Free Enterprise Routing and Switching, Professional Exam JN0-648 Exam Practice Test

What is the correct authentication processing order on EX Series switches when multiple Layer 2 authentication methods are enabled?

• captive portal-> MAC RADIUS -> 802.1x
• 802.1x-> captive portal -> MAC RADIUS
• MAC RADIUS -> 1x -> captive portal
• 802.1x -> MAC RADIUS -> captive portal

Which two statements are true about IS-IS levels? (Choose two.)

• Level 2 systems do not advertise Level 2 routes into a Level area by default.
• Level 2 systems must use the loopback address as a part of the ISO network address.
• Level 1 system only from adjacencies with other systems that have different area IDs.
• Level 1 systems use a default route to reach AS external routes located in other areas.

Which two statements are true regarding bidirectional PIM? (Choose two )

• It eliminates the need for an RP.
• Devices only store group specific entries.
• It uses multicast tunneling to forward traffic
• Forwarding paths can be suboptimal

What information is contained in an OSPF LSA header? (Choose two.)

• protocol
• options
• length
• subnet mask

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?

• By default, the supplicant will send EAP messages and keep the port in an unauthorized state.
• By default, the authenticator will send EAP messages and keep the port in an unauthorized state.
• By default, the supplicant will send EAP messages until it reaches a predefined limit, after which it begins to forward traffic.
• By default, the authenticator will send EAP messages until it reaches a predefined, after which it begins to forward traffic.

Packets enter a Juniper device and are classified as best effort. During the processing of the packet, the classification of the packets is changed to expedited forwarding by a multi-field classifier. The device is using the default CoS policiesWhich statement is true in this scenario?

• The packet is forwarded according to the new packet classification, and the DSCP bits are rewritten to the new class.
• The packet is forwarded according to the new packet classification, and the DSCP bits do not change.
• The packet is forwarded according to the original packet classification, and the DSCP bits do not change.
• The packet is forwarded according to the original packet classification, and the DSCP bits are rewritten to the new class.

You notice a mass withdrawal of routes for some of the network hosts. You determine that the link on the ESIinterface is down.Which route type is used in this scenario?

• Type 2
• Type 3
• Type 1
• Type 5

You have multiple BGP routes to the same prefix with equal local-preference values and AS-path lengths.In this scenario, which route will be preferred in the route selection process?

• The route with the least preferred origin value.
• The route with the lowest MED value.
• The route with the most preferred origin value.
• The route with the highest MED value.

You must ensure that all management traffic sourced from your Junos devices is set with a specific DSCPcode-point value.Which action will accomplish this task?

• Apply the DSCP code-point to the [edit class-of-service host-outbound-traffic] hierarchy.
• Apply the DSCP code-point to the [edit class-of-service interface lo0.0] hierarchy
• Apply the DSCP code-point in an egress policer.
• Apply the DSCP code-point to a rewrite rule.

You are asked to deploy 802.1X on your EX Series switches. You need to ensure authenticated devicescontinue to have access to the network even if the authentication server fails.Which action meets this configuration objective?

• Configure the server fail fallback with a value of sustain.
• Set the reauthentication interval to a value of 0.
• Configure the static MAC bypass for the authentication server.
• Set the reauthentication interval to a value of disable.