Tài liệu Exam :640-441 Cisco Certified Design Associate - Version Number:6.0 docx

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Orchard Leasing is a contract leasing and facilities management company with headquarters
in Denver, Colorado and offices in Houston, Texas, Atlanta, Georgia, Minneapolis,
Minnesota, Chicago, Illinois. Orchard contracts with owners to provide leasing, maintenance
and management of high-density office buildings and building complexes. A local office is
maintained in one building in each of the cities. The company’s superior service and creative
and aggressive marketing has lead to very rapid growth in each of the Orchard’s
marketplaces. In fact, Orchard has just signed contracts for four buildings in London, England
and three buildings in Frankfurt, Germany. However this growth has out stripped Orchard’s
ability to keep up with administrative tasks associated with business, and management is very
concerned about its ability to continue to provide the same level of service, given the two new
international contracts.
Each of the offices has historically maintained its own operation center including a Windows
NT file server with leasing, marketing, maintenance, and facilities management (including
billing) software, as well as standard office productivity software provided by the
WordPerfect suite. The business applications are all custom are all custom applications
developed in Access and Visual Basic. Each office has an Ethernet network on 10BaseT
cabling. The leasing and marketing software systems run on Apple Macintosh and
maintenance and facilities management runs on Intel-based PCs. Typically, there are five PCs
and two Macintoshes in an office. The Denver office has six PCs and three Macintoshes but
will increase those numbers to ten PCs and six Macintoshes after the proposed upgrades.
Data is consolidated monthly in an office report sent by e-mail via the Internet to the home
office in Denver. This Internet connection is by way of local ISP on a dial up connection.
With the addition of the London and Frankfurt offices, Orchard had decided to consolidate a
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significant portion of administrative tasks in Denver. The lease administration, tenant billing,
accounts receivable accounts payable, and master building records will all be consolidated in
Denver. The marketing, maintenance, and office productivity software will continue to reside
in the branch offices. The number of computers, servers and Macintoshes and PCs will remain
the same as the branch offices but a new NT Server and the additional Macintoshes and PCs
will be added in Denver.
With this upgrade, Orchard will add Microsoft’s Exchange with outlook for e-mail,
scheduling, and contact management. The current branch office files servers will have less of
a load and therefore Orchard believes they will be able to run Exchange Server and the
existing server hardware with additional memory and disk space. Additionally, Orchard will
be establishing a World Wide Web site in Denver to be used for marketing and
communication to tenants.

Orchards new chief financial officer (CFO), who has responsibility for computer and
information systems, has requested competitive bids for a turn-key WAN to meet Orchards
needs. High performance across a WAN is not seen as a priority. The communications that
will occur between offices are “back-office” functions and are not time critical.
Accomplishing the transmissions this morning rather then tomorrow is the level of
criticalness. Minimising cost will take priority over unneeded performance. The CFO
estimates that beyond e-mail, which will be normal, there will be a daily transmission of
records for consolidation both to and from each office and Denver each day. These documents
are approximately 2MB in size.


CASE 4: Leviathan System’s Inc:
Business software development, publishing, and sales
Traditionally, Leviathan has developed and sold AS400 business software solutions. In
addition to its headquarter office, it had five sales offices in United States, a European office,
and an Asian office. It is converting its software to Windows NT client/server technology
using SQL Server as the database engine for the new project line. The offices are connected
with a point-to-point SNA network with line speeds varying from 56k to a Frac T1. Token
Ring is installed within the office for LAN applications. Each of the facilities is wired with
Category 5 cable in an Intermediate Distribution Facility/Main Distribution Facility
(IDF/MDF) design The company recently decided that it must completely convert the Token
Ring to Ethernet. This conversion will first occur in the HQ facility and then in each of the
branch offices. The conversion will occur one IDF at a time, that is, the Token Ring and
Ethernet networks will coexist as work groups are converted.
The client-server products will be added, but the AS400 product line will not go away.
Therefore, SNA will be a fact of life for the foreseeable future. The customer prefers to have a
single WAN but has decided to look at a frame relay solution to transport the client/server
traffic and keep the SNA network intact. Some TCP/IP is in use, but only at the local LANs.
The AS400s are connected to the Token Ring via a 5294 controller that provides the terminal
server functions between the LANs and the AS400. Leviathan considers it too expensive and
problematic to put the AS400 on Ethernet, so management would consider maintaining the
AS400 on a small, four -node Token Ring network and put the rest of the company in
Ethernet.
There are 56 5250 terminals in the HQ office and the sales office, each has approximately
6PCs running 5250 terminal emulation, including the Europe and Asia offices. The 5250
terminals will be converted to PCs using the 5250 terminal emulation software. The HQ office
also had 100 PCs and 5 Macintoshes (for production of marketing material and product
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documentation). Additionally, there are two notebook computers in each sales office. These
notebooks already use terminal emulation to dial into the AS400 for demonstrations and sales
reporting. This dial-in functionality must continue to exist for the AS400 and must be
provided for the new client/server products. There are four AS400 at the HQ office facility
and one each in two if the US sales offices, the European office, and the Asian office. Four
Windows NT servers will be located at HQ, and a small NT server in each of the sales offices.
Most of the 100 PC’s in HQ run 5250 terminal emulation, which utilizes NEtBIOS.
Two NT Servers are at HQ. Two additional servers will be installed for a total of four
Windows NT Servers, two for development (a Digital Equipment Corporation Alpha and a
Hewlett-Packard multiprocessor Pentium), one for Sales and Marketing, and one for all other
support. Software development traffic to the AS400 occurs around the clock but peaks from 1
to 7 p.m. The development effort on the new product is expected to follow the same pattern.
15 new employees will be hired for this development effort. All other use of the network
occurs in normal business hours. Leviathan will install an Internet server hosted on an
additional Windows NT system. It will provide a World Wide Web presentation of Leviathan
products and an FTP server to deliver product updates and fixes. It will also host a discussion
group system and SMTP and POP3 servers for e-mail to customers and prospects. The site
must provide secure FTP and a firewall to protect Leviathan internal systems. Leviathan has
standardised Microsoft Office for office productivity and Microsoft tools for development of
its new product line.
Company email is provided by a system on the AS400. This system will be converted to
Microsoft Exchange, but not as a part of this project.
The IS manager has asked for a design to connect all the offices to provide the Ethernet
connectivity within the HQ office and to provide for the Internet firewall.





Q.1
ISDN networks supports both _____.

A. Synchronous and ADSL modems.
B. Toll-connecting trunks and tie trunks.
C. Terminal handlers and external PADs.
D. Network termination 1 and network termination 2 devices.


Answer: D

Q.2
Which type of address is expressed as 12 hexadecimal digits, operates at the data link
layer, and is burned into ROM by manufacturer?


Answer: Mac

Q.3
Which device is part of the customer network and initiates a Frame Relay
communication exchange with the carrier network?
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A. DTE
B. DCE
C. DAS
A. SAS


Answer: A


Q.4
When naming servers, it is recommended that you append the___to the server name.

A. Location
B. IP address
C. PC designation
D. Segment designation


Answer: B


Q.5
Which type of ATM connection supports bi-directional communication?

A. Multipoint
B. Point-to-point
C. Point-to-multipoint
D. Point-to-point and point-to-multipoint


Answer: B

Q.6
View the Case Study for the FSI Test Equipment case study, what is a fact to consider in
establishing the customer’s acceptance criteria of the networks?

A. Livingston routers are in use.
B. Security is of utmost importance.
C. Though code is reused, it requires configuration control for each customer.
D. FSI must work in a “partner”-like framework while implementing the system.


Answer: B

Q.7
When are SNMP Trap messages sent?

A. When NMS need to initialise agents.
B. When agents have events to report to an NMS
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C. When an NMS wants agents to begin recording events.
D. When an NMS wants a proxy station to take over agent monitoring.


Answer: B

Q.8
Exhibit:
How will the transparent bridge manage traffic from node A to the other nodes?

A. Forward traffic to all nodes.
B. Broadcast traffic to all nodes.
C. Filter traffic to nodes C and D and ignore traffic to node B.
D. Filter traffic to node B and forward traffic to nodes C and D.


Answer: A


Q.9
The IP Routing Information Protocol (RIP):

A. Includes MD5 authentication.
B. Specifies no more then 15 hops between and stations.
C. Handles the process of updating the Time To Live field in an IP header.
D. Sends the network addresses and shored mask, as pad of the routing update.


Answer: B


Q.10
Which condition would result in recommending routing instead of switching?

A. Many Ethernet collisions.
B. Bandwidth utilisation over 40 percent on Ethernet.
C. Many desktops protocols sending packets to find services.
D. Excessive number of Ethernet run frames (shorter then 64 bytes)


Answer: C
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Q.11
Exhibit:
Drag each ISDN interface type to its corresponding features.
Drag and drop.

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Answer:




Q.12
Which other type of network device operates in a manner similar to LAN switches?

A. Transparent bridge
B. Source route bridge
C. Translational bridge
D. Source route translational bridge


Answer: A

Q.13
What is NOT a business constraint (or limitation) on a project?

A. Documenting the timeline for this project.
B. Documenting the names and types of new protocols.
C. Documenting the budget and resources available for this project.
D. Identifying any network staffing requirement such as hiring or training.


Answer: B


Q.14
As stated in the FSI Test Equipment case study, which statement is a business-related
issue that affects the network design?
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A. Timely, accurate, and secure communication with FSI customers is imperative.
B. The network must provide bandwidth to support large CAD and engineering files and
data.
C. In order to accomplish the onsite work required of the field team, a Novell LAN is
installed at each customer site.
D. The CAD and engineering workstations are maintained on a separate LAN segment
because of the importance of consistent high performance of the systems.


Answer: A


Q.15
View the Case Study.
Which statement is true with regard to development of a detailed network design
drawing for Orchard Leasing?

A. The routers required at each Orchard location should be identified.
B. The Domanin Name System server should be identified.
C. Information on the exact model and features of each AS400 will be required.
D. Based on the software development efforts at Orchard, the Catalyst 3500 Series switch
is a good choice for Ethernet Switching.


Answer: A


Q.16
View the Case Study.
Which statement is true with regard to development of a topology map FSI Test
Equipment?

A. A FastHub 400 will be required for desktop switching.
B. IPX support will be required at the headquarters location.
C. At each of FSI’s locations, a router providing Ethernet and WAN support is required.
D. The Cisco 3640 is a good router choice because it supports both Ethernet and Token
Ring.


Answer: B
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Q.17
Which to statements about FDDI are true? (Chose two.)

A. Token passing controls media access.
B. All attached devices must be connected to both rings.
C. The dual rings wrap on either side of a ring failure or device failure.
D. The secondary ring provides additional bandwidth during heavy traffic.
E. Multimode fibre allows greater network diameters than single mode fibre


Answer: A, C

Q.18
When will a Token Ring station send a beacon frame?

A. When the station is powered up.
B. When the station is powered down.
C. When the station has priority for the token.
D. When the station detects a problem with the network.


Answer: D


Q.19
Which two Apple Talk protocols are Data Link layer protocols? (Chose two.)

A. Zone Talk
B. FDDI Talk
C. Cable Talk
D. Local Talk


Answer: B, D


Q.20
Which task is the second step in building a prototype network structure to prove to a
customer that your design works?

A. Develop a detailed test plan.
B. Gain an understanding of what your competition plans to propose.
C. Determine any new customers requirements that affect your design.
D. Determine how much of the network structure must be built to prove the design concept.


Answer: D



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Q.21
At which layer of the OSI reference model do bridges and switches operate?

A. Session layer
B. Network layer
C. Physical layer
D. Data Link layer
E. Transport layer
F. Application layer
G. Presentation layer


Answer: D



Q.22
What is the maximum connection speed supported by the X.21 BIS protocol?

A. 5.6Kbps
B. 19.2Kbps
C. 28.8Kbps
D. 33.3Kbps


Answer: B


Q.23
What is an advantage of virtual LAN’s (VLANs)?

A. Broadcast control
B. Small bandwidth domains
C. Support discontiguous subnets
D. Easy mapping of network-layer addresses to data link-layer addresses


Answer: A



Q.24
Which technology would you choose for a cost-effective mesh network?

A. PPP
B. ISDN
C. SONET
D. Frame Relay

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