JN0-648 Online Practice Questions and Answers

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 2

B. Type 3

C. Type 1

D. Type 5

You have an IPv4 multicast network configured as PIM-SM.

What must be done before replacing your static RP with auto-RP?

A. Enable sparse-dense mode on each of the routers in the network.

B. Configure auto-RP domains on each router in the network.

C. Configure each router in the network as a candidate BSR.

D. Enable each router in the network to forward multicast packets.

Click the Exhibit button.

Referring to the exhibit, which TTL value will be sent to the LLDP neighbors?

A. 120 seconds B. 400 seconds

C. 90 seconds

D. 200 seconds

Click the Exhibit button.

Referring to the exhibit, which two statements are true? (Choose two.)

A. There can be more than one OSPF neighbor on the ge-0/0/1 interface.

B. There can be more than one OSPF neighbor on the ge-0/0/0 interface.

C. There is no need for a DR for the ge-0/0/0 interface.

D. The DR election process is not finished for the ge-0/0/0 interface.

Which protocol is used for port-level access control and authentication?

A. MD5

B. IPsec

C. 802.1X

D. AES

Click the Exhibit button.

Referring to the exhibit, a PIM-SM network is set up to enable communication between multicast devices. Which statement is true in this scenario?

A. After the formation of the shortest-path tree, a prune message is sent from R1 to R5.

B. After the formation of the shortest-path tree, a prune message is sent from R1 to R2.

C. After the formation of the shortest-path tree, a join message is sent from R5 to R1.

D. After the formation of the shortest-path tree, a join message is sent from R1 to R5.

Your network is configured for EVPN load balancing on three different access switches. During an outage, you notice that not all interfaces are receiving traffic as expected.

Which two requirements would you validate to identify this problem? (Choose two.)

A. Validate that the same esi value is configured on multiple interfaces on all switches.

B. Validate that the all-active flag is configured for multiple interfaces on each switch.

C. Validate that all-active is configured for only one interface per switch.

D. Validate that the same esi value is only configured on one interface per switch.

Click the Exhibit button.

You are authenticating user devices connected to your EX Series switch. You have 802.1X and MAC RADIUS configured for all ports. A user is complaining about the time it takes to connect their non-802.1X device on ge-0/0/15 using MAC RADIUS authentication.

Referring to the exhibit, what should be done to accelerate the authentication process?

A. Configure the restrict feature for MAC RADIUS on ge-0/0/15.

B. Configure the no-reauthenticationfeature for 802.1X on ge-0/0/15.

C. Change the 802.1X retry attempts value to 5 on ge-0/0/15.

D. Change the supplicant mode to multipleon ge-0/0/15.

You are enabling MSTP in your Layer 2 network to prevent loops.

In this scenario, which three parameters must match on all switches in the network? (Choose three.)

A. bridge priority

B. revision level

C. MSTI-to-VLAN mapping

D. configuration name

E. max age

Which EVPN route type is used for fast convergence and for advertising the split horizon label?

A. Type 4

B. Type 2

C. Type 5

D. Type 1