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Cisco Designing Cisco Enterprise Networks Sample Questions (Q178-Q183):

NEW QUESTION # 178
Which of the following features does GLBP provide, but not HSRP and VRRP? (Choose all that apply.)

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

Answer: A,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 # 179
A company requires a private WAN design that allows remote sites to connect to HQ. The design must ensure that:
- traffic is always encrypted
- forwarding overhead is reduced
- management of security is centralized
- multicast traffic is supported
Which technology must the company select?

A. DMVPN Phase 3
B. IPsec P2P
C. GET VPN
D. mGRE

Answer: A

NEW QUESTION # 180
Drag and Drop Question
Drag and drop the properties from the left onto the protocols they describe on the right.

Answer:

Explanation:

Explanation:
https://www.cisco.com/c/en/us/td/docs/ios-
xml/ios/prog/configuration/166/b_166_programmability_cg/b_166_programmability_cg_chapter_0
1011.html
https://www.cisco.com/c/en/us/td/docs/ios-
xml/ios/prog/configuration/169/b_169_programmability_cg/ configuring_yang_datamodel.html

NEW QUESTION # 181
Which design consideration must be made when dual vEdge routers are deployed at a branch site?

A. Configure BFD between vEdge routers to detect sub-second link failures.
B. Use BGP AS-path prepending to influence egress traffic and use MED to influence ingress traffic from the branch.
C. HSRP priorities must match the OMP routing policy to prefer one vEdge over the other.
D. Traffic must be symmetrical as it egresses the vEdges and returns from remote sites for DPI to function properly.

Answer: D

Explanation:
For the localized application visibility features (DPI and NBAR2) to be able to classify most application traffic, it is important that the WAN Edge router sees network traffic in both directions.
In dual-WAN Edge sites without any policy enabled, equal cost paths exist over each transport and to each WAN Edge router, and network traffic is hashed depending on fields in the IP header.
Traffic is unlikely to always be forwarded to the same WAN Edge router in both the LAN-to-WAN direction and the WAN-to-LAN direction. To maintain symmetric traffic, it is recommended to set up routing so that traffic prefers one WAN Edge over another at dual-WAN Edge router sites.

NEW QUESTION # 182
A company's branch location uses redundant routers and links for connectivity to the headquarters. Also, to use the entire available bandwidth, the branch uses a dynamic routing protocol. An architect must design a multicast streaming solution to avoid RPF check failures because of the current network design. Which deployment model must the architect choose?

A. PIM-SM
B. PIM-BSR
C. BIDIR-PIM
D. PIM-SSM

Answer: D

NEW QUESTION # 183
......

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