2013 Latest Cisco Designing for Cisco Internetwork Solutions Exam DESGN

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2013 Latest Cisco Designing for Cisco Internetwork Solutions Exam DESGN v2.1 640-864 EXAM download 51-55

QUESTION 51
Which one of these statements is true concerning the data center distribution (aggregation) layer design?
A. With Layer 3 at the aggregation layer, the physical loops in the topology must still be managed by STP.
B. The boundary between Layer 2 and Layer 3 must reside in the multilayer switches, independent of any other devices such as firewalls or content switching devices.
C. A mix of both Layer 2 and Layer 3 access is sometimes the most optimal.
D. In a small data center, the aggregation layer can connect directly to the campus core, exchanging IP routes and MAC address tables.
Correct Answer: C
Section: Data Center Explanation

QUESTION 52
When designing the threat detection and mitigation portion for the enterprise data center network, which of the following would be the most appropriate solution to consider?
A. 802.1X
B. ACLs in the core layer
C. Cisco Security MARS
D. Cisco Firewall Services Module
Correct Answer: C
Section: Data Center Explanation

QUESTION 53
A Cisco Self-Defending Network has been installed, but DoS attacks are still being directed at e- commerce hosts. The connection rate at the Internet firewall was limited, but the problem persists. What more can be done?
A. Move the servers to the DMZ.
B. Install all relevant operating system patches.
C. Block the servers’ TCP traffic at the Internet firewall.
D. Block the servers’ UDP traffic at the Internet firewall.
Correct Answer: B
Section: Security Explanation

QUESTION 54
RST Corporation is planning to upgrade its current network. The chief technology officer has supplied a topology diagram and an IP addressing scheme of the current network during an interview.
RST has been growing at about twenty percent per year. It has been difficult to maintain customer support at a satisfactory level. Therefore, the RST board has met with and directed the chief technology officer to look into network improvements.
Which two items are most relevant in documenting RST’s business requirements? (Choose two.)
A. existing network topologies
B. network performance requirements
C. the IP addresses assigned by the ISP
D. improved customer support requirements
E. projected growth estimates Correct Answer: DE

Section: Design Explanation
Growth of applications: Customers continue to ask for new products, service offerings, improved customer service, greater security, and customization flexibilityall at a lower cost.

QUESTION 55
Which two of these best describe the implementation of a WAN Backup design over the Internet? (Choose two.)
A. a best-effort method
B. bandwidth guaranteed based on interface configuration
C. designed as an alternative to a failed WAN connection
D. implemented with a point-to-point logical link using a Layer 2 tunnel
E. requires no ISP coordination or involvement
Correct Answer: AC
Section: WAN VPN Explanation
One of the goals of remote-access network design is to provide a unified solution that allows for seamless connectivity as if the users are on the HQ LAN. The primary function of remote access is to provide your users access to internal resources and applications. Because connection requirements drive the technology selection process, it is important that you analyze the application and network requirements in addition to reviewing the available service provider options.
The following summarizes typical remote-access requirements:

Best-effort interactive and low-volume traffic patterns

Connections to the enterprise edge using Layer 2 WAN technologies (consider capital and recurring costs)

Voice and IPsec VPN support Remote-access network connections are enabled over permanent always-on connections or on-demand connections. Technologies include digital subscriber line (DSL), cable, wireless 802.11 a/b/g/n LAN, and 3G/4G wireless WAN (WWAN). However, these remote-access technologies might or might not be available, so it is best to check the availability for the location in your network design.

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