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Cisco 300-420 Exam Questions - 1 year of Free Updates

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Cisco Designing Cisco Enterprise Networks Sample Questions (Q261-Q266):

NEW QUESTION # 261
Refer to the exhibit.

An engineer must optimize the traffic flow of the network. Which change provides a more efficient design between the access and the distribution layer?

A. Reconfigure the distribution switch A to become the HSRP Active
B. Change the link between distribution switch A and distribution switch B to be a routed link
C. Add a link between access switch A and access switch B
D. Create an EtherChannel link between distribution switch A and distribution switch B

Answer: A

NEW QUESTION # 262
Which feature provides the capability for intra-VN traffic filtering and control within the Cisco SD- Access architecture?

A. scalable groups
B. service policy
C. prefix list
D. MAC ACL

Answer: A

NEW QUESTION # 263
How is internet access provided to a WAN edge router that is connected to a MPLS transport link?

A. An extranet must be provided in the MPLS transport network to allow private traffic to reach the public internet
B. TLOC extensions are used to route traffic to a WAN Edge router that is connected to the Internet transport network
C. OMP advertises a default route from a WAN Edge router that is connected to the MPLS and internet transport networks
D. Internet access must be provided at the WAN Edge router through either a 4G/5G link or local Internet circuit

Answer: B

NEW QUESTION # 264
Which of the following features does GLBP provide, but not HSRP and VRRP? (Choose all that apply.)

A. Support for single active router
B. Support for interface tracking
C. Support for multiple gateways
D. Support for automatic load balancing

Answer: C,D

Explanation:
Support for automatic load balancing and support for multiple gateways are two features that are provided by Gateway Load Balancing Protocol (GLBP) but not by Hot Standby Routing Protocol (HSRP) or Virtual Router Redundancy Protocol (VRRP).
GLBP, HSRP, and VRRP provide a redundant and fault-tolerant solution in case of first-hop router failure in a network. The basic operation of these three protocols is the same. In all three protocols, a group of routers on the same LAN is formed. One of the routers is selected as the active router and another as the standby router.
The router with the highest priority is automatically selected as the active router. If the active router fails, the standby router assumes the responsibilities of the active router. The role of the active router is to forward the packets from the hosts to the virtual router (default gateway).
GLBP provides automatic load balancing between multiple routers by configuring multiple MAC addresses but a single virtual IP address. Every active virtual forwarder (AVF) in the group is configured with the virtual IP address but with different MAC addresses. All such AVFs can then participate in the packet-forwarding process. Multiple gateways then can share the load. On the contrary, HSRP and VRRP do not support automatic load balancing. Both these protocols require additional configuration on all the routers that need to load balance. The additional configuration involves using multiple groups on the routers or assignment of different default gateways for the hosts.
Note that GLBP and VRRP are supported by both Cisco and non-Cisco routers, whereas, HSRP is supported only by Cisco routers.
Single active router and interface tracking both are supported by GLBP, HSRP, and VRRP.
Objective:
Infrastructure Services
Sub-Objective:
Configure and verify first-hop redundancy protocols
References:
Home > End-of-Sale and End-of-Life Products > Cisco IOS Software Releases 12.2.T > Product Literature > White Papers > GLBP Gateway Load Balancing Protocol > Information About Gateway Load Balancing Protocol Home > Support > Technology Support > IP > IP Application Services > Design > Design Technotes > Hot Standby Router Protocol Features and Functionality > HSRP Background and Operations > HSRP Operation

NEW QUESTION # 265
A branch office has a primary L3VPN MPLS connection back to the main office and an IPSEC VPN tunnel that serves as backup. Which design ensures that data is sent over the backup connection only if the primary MPLS circuit is down?

A. Use BGP with the multipath feature enabled to force traffic via the primary path when available.
B. L3VPN MPLS and the IPSEC VPN tunnel.
C. Use EIGRP to establish a neighbor relationship with the main office via
D. Use OSPF with a passive-interface command on the backup connection.
E. Use static routes tied to an IP SLA to prefer the primary path while a floating static route points to the backup connection.

Answer: E

NEW QUESTION # 266
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