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Exam A
QUESTION 1
Certkiller wants to improve the security of their network.
Which information supplied by Certkiller would be most relevant to the new design?

A. The network topology.
B. The speed of the network.
C. The company’s user policy.
D. The number of network users.
E. The applications permitted on the network.
Correct Answer: C
QUESTION 2
Certkiller has six branch offices spread across the eastern seaboard. The branch offices are connected to
headquarters through dedicated links.
Certkiller users have online access to sales records, customer records and billing data in various branch
office databases. Certkiller want to open a new branch office in the Midwest. The new branch office will
have a dispatch center which will require constant communication with the local retailers.
What additional information should you obtain about applications in use on the network?

A. The authentication used by the application.
B. The routing protocols supported by the application.
C. The applications’ integration in the network.
D. The application data-link layer overhead.
E. The applications’ level of criticality.
Correct Answer: E
QUESTION 3
Which three factors will you take into account when asked to characterize an existing network? (Select three.)
A. Traffic analysis
B. Impact on future business
C. Customer staff input
D. Visual inventory
E. Network audit
F. Server statistics
G. Ping analysis
Correct Answer: ACE
QUESTION 4
Which of the following sources of information will prove to be most helpful and accurate when you are collecting data about a customer’s existing network? (Choose two.)
A. Existing network topology diagram
B. The resident IT specialist at the customer’s company
C. User interviews
D. Configuration obtained from network equipment
E. Traffic analysis
F. Customer-supplied server list
Correct Answer: AD QUESTION 5

You work as a network consultant. You are contracted by Certkiller to help with the expansion of the
Certkiller network.
Certkiller currently has six branch offices spread across the eastern seaboard. The branch offices are
connected to headquarters through dedicated links.
Certkiller users have online access to sales records, customer records and billing data in various branch
office databases. Certkiller want to open a new branch office in the Midwest. The new branch office will
have a dispatch center which will require constant communication with the local retailers.
You want to obtain information about current network availability. Which question would you ask?

A. Is clustering technology in use by servers on the network?
B. Is full-duplex Ethernet technology deployed on the network?
C. Which routers have HSRP implemented?
D. Are the switches configured for auto-sensing?
Correct Answer: C
QUESTION 6
You are contracted as the network administrator, for a gaming software company, Certkiller . The CEO wants an improved communication infrastructure and thus wants you to redesign the existing network. The following is the Certkiller CEO’s opinion:
*
The goal is to become one of the top three peer-to-peer online gaming software companies.
*
There are currently 200 employees around the globe, of which 150 is located in London, the head
quarters.
*
Anticipated staff growth is set at around 500 employees in two year’s time. Of the 500 employees, 40%
will work remotely as a cost reduction method.
*
With such a growth rate, the release of 20 titles in the next 12 months is anticipated.
Which additional pieces of information are necessary to design the campus core? (Choose all that apply?)
A.
The current operating system.
B.
The authenticity and security policy
C.
The traffic pattern
D.
The current implementation
E.
The company’s position in the gaming market industry

Correct Answer: CD
QUESTION 7
Which three sources does the network engineer use to collect information for characterizing an existing network? (Choose tree)
A. Staff input
B. Visual inventory
C. Network Audit
D. Traffic analysis
E. Server Statistic
Correct Answer: ACD
QUESTION 8
Which TWO information sources will provide most accurate data if you were tasked to find information regarding a customer’s existing network?
A. Existing network topology diagram
B. Customer interview
C. Traffic analyst
D. Configuration obtain from network equipment
E. Customer supply server list
Correct Answer: AD
QUESTION 9
The Certkiller .com management has taken a decision to upgrade the client network to a switch network. What is the reason of this move?
A. Business requirement
B. Performance requirement
C. Management requirement
D. Application requirement
Correct Answer: B
QUESTION 10
Which of the following features will you affect when you choose a codec in your network design to carry IP telephony? (Choose all that apply.)
A. Voice packet header size
B. Bandwidth necessary for voice calls
C. Voice quality
D. Silence packet handling
E. All of the above.
Correct Answer: BC
QUESTION 11
You are the network administrator at Certkiller . You are planning trunk capacity for the Certkiller network.
You need to determine the number of circuits needed from a PBX to a converged network.
Which information would you require to make this decision? (Choose all that apply.)

A. Busy hour traffic.
B. The number of sites.
C. Blocking probability (GoS).
D. The number of users per site.
E. The average duration of a call.
Correct Answer: AC
QUESTION 12
To minimize expenses due to long distance charges, you designed a converged network to carry calls on-
net as close as possible to the destination.
Why can a VoIP call go off-net earlier that designed? (Choose two.)

A. The local voice gateway sends busy-back signal.
B. The Call Manager server is too busy to process the call in a usual manner.
C. The telephone user dials an access code.
D. Destination routing not properly setup on the local and remote gateways.
Correct Answer: AC
QUESTION 13
Which of the following will you cite as reasons why VoIP calls could go off-net earlier than designed when a converged network was configured to carry voice calls on-net as close as possible to the destination to minimize long distance charges? (Choose all that apply.)
A. destination routing not properly configured on both local gateways
B. local call manager server is too busy to process the call
C. local voice-gateway detects insufficient WAN bandwidth
D. the telephone user dials an access code
E. all of the above
Correct Answer: CD
QUESTION 14
A PBX is connected to a service provider that makes use of three ISDN PRI (T1) links and no other facility.
Non-Facility Associated Signaling (NFAS) is in use (only one signaling channel for all three PRI links) and
the tariff offering provides for the maximum number of voice channels.
What is the maximum number of voice calls that can be made simultaneously?

A. 69
B. 71
C. 72
D. 90
E. 92
F. 120
Correct Answer: B
QUESTION 15
Study the exhibit below carefully:

Above is a converged voice and data network. This network is designed to carry voice calls on-net as
close a possible to the destination to reduce long distance charges.
Why is it that a VoIP call can go off-net earlier than designed? (Choose two)

A. The local voice gateway detects lack of bandwidth.
B. The destination routing is not configured on both local and remote gateways.
C. The telephone user dials an access code.
D. The local call manager server is too busy to process the call.
Correct Answer: AC QUESTION 16
Certkiller Technologies has a single location with headquarters in one office building and three
warehouses. Their customer base consists of 400 independent parts resellers. The resellers connect
through direct links to the Certkiller network to access an ordering system. The servers and access routers
connecting to the retail outlets are on a separate Ethernet VLAN in the headquarters campus.
The resellers complain about poor response time when they connect to the ordering system.
Certkiller Technologies wants you to help them improve their network to increase the performance of their
customers’ connections to the ordering system.
What are two additional details about Certkiller ‘s existing network needed for this analysis? (Choose all
that apply.)

A. The Router ACLs that provide security to the servers.
B. The bandwidth for the Internet connection.
C. Type of the connections to the resellers.
D. Utilization on the servers’ VLAN.
E. The number of users on the headquarters LAN.

Correct Answer: CD
QUESTION 17
Certkiller was approached by the Minister of the Education Department, to start an experiment in one of the public school districts since the government passed a Bill that all schools are to comply with the Safe Schools Initiative. The situation at the schools in this district is as follows: The district has approximately 3000 students dispersed in the following manner: – one high school, one junior high school and three grade schools. All the phone calls to these schools are switched by a local telephone company’s centrex switch after which it is routed to the appropriate school. The schools are all fitted with fractional T1 Frame Relay and Cisco routers for networking purposes. The users are on a switched 10/1/100 network utilizing Cisco switched and Category 5 cable. The high school has the Internet access through an Internet Service Provider which resides 35 miles away via a T1 Frame Relay. This internet connection is shared with the other schools in the district. Due to the Safe Schools Initiative, phones need to be put in each classroom. Though the costs are astronomical and there are no facilities, the schools would also want to install video in each school for video conferencing purposes and it will be a definite aid in distance learning for the high school. ISDN PRI LINKS will be used to connect the video partners. In addition to the above, there is also the student information; that is stored on the local servers and shared between the schools as learners graduate from elementary to junior high to high school as well as transfers in and out of the district; that has to be protected. Why would you, the network administrator at Certkiller , suggest IP telephony to this particular customer? (Choose all that apply.)
A. Voice, video and data run on the same physical media, namely, Cat5 cable.
B. Reduction of long distance charges by using VoIP.
C. Eliminate reliance on local provider for any future phone calls.
D. The cost of adding additional telephones is minimal.
E. All of the above.
Correct Answer: AD