Juniper JN0-648 Online Practice Questions and Exam Preparation

Juniper JN0-648 Online Questions & Answers

• Question 31:

  Which two statements about BGP communities are true? (Choose two.)

  A. A community is not a transitive attribute.
  B. A prefix can only belong to one community.
  C. A BGP device can set, append, or modify the community of a route.
  D. A prefix can belong to more than one community.
  C. A BGP device can set, append, or modify the community of a route.
  D. A prefix can belong to more than one community.

• Question 32:

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

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

• Question 33:

  Click the Exhibit button.

  

  You have configured and applied the policer shown in the exhibit to your Junos device. Which statement is true in this scenario?

  A. Traffic exceeding the committed-burst size will be marked with a loss priority of high.
  B. Traffic exceeding the excess-burst size will be discarded.
  C. Traffic exceeding the committed-information-rate will be rate limited.
  D. Traffic exceeding the committed-burst size will be discarded.
  A. Traffic exceeding the committed-burst size will be marked with a loss priority of high.

• Question 34:

  You are implementing a single spanning tree instance in your network and want to use the protocol that will give you the best convergence time in the event of a physical network failure of the root bridge. Which spanning tree protocol will satisfy this requirement?

  A. RSTP
  B. STP
  C. MSTP
  D. VSTP
  A. RSTP

• Question 35:

  What are two supported PoE management modes? (Choose two.)

  A. class
  B. standalone
  C. static
  D. mixed
  A. class
  C. static

• Question 36:

  Click the Exhibit button.

  

  Referring to the exhibit, which two statements are true regarding Q-in-Q tunneling? (Choose two.)

  A. The C-VLAN traffic will be encapsulated with an outer VLAN tag of 150.
  B. The C-VLANs 100-200 will be sent as the inner VLAN tag.
  C. The C-VLAN 150 will be sent as the inner VLAN tag.
  D. The C-VLAN traffic will be encapsulated with an outer VLAN tag of 10.
  B. The C-VLANs 100-200 will be sent as the inner VLAN tag.
  D. The C-VLAN traffic will be encapsulated with an outer VLAN tag of 10.

• Question 37:

  You are deploying IP phones to a customer site. The IP phones will be installed to share a common access port with the user's desktop computer. You are required to provide a mechanism to place user data traffic and voice traffic in different VLANs for class-of-service application.

  How would you implement this solution?

  A. Configure flexible VLAN tagging on the user ports with the data and voice VLANs as members.
  B. Apply a multifield classifier on the access ports that assigns voice packets to the assured-forwarding class, based on the IP phone manufacturer's MAC OUI.
  C. Configure the IP phones to label voice traffic with the DSCP of code point and apply a BA classifier to the access ports to classify voice traffic.
  D. Configure VLAN tagging on the IP phones and use the voice VLAN feature on the access ports to assign tagged frames to the voice VLAN and untagged frames to a data VLAN.
  D. Configure VLAN tagging on the IP phones and use the voice VLAN feature on the access ports to assign tagged frames to the voice VLAN and untagged frames to a data VLAN.

• Question 38:

  Click the Exhibit button.

  

  You are 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 to R2 to prepend [65001 65001 65001 65001 65001] to the AS path of routes advertised to ISP B
  B. Apply a BGP export policy on R1 to assign a lower MED value to routes advertised to ISP A
  C. Apply a BGP export policy on R2 to assign a lower origin value to routes advertised to ISP B
  D. Apply a BGP export policy on R1 to assign a higher local preference value to routes advertised to ISP A
  A. Apply a BGP export policy to R2 to prepend [65001 65001 65001 65001 65001] to the AS path of routes advertised to ISP B

• Question 39:

  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
  B. revision level
  C. MSTI-to-VLAN mapping
  D. configuration name

• Question 40:

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