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QUESTION 45
In a collapsed core design, which three benefits are provided by a second-generation Cisco MDS director? (Choose three.)
A. a higher fan-out ratio
B. fully redundant switches
C. 100 percent port efficiency
D. all ISLs contained within a single chassis
E. higher latency and throughput than a core-edge design switch

Correct Answer: BCD Section: (none) Explanation
Explanation/Reference:
QUESTION 46
Which two statements about both FCIP and iSCSI are correct? (Choose two.)
A. They support file-level storage for remote devices.
B. They require high throughput with low latency and low jitter.
C. Their purpose is to provide connectivity between host and storage.
D. They support block-level storage for remote devices.
E. Their purpose is to provide connectivity between separate wide-area SANs.

Correct Answer: BD Section: (none) Explanation
Explanation/Reference:
QUESTION 47
Which three statements about zoning are correct? (Choose three.)
A. Zoning increases security.
B. DNS queries are used for software zoning.
C. Software zoning is more secure than hardware zoning.
D. When using zones and VSANs together, the zone is created first.
E. Zoning requires that VSANs be established before it becomes operational.

Correct Answer: ABE Section: (none) Explanation
Explanation/Reference:
QUESTION 48
What are two characteristics of Server Load Balancing router mode? (Choose two.)
A. The design supports multiple server subnets.
B. An end-user sees the IP address of the real server. Complete collection of 642-874 Exam’s Question and answers. http://www.braindump2go.com/
C. SLB routes between the outside and inside subnets.
D. The source or destination MAC address is rewritten, but the IP addresses left alone.
E. SLB acts as a “bump in the wire” between servers and upstream firewall or Layer 3 devices.

Correct Answer: AC Section: (none) Explanation
Explanation/Reference:
QUESTION 49
What are two characteristics of Cisco Global Site Selector? (Choose two.)
A. It helps verify end-to-end path availability.
B. It provides traffic rerouting in case of disaster.
C. HSRP, GLBP, and VRRP can be clients of GSS.
D. BGP must be the routing protocol between the distributed data centers.
E. DNS responsiveness is improved by providing centralized domain management.

Correct Answer: BE Section: (none) Explanation
Explanation/Reference:
QUESTION 50
When a router has to make a rate transition from LAN to WAN, what type of congestion needs should be considered in the network design?
A. RX-queue deferred
B. TX-queue deferred
C. RX-queue saturation
D. TX-queue saturation
E. RX-queue starvation
F. TX-queue starvation

Correct Answer: F Section: (none) Explanation
Explanation/Reference:
Complete collection of 642-874 Exam’s Question and answers. http://www.braindump2go.com/
QUESTION 51
Refer to the exhibit. Which recommended practice is applicable?

A. If no core layer is deployed, the design will be easier to scale.
B. A dedicated campus core layer should be deployed for connecting three or more buildings.
C. If no core layer is deployed, the distribution switches should not be fully meshed.
D. A dedicated campus core layer is not needed for connecting fewer than five buildings.

Correct Answer: B Section: (none) Explanation
Explanation/Reference:
QUESTION 52
To which switch or switches should you provide redundant links in order to achieve high availability with reliable fast convergence in the enterprise campus?
A. to a core switch running Cisco NSF and SSO from redundant distribution switches connected with a Layer 2 link
B. to a core switch running Cisco NSF and SSO from redundant distribution switches connected with a Layer 3 link
C. to two core switches from redundant distribution switches connected with a Layer 2 link
D. to two core switches from redundant distribution switches connected with a Layer 3 link
E. to two core switches running Cisco NSF and SSO from two redundant distribution switches running Cisco NSF and SSO

Correct Answer: D Section: (none) Explanation
Explanation/Reference: QUESTION 53
Which of these statements is correct regarding Stateful Switchover and Cisco Nonstop Forwarding?
A. Utilizing Cisco NSF in Layer 2 environments can reduce outages to one to three seconds. Complete collection of 642-874 Exam’s Question and answers. http://www.braindump2go.com/
B. Utilizing SSO in Layer 3 environments can reduce outages to one to three seconds.
C. Distribution switches are single points of failure causing outages for the end devices.
D. Utilizing Cisco NSF and SSO in a Layer 2 environment can reduce outages to less than one second.
E. NSF and SSO with redundant supervisors have the most impact on outages at the access layer.

Correct Answer: E Section: (none) Explanation
Explanation/Reference:
QUESTION 54
When is a first-hop redundancy protocol needed in the distribution layer?
A. when the design implements Layer 2 between the access and distribution blocks
B. when multiple vendor devices need to be supported
C. when preempt tuning of the default gateway is needed
D. when a robust method of backing up the default gateway is needed
E. when the design implements Layer 2 between the access switch and the distribution blocks

Correct Answer: A Section: (none) Explanation
Explanation/Reference:
QUESTION 55
Which of these is a recommended practice with trunks?
A. use ISL encapsulation
B. use 802.1q encapsulation
C. set ISL to desirable and auto with encapsulation negotiate to support ILS protocol negotiation
D. use VTP server mode to support dynamic propagation of VLAN information across the network

Correct Answer: B Section: (none) Explanation
Explanation/Reference:
QUESTION 56
Which of the following is a recommended practice of a data center core?
A. Server-to-server traffic always remains in the core layer.
B. The core infrastructure should be in Layer 3.
C. Core layer should run BGP along with an IGP because iBGP has a lower administrative distance than any IGP.
D. The Cisco Express Forwarding hashing algorithm is the default, based on the IP address and Layer 4 port.

Correct Answer: B Section: (none) Explanation
Explanation/Reference:
QUESTION 57
Which statement about data center access layer design modes is correct?
A. The access layer is the first oversubscription point in a data center design.
B. The data center access layer provides the physical-level connections to the server resources and only operates at Layer 3.
C. When using a Layer 2 looped design, VLANs are not extended into the aggregation layer.
D. When using a Layer 3 design, stateful services requiring Layer 2 connectivity are provisioned from the aggregation layer.

Correct Answer: A Section: (none) Explanation
Explanation/Reference:
Complete collection of 642-874 Exam’s Question and answers. http://www.braindump2go.com/
QUESTION 58
Which two design recommendations are most appropriate when EIGRP is the data center core routing protocol? (Choose two.)
A. Summarize data center subnets.
B. Use passive interfaces to ensure appropriate adjacencies.
C. Tune the EIGRP timers to enable EIGRP to achieve quicker convergence.
D. Adjust the default bandwidth value to ensure proper bandwidth on all links.
E. Advertise a default summary route into the data center core from the aggregation layer.

Correct Answer: AE Section: (none) Explanation
Explanation/Reference:
QUESTION 59
Which two practices will avoid Cisco Express Forwarding polarization?(Choose two.)

A. The core layer should use default Layer 3 hash information.
B. The core layer should use default Layer 4 hash information.
C. The distribution layer should use default Layer 3 hash information.
D. The distribution layer should use default Layer 4 hash information.
E. The core layer should use Layer 3 and Layer 4 information as input to the Cisco Expressing Forwarding hashing algorithm.
F. The distribution layer should use Layer 3 and Layer 4 information as input into the Cisco Expressing Forwarding hashing algorithm.

Correct Answer: AF Section: (none) Explanation
Explanation/Reference:
QUESTION 60
Which two of these are recommended practices with trunks? (Choose two.) Complete collection of 642-874 Exam’s Question and answers.
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A. use ISL encapsulation
B. use 802.1q encapsulation
C. set ISL to desirable and auto with encapsulation negotiate to support ILS 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.

Correct Answer: BE Section: (none) Explanation
Explanation/Reference:
Complete collection of 642-874 Exam’s Question and answers.

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