CCDA 640-864 Q&As – Enterprise Network Virtualization (1-3)

May 2, 2012

Section 9 – Enterprise Network Virtualization

QUESTION 1
Which consideration is the most important for the network designer when considering IP routing?
A.    convergence
B.    scalability
C.    on-demand routing
D.    redistribution
Answer: A
Explanation:
Convergence is most important because with delayed convergence outage recovery will be delayed as well.
Link: http://www.cisco.com/en/US/docs/solutions/Enterprise/Campus/routed-ex.html#wp998414

QUESTION 2
DataQuirk is a web-based medical transcription company for exotic-animal veterinarians. The company recently added a third ISP for international business. They are organizing the enterprise network into a fully operational Enterprise Edge.
To which two modules will the three ISPs be directly related? (Choose two)
A.    PSTN
B.    E- Commerce
C.    WAN/MAN
D.    Edge Distribution
E.    Internet Connectivity
F.    Remote Access VPN
Answer: BE
Explanation:
The purpose of ISP link is for serving customers & it is also providing internet connectivity to internal & external users, thus it falls into above 2 categories.
The Enterprise Edge Module consists of the following modules:
+ E-commerce module: includes the devices and services necessary for an organization to provide e-commerce applications.+ Internet connectivity module: provides enterprise users with Internet access.+ VPN and remote access module: terminates VPN trafc and dial-in connections
from external users.+ WAN/ MAN and site-to-site module: provides connectivity between remote sites and the central site over various WAN technologies. In these modules, only E-Commerce and Internet Connectivity modules will be directly related to the three ISPs.

QUESTION 3
Refer to the exhibit. Model A is the recommended design for routing between Building Distribution switches and Campus Core switches. Which two statements describe the reasons? (Choose two)
A.    Model A uses timer-based non-deterministic convergence.
B.    Mode A uses timer-based, providing fast convergence to the remaining path.
C.    In Model A, a link or box failure does not require routing protocol convergence.
D.    In Model A, the Layer 3 redundant equal cost links support fast convergence.
Answer: CD
Explanation:
Due to redundant links in place the routing protocols can select multiple equal cost paths and installs them as soon as one of the links goes down, such topology also can support load-balancing.

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