Ensurepass

QUESTION 91

You are designing a network for a branch office. In order to improve convergence time, you are required to use the BFD feature. Which four routing protocols can you use to facilitate this? (Choose four.)

 

A.

EIGRP

B.

IS-IS

C.

BGP

D.

static

E.

RIP

 

Correct Answer: ABCD

 

 

QUESTION 92

When creating a design plan for IPv6 integration, you decide to use stateless encapsulation of IPv6 packets into IPv4 tunnels between subscriber CPEs and a border relay. Which deployment technique allows for this functionality?

 

A.

6rd

B.

Dual-Stack Lite

C.

4rd

D.

DSTM

 

Correct Answer: A

 

 

QUESTION 93

Refer to the exhibit. An enterprise is migrating its single-area OSPF network from a Frame Relay WAN service to an MPLS L3VPN service. Frame Relay will remain in only a few sites that require increased resiliency via two different WAN connections. Which feature could be used in the MPLS VPN service provider network to support the design requirement by ensuring that during normal operation, intersite traffic will only use the MPLS VPN service and not the old Frame Relay service?

 

clip_image002

 

A.

virtual links

B.

sham links

C.

multiple stub areas

D.

super backbone

 

Correct Answer: B

 

 

QUESTION 94

A network design shows two routers directly connected to an Ethernet switch using optical connections. There is an OSPF adjacency between the routers. In this design, which solution will ensure that interface down detection is reported as quickly as possible to the IGP?

 

A.

optimized OSPF SPF timers

B.

Bidirectional Forwarding Detection

C.

automatic protection switching

D.

optimized OSPF LSA timers

E.

Ethernet OAM CFM monitoring

 

Correct Answer: B

 

 

 

 

 

QUESTION 95

In a large enterprise network with multiple data centers and thousands of access devices, OSPF is becoming unstable due to link flapping. The current design has the access devices multihomed to large aggregation routers at each of the data centers. How would you redesign the network to improve stability?

 

A.

Add a layer of regional Layer 3 aggregation devices, but leave the ABR function on the data center aggregation routers.

B.

Add a layer of regional Layer 2 aggregation devices, but leave the ABR function on the data center aggregation routers.

C.

Add a layer of regional Layer 3 aggregation devices and move the ABR function to the regional aggregation device.

D.

Add a layer of regional Layer 2 aggregation devices and move the ABR function to the regional aggregation device.

 

Correct Answer: C

 

 

QUESTION 96

Refer to the exhibit. Your company designed a network to allow server VLANs in a data center to span all access switches. In the design, Layer 3 VLAN interfaces and HSRP are configured on the aggregation switches. In which three ways should the design of the STP domain be optimized for server and application performance? (Choose three.)

 

clip_image004

 

A.

Use loop guard on access ports.

B.

Use PortFast on access ports.

C.

Use root guard on access ports.

D.

Align Layer 2 and Layer 3 forwarding paths.

E.

Use BPDU Skew Detection on access ports.

F.

Explicitly determine root and backup root bridges.

 

Correct Answer: BDF

 

 

QUESTION 97

You are evaluating convergence characteristics of various interior gateway protocols for a new network design. Which technology allows link-state routing protocols to calculate paths to destination prefixes that are functionally similar to feasible successors in Enhanced Interior Gateway Routing Protocol?

 

A.

Incremental Shortest Path First

B.

Cisco Multiprotocol Label Switching Traffic Engineering Fast Reroute

C.

Loop-Free Alternate Fast Reroute

D.

partial route calculation

E.

Fast-Flooding

 

Correct Answer: C

 

 

QUESTION 98

You are designing a network to support data, voice and video. Which two main factors will you address to improve network convergence? (Choose two.)

 

A.

event propagation delay

B.

failure detection delay

C.

forwarding engine update delay

D.

routing table recalculation delay

 

Correct Answer: BD

 

 

QUESTION 99

A company requests that you consult with them regarding the design of their production, development, and test environments. They indicate that the environments must communicate effectively, but they must be kept separate due to the inherent failures on the development network. What will be configured on the links between the networks to support their design requirements?

 

A.

IBGP

B.

EBGP

C.

OSPF

D.

static routes

 

Correct Answer: B

 

 

 

 

 

 

 

QUESTION 100

A company is planning to connect its 30 sites with a VPLS WAN backbone. A router at each site should establish neighborships with all other routers using the OSPF routing protocol. Which three points must be considered regarding DR and BDR when different router platforms are used? (Choose three.)

 

A.

It is a best practice that the routers with the most powerful hardware should take the role of the DR and BDR.

B.

If the IP OSPF priority is the same for all routers, the highest loopback IP address and router ID will decide which routers will take the DR and BDR role during the selection process.

C.

To select the DR and BDR, the IP OSPF priority must be set to a higher value than the default value at the DR and BDR during the selection process.

D.

To select the DR and BDR, the IP OSPF priority must be set to a lower value than the default value at the DR and BDR during the selection process.

E.

The role for the DR and BDR will be selected when a new OSPF router comes up.

F.

To force two routers to become a DR and a BDR, the IP OSPF priority can be set to zero at all other OSPF routers.

 

Correct Answer: ABF

 

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