wants to influence this path so that traffic from AS4 comes throu...

You are the administrator for the network shown in the exhibit. R1 receives the 196.15.4.0/24 route from routers R2, R3, and R4. Local preference values have not been modified in t...

Referring to the output shown in the exhibit, which three statements are true about the PIM implementation on R1? (Choose three.) user@R1> show pim join extensive InstancE. PIM.mas...

Which two statements are true about the configuration shown below? (Choose two.) [edit routing-options multicast] user@router# show ssm-groups 227.0.0.0/24; asm-override-ssm;

Referring to the exhibit, the RPT from R3 towards R2 is established. What happens if the multicast source connected to R1 starts sending multicast traffic towards R1?

Which two statements are true about MSDP mesh groups? (Choose two.)

Referring to the exhibit, the RPs are set up for anycast. Multicast traffic is currently flowing from the source to the receivers. Which statement is true when RP2 goes down?

Referring to the exhibit, USER1 wants to only receive multicast traffic for group 225.0.0.1 and USER2 wants to only receive multicast traffic for group 225.0.0.2. Both users are co...

Which multicast group is used for all PIM routers?

Which command prevents Layer 2 loops if the switch stops receiving spanning-tree keepalives on port ge-1/0/1?

What are three types of port designation specific to Private VLANs? (Choose three.)

How many networks and how many hosts can you address with a 200.0.0.0/30 address?

In the indirect delivery model, the source station sends an ARP for which of the following?

Which pipe argument is used to find every occurrence of the word error in some file?

Which command allows NTP synchronization without a switch reboot?

You want to alter a serial number to VC role assignment, but after you commit the change, the related VC member does not take on the new role. What may be wrong?

What setting is required on an IOS switch to successfully trunk with an EX?

What is the maximum number of root bridges that can be configured in MSTP?

A RIP route is not displayed with a show route receiving-protocol rip command at one end, yet the remote end shows the route in its show route advertising protocol rip command. Wha...

What kind of filter would be written to protect control traffic destined for the switch?

What BGP attribute is mostly likely to influence a remote AS that you do not peer with?

You were provided a network diagram that told you to number your network from the 191.255.0.0/16 space. OSPF is enabled and adjacencies are up, but no routers are learning any rout...

What types of authentication are supported in Junos for OSPF?

You are asked to reduce broadcast traffic within the switching domain. You want VLAN broadcast traffic to only go to switches that have VLAN members connected to the network. How w...

Referring to the exhibit, which two statements are correct?(choose two)

Which two statements about OSPF external metrics are correct? (Choose two)

Which two statements is true regarding the MED attribute? (Choose two|

Company A, recently acquired company

Which three statements are correct about the PIM output shown in the exhibit (Choose three)?

Referring to the exhibit, all host A has authenticated using 802.1XB. Which supplicant mode IS USED on the switch?

You have certainly implemented the configuration shown in the exhibit. After committing these changes, the community devices connected to AS1 are not able to communicate with the a...

Which statement describes 802 1x supplicant single modes?

The network administrator wants the ports on an EX series switch to allow both tagged and untagged frames to be forwarded. Tagged frames should be associated with their tagged VLAN...

Which protocol is a multicast protocol?

Referring to the exhibit, what must you add to the configuration to allow a receiver connected two interface ge 0/0/6 to subscribe to group 232 0 0 1 from source 172.16.7.1?

You manage your company's enterprise network using EX series switches. Your company wants to use Q in Q tunneling to correct remote customer sites together, which statement is corr...

Referring to the exhibit, OSPF is being used as the IGP and Area 1 is a standard OSPF area. USER 1 is sending traffic to server 1, which path will the traffic take?

Which statement is correct about private VLANs?