300-320 | 10 Tips For Rebirth 300-320 vce

Question No: 6

In what situation must spanning-tree be implemented?

A. when first hop redundancy protocol exists with redundant Layer 2 links between distribution switches

B. when a VLAN spans access layer switches to support business applications

C. when trunks need to extend multiple VLANs across access switches

D. when it is necessary to speed up network convergence in case of link failure

Answer: A

Explanation:

STP (L2 loop prevention mechanism) should be implemented in topologies where possible loops may occur and redundant L2 links between distribution switches is a very good example as long as the links are not channelled (PC, vPC, MEC).

Question No: 7

What security feature would require a packet to be received on the interface that the interface would use to forward the return packet?

A. urpf

B. arp inspection

C. vlan acl

D. u2026

Answer: A

Question No: 8

What QoS technology allows traffic to pass even though it has exceeded the bandwidth limit but will be queued later?

A. Shaping

B. Policing

C. Weighted Fair Queuing

D. Low Latency Queuing

Answer: A

Question No: 9

Which two options regarding the Cisco TrustSec Security Group Tag are true? (Choose Two.)

A. It is assigned by the Cisco ISE to the user or endpoint session upon login

B. Best practice dictates it should be statically created on the switch

C. It is removed by the Cisco ISE before reaching the endpoint.

D. Best Practice dictates that deployments should include a guest group allowing access to minimal services

E. Best Practice dictates that deployments should include a security group for common services such as DNS and DHCP

Answer: A,E

Question No: 10

You need to use source specific multicast, which addressing should you use ?

A. 224.0.0.0/8

B. 232.0.0.0/8

C. 248.0.0.0/8

D. 254.0.0.0/8

E. 242.0.0.0/8

Answer: B

Question No: 11

A BGP network is having difficulty scaling with the full mesh peer requirement. What two iBGP alternates can scale BGP appropriately? (Choose two.)

A. communities

B. route reflectors

C. confederations

D. peer groups

E. peer templates

Answer: B,C

Question No: 12

Which Routing protocol that provides unequal cost path with different metrics for load balancing purpose

A. Ospf

B. Eigrp

C. ISIS

D. BGP

E. RIP

Answer: B

Explanation: Traffic Sharing

EIGRP not only provides unequal cost path load balancing, but also intelligent load balancing, such as traffic sharing. In order to control how traffic is distributed among routes when there are multiple routes for the same destination network that have different costs, use the traffic-share balanced command. With the keywordbalanced, the router distributes traffic proportionately to the ratios of the metrics that are associated with different routes.

Question No: 13

A network design engineer has been asked to reduce the size of the SPT on an IS-IS broadcast network.

Which option should the engineer recommend to accomplish this task?

A. Configure the links as point-to-multipoint.

B. Configure QoS in all links.

C. Configure a new NET address.

D. Configure the links as point-to-point.

Answer: D

Question No: 14

Which two of these are recommended practices with trunks? (Choose two.)

A. use ISL encapsulation

B. use 802.1q encapsulation

C. set ISL to desirable and auto with encapsulation negotiate to support ISL protocol negotiation

D. use VTP server mode to support dynamic propagation of VLAN information across the network

E. set DTP to desirable and desirable with encapsulation negotiate to support DTP protocol negotiation.

Answer: B,E

Explanation:

"As a recommended practice, when configuring switch-to-switch interconnections to carry multiple VLANs,set Dynamic Trunking Protocol (DTP) to Desirable and Desirable with Encapsulation Negotiate to support DTP negotiation."

Question No: 15

Two Cisco switches with 1 SUP and many 10G line-card ports for each switch, run in VSS mode. In which case or for what reason you don't connect all VSL to SUP?

A. The need for hardware diversity

B. Bandwidth congestion at SUP

C. In case the sup fail

D. Qos must be configured on both

Answer: A