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Category: 642-874 (v.1)

Exam 642-874: Designing Cisco Network Service Architectures (ARCH) v2.1

Which two areas of security would you advise the company to strengthen?

The Schuyler and Livingston Iron Works has been working on getting its network security under
control. It has set up VPN with IPSec links to its suppliers. It has installed network vulnerability
scanners to proactively identify areas of weakness, and it monitors and responds to security
events as they occur. It also employs extensive access control lists, stateful firewall
implementations, and dedicated firewall appliances. The company has been growing very fast
lately and wants to make sure it is up to date on security measures. Which two areas of security
would you advise the company to strengthen? (Choose two.)

Which QoS mechanism can you implement to improve the network response time?

Users at the Charleville Company began experiencing high network delays when Internet

connectivity was enabled for all users. After investigating the traffic flow, you determine that peerto-peer traffic from a music download site is consuming a large amount of bandwidth. Which QoS
mechanism can you implement to improve the network response time?

which mode of video delivery?

Captain Marion’s Videography delivers Internet digital video using 9 MPEG video encoders and a
statistical multiplexer. Channels are packed into a 6-MHz channel bandwidth.The MPEG
multiplexe monitors and allocates the appropriate bandwidth. The multiplexer measures available
bandwidth and feeds back signaling to the MPEG encoders. Coding rates are then increased or
decreased. Packet generation from each input source is controlled such that no packets are
dropped and no extra null packets can be generated.
These bandwidth and traffic requirements work best with which mode of video delivery?


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