JN0-348 Online Practice Questions and Answers

What are two benefits of 802.3ad link aggregation? (Choose two.)

A. It increases bandwidth.

B. It ensures symmetrical paths.

C. It simplifies interface configuration.

D. It creates physical layer redundancy.

Which statement is true about IP-IP tunnels?

A. Intermediate devices must have a route to the destination address of the traffic being tunneled.

B. Intermediate devices must have a route to both the tunnel source address and the tunnel destination address.

C. Intermediate devices must have a route to the tunnel destination address but do not require a route to the tunnel source address.

D. Intermediate devices must have a route to the tunnel source address but do not require a route to the tunnel destination address.

What are two reasons for configuring more than one VLAN on a switch? (Choose two.)

A. A group of clients requires that security be applied to traffic entering or exiting the group's devices.

B. A group of devices must forward traffic across a WAN.

C. A group of devices are connected to the same Layer 3 network.

D. A group of clients requires that the group's devices receive less broadcast traffic than they are currently receiving.

You have configured the router with an IS-IS interface metric of 2048. However, the IS-IS interface metric of 63 is being applied for the interface of this router.

What must you do to enable the larger metric value?

A. Enable wide metrics.

B. Disable narrow metrics.

C. Restart the IS-IS protocol.

D. Enable level 1 IS-IS routing.

Which two OSPF header fields must match to form an adjacency over a broadcast connection? (Choose two.)

A. router priority

B. options

C. hello interval

D. neighbor

Your network connections to the Internet through two different ISPs using EBGP. You must ensure that ISP1 is the primary path used for all traffic entering your network while using ISP2 as a backup path.

In this scenario, which statement is correct?

A. You should use a lower MED value on routes sent to ISP1.

B. You should assign a higher local preference on routes that you are sending to ISP1.

C. You should change the next hop for all routers sent to ISP2.

D. You should prepend your local AS number three times on routes that you are sending to ISP2.

Click the Exhibit button.

Which statement is correct about the ISO NET address shown in the exhibit?

A. The system identifier is 6800.1001.00

B. The area identifier is 0001

C. The authority and format identifier (AFI) is 00

D. This is not a valid NET address

Click the Exhibit button.

Referring to the output shown in the exhibit, which statement is correct?

A. 11.0.0.108/32 is being per-flow load-balanced

B. 11.0.0.102/32 is being per-packet load-balanced

C. 11.0.0.102/32 is being per-flow load-balanced

D. 11.0.0.108/32 is being per-packet load-balanced

Which OSPF packet type is sent when an OSPF router detects its database is stale?

A. database description

B. link-state acknowledgment

C. link-state request

D. hello

What are two interarea OSPF LSA types? (Choose two.)

A. Type 1 router LSAs

B. Type 3 summary LSAs

C. Type 4 ASBR summary LSAs

D. Type 2 network LSAs

You want to use filter-based forwarding (FBF) to forward traffic sourced from subnet 10.0.0.0/24 to a specific destination.

Which two routing instance types would enable you to accomplish this task? (Choose two.)

A. virtual switch

B. virtual routing and forwarding

C. virtual router

D. forwarding

How many bytes of overhead forms an IP-IP tunnel add to a packet?

A. 20 bytes

B. 24 bytes

C. 28 bytes

D. 14 bytes

Click the Exhibit button.

A number of reports from end users indicate that internal and external communications are intermittent and not reliable. You verified the status of the switch ports and have determined that they are up and operational. You also noticed a very high level of link bandwidth utilization on those same ports. The current topology of the affected environment is shown in the exhibit.

What would be the cause of the reported issues?

A. A misconfigured interior gateway protocol (IGP).

B. A lack of a loop-prevention mechanism or protocol.

C. A lack of port-based ACLs filtering the traffic flows.

D. A malformed route-based ACL improperly filtering traffic flows.

Which statement about configuring persistent MAC learning is correct?

A. Persistent MAC learning requires 802.1X authentication.

B. Persistent MAC learning can be configured on access mode interfaces.

C. Persistent MAC learning flushes dynamically learned MAC addresses on reboots.

D. Persistent MAC learning cannot be configured on redundant trunk groups.

Click the Exhibit button.

Your switches are managed using Junos Space Network Director. You want to secure the switches using a Network Director filter profile. A filter profile containing one term shown in the exhibit is deployed to ports on managed devices.

Which traffic will be accepted by the filter?

A. All traffic will be accepted.

B. Traffic containing a source MAC of 02:85:05:00:00:00/24 will be accepted.

C. Traffic containing a destination MAC of 02:85:05:00:00:00/24 will be accepted.

D. No traffic will be accepted.