Tài liệu Fast Way to get your Certification - Title:Design docx
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Exam :640-025
Title:Design
Fast Way to get your Certification
Real Level Practice Questions Guides
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Real Level Practice Questions Guides
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Fast Way to get your Certification
Real Level Practice Questions Guides
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Version Number:Version 1-2003
Last Verified and Updated on Jan 4, 2003
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Question No 1
In a Novell environment, it is often a good idea to implement policies controlling resources access by
configuring SAP filters
A. On all routers.
B. On access-layer routers.
C. On distribution-layer routers.
D. On core-layer routers.
Answer: C
Question No 2
What does NetBIOS send to identify itself?
A. Unicast.
B. Multicast.
C. Broadcast.
D. SAP advertisement.
Answer: C
Question No 3
Which of the following could be considered a "subarea" in the SNA hierarchy?
A. Only Type 2 nodes.
B. Only Type 3 nodes.
C. An FEP with no peripheral devices hanging off it.
D. Peripheral nodes like FEP's.
Answer: C
Question No 4
A master domain trusts ______.
A. No one.
B. All other master domains.
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C. Only directly-connected master domains.
D. All devices in the domain.
Answer: A
Question No 5
What happens after an SNA SSCP-LU and SSCP-PU connection is made?
A. An LU-LU session occurs.
B. An LU-PU session occurs.
C. A PU-PU session occurs.
D. Nothing, because this should never occur.
Answer: A
Question No 6
Which of the following is not an RSRB encapsulation protocol?
A. PPP
B. TCP
C. Frame Relay
D. IP FST
E. Direct
F. Local SRB
Answer: A
Question No 7
Which is the remote LAN access connectivity method use for a specific purpose (ie, email)?
A. Remote gateway.
B. Remote control.
C. Remote virtual LAN.
D. Remote node.
Answer: A
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Explanation:
Incorrect answers:
B:
C:
D:
Question No 8
Of the following routing functions, which has a unique purpose from the others?
A. Holddown.
B. Hot standby.
C. Count-to-infinity.
D. Poison reverse.
Answer: B
Question No 9
In a Frame Relay network, what issue occurs due to routing protocols using split horizon?
A. A full mesh topology is required, which requires a lot of configuration.
B. Routers report Frame Relay errors due to routing updates not being forwarded
C. Connectivity between networks is limited in a partial-mesh.
D. No routing traffic is sent to peer routers.
Answer: C
Question No 10
What is the fundamental aspect in a firewall design?
A. Host security.
B. Data compression.
C. Company policy.
D. Access to services.
Answer: C
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Question No 11
If you turn off the IGRP holddown timer, you can ______.
A. Reduce the time to detect carrier loss.
B. Introduce problems because of bad routes.
C. Reduce the likelihood of routing loops.
D. Reduce convergence time.
Answer: B
Question No 12
When selecting an IP addressing scheme for a client with thousands of nodes ______.
A. Use a scheme that will permit classless routing.
B. Use a scheme that will permit mirroring.
C. Use class C addresses.
D. Use a scheme that will permit variable-length subnet masks.
Answer: A
Question No 13
Which of the following AppleTalk designs is most scalable?
A. AppleTalk Phase 3.
B. AppleTalk Phase 2 implemented everywhere; enhanced IGRP used on WANs and RTMP used on
LANs.
C. Use AURP because with AURP only routing table updates are sent.
D. Use RTMP but reduce the time between updates.
Answer: B
Question No 14
A hierarchical mesh design for nonbroadcast multiaccess X.25 and Frame Relay ______.
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A. Does not use full-mesh design techniques.
B. Permits full connectivity but minimizes virtual circuits.
C. Lets traffic cross an X.25 network only once.
D. Must be used to solve split horizon issues.
Answer: B
Question No 15
Out-of-band call setup is accomplished in StrataCom environments by ______.
A. The Intelligent Network Server (INS).
B. Soft PVCs.
C. FastPacket call setup protocol.
D. Signaling System 7 (SS7).
Answer: A
Question No 16
NetBIOS end stations use names to communicate with servers. Device names on the network are learned
through extensive use of ______.
A. ARP request.
B. Static mapping.
C. Data-link layer broadcasts.
D. DHCP servers.
Answer: C
Question No 17
At what layer does ZIP work?
A. Application
B. Network
C. Transport
D. Session
E. Data Link
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Answer: D
Question No 18
If you have SNA clients, the mainframe, and the FEP all in the same location and only one path to the
FEP, which of the following could you use?
A. APPN
B. Proxy Explorer
C. RSRB
D. DLSW
Answer: B
Question No 19
NetBIOS end stations use names to communicate with servers. Device names on the network are learned
through extensive use of ______.
A. ARP request.
B. Static mapping.
C. Data-link layer broadcasts.
D. DHCP servers.
Answer: C
Question No 20
In a SNA network with RSRB, TCP encapsulation is used for LOCAL ACK to ______.
A. Determine subnet scopes.
B. Determine distance to gateway.
C. Integrate UNIX support.
D. Ensure guaranteed delivery.
Answer: D
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Question No 21
A multiport router with one LAN and several WAN connections would be used for ______.
A. A small home/office with a few users.
B. Very secure connections.
C. Remote gateway applications only.
D. Power users in hotel rooms.
Answer: C
Question No 22
When gathering data for a new internetwork design, you should:
A. Develop an understanding of business information flow.
B. Develop the internetwork structure and topology.
C. Pay no regard to corporate politics.
D. Configure internetworking devices.
Answer: A
Question No 23
What are the two Internetwork design goals that most often are a tradeoff?
A. Designing a scalable network and maximizing network availability.
B. Meeting the customer’s business requirements and maximizing network availability.
C. Keeping the costs down and maximizing network availability.
D. Using state-of-art solutions and maximizing network availability.
Answer: C. D
Question No 24
Major network numbers are subnetted, at a fixed length, to provide:
A. Greater administrative control of traffic.
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B. A greater number of hosts per segment.
C. Better utilization of addressing space.
D. An easy conversion between binary and decimal numbers.
Answer: A
Question No 25
Which of the following items is not a consideration when selecting a routing protocol for an
internetwork?
A. The complexity of converting from the current routing protocol.
B. The ability to support variable length subnet masking.
C. The ability to support a wide variety of user applications.
D. The time for the network o converge after a topology change.
Answer: C
Question No 26
When estimating bandwidth used by a routing protocol, which of the following questions is least
relevant?
A. What path metrics are supported?
B. How often are routing updates transmitted?
C. What data is transmitted in routing updates?
D. Is snapshot routing supported?
Answer: A
Question No 27
Variable-length subnetting:
A. Permits a subnet mask that does not have the standard 32-bit length.
B. Is best designed by further subnetting one regular subnet.
C. Is not usually used in serial links.
D. Is recommended so that you can have numerous subnet masks for a given network.
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Answer: D
Question No 28
Which factor involved in network design controls how security is implemented?
A. Product availability.
B. Policy.
C. Bandwidth requirements.
D. Performance.
Answer: B
Question No 29
Redundant SNA front-end processors
A. Must have different MAC addresses.
B. Let a user’s workstation send requests to either front-end processor during an established session.
C. Provide redundancy and load balancing on a connection-by-connection basis.
D. Can have the same MAC address when connected to the same Token Ring network.
Answer: A
Question No 30
When using the Internet as a remote access methods:
A. Each organization has a virtual private network implemented by a tunneling protocol.
B. All organizations share a single virtual private network using the layer-2 forwarding protocol.
C. A virtual private network is created using IP routing protocols and a GRE tunnel.
D. The user simply accesses the private corporate network through a domain name.
Answer: A
Question No 31
In remote access designs, the four main concerns are
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A. Availability, cost, speed, distance.
B. Cost, applications, speed, distance.
C. Distance, speed, modem type, and cost.
D. End-station type, cost, availability, speed.
Answer: A
Question No 32
Multilink PPP allows aggregation of B-channels by
A. Segmentation and sequencing of packets through an additional four type field added to the header.
B. Segmentation and sequencing of packets through an additional two type field added to the header.
C. Segmentation and sequencing of packets through a user configurable field added to the header.
D. Segmentation and sequencing of packets through a method to be determined.
Answer: A
Question No 33
A remote user that typically dials in from a hotel room
A. Is a classified as an occasional telecommuter or mobile user and would typically use analog dial-in
lines.
B. Is classified as a dedicated telecommuter or mobile user and would typically use analog dial-in lines.
C. Is classified as an occasional telecommuter or mobile user and would typically use ISDN dial-in
lines.
D. Is classified as an dedicated telecommuter or mobile user and would typically use ISDN dial-in lines.
Answer: B
Question No 34
Which of the following is a major issue in a large Novell NetWare network that uses a full-mesh Frame
Relay topology?
A. Split horizon cannot be turned off.
B. SAP broadcasts use a substantial amount of bandwidth.
C. Snapshot routing is not yet supported to reduce bandwidth usage by RIP.
D. Servers do not comply with the Committed Information Rate.
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Answer: B
Question No 35
Which protocol does the Remote Access Server feature of Windows NT use as its encapsulation method
on WAN links?
A. HDLC
B. PPP
C. LAPB
D. SLIP
Answer: B
Question No 36
What additional benefits are realized by network designs that employ the Internet DNS model of
translating a NetBIOS name to an IP address?
A. Bandwidth utilization is improved because broadcast traffic is reduced.
B. Latency for the name translation is reduced because functionality is distributed amongst different
servers.
C. The amount of administrative overhead is reduced because an internet DNS server understands
NetBIOS names and IP addresses that were either statically or dynamically assigned.
D. Latency for the name translation is reduced because functionality is centralized into one server.
Answer: A
Question No 37
The Windows Internet Name service method of name resolution uses ________ addresses to enable clients
to dynamically register NetBIOS names and to browse the network.
A. Broadcast
B. Multicast
C. Unicast
D. Statically defined
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Answer: C
Question No 38
The Microsoft LAN services Browser feature for name resolution was designed for usage in a flat
network topology where
A. All devices shared the same media segment.
B. The names of all devices were locally segment.
C. Routers were not available.
D. Broadcast traffic provided all services.
Answer: A
Question No 39
Cisco’s IP eXchange product is
A. A client software package.
B. A server software package.
C. A software package available for both clients and servers.
D. A Cisco IOS router feature first available in Release 11.1
Answer: C
Question No 40
Which of the following Apple Talk designs is most scalable?
A. Apple Talk Phase 2 implement everywhere, Enhanced IGRP used on WANs, and RTMP used on
LANs.
B. Both Apple Talk Phase 1 and Phase 2 supported, Enhanced IGRP used on WANs, and RTMP used
on LANs.
C. Apple talk phase 2 implemented everywhere, and RTMP used on WANs and LANs.
D. Apple talk phase 3 and Enhanced IGRP implemented everywhere.
Answer: A
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Question No 41
A thorough understanding of a protocol suite’s overhead traffic and routing updates is especially
important when selecting
A. The server platform.
B. A wide-area service.
C. The amount of memory required for routers supporting the protocols.
D. The encapsulation method employed by the NIC cards.
Answer: B
Question No 42
An Ethernet cut-through switch:
A. Starts forwarding a frame as soon as the destination address is received.
B. Forwards only frames with a legal length.
C. Computes the CRC before forwarding a frame.
D. Is appropriate for asymmetric switch such as connecting a 10-Mbps Ethernet to a 100-Mbps Ethernet
network.
Answer: A
Question No 43
Which of the following is not a common reason for updating a campus LAN design?
A. New applications need more bandwidth.
B. Decreased CPU power at workstations and servers puts more demand on the network.
C. Globalization of financial markets requires timely data from around the world.
D. Organizational structures are changing.
Answer: B, C
Question No 44
Which of the following conditions would result in recommending switching instead of routing?
A. Scarcity of IP addresses.
B. Media contention problems.
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C. The need for variable-length subnet masks.
D. Lots of resource-discovery traffic.
Answer: B
Question No 45
What are two main functions of a router?
A. Path determinations.
B. IP address to MAC address conversion.
C. Packet switching.
D. VLAN creation.
Answer: A, C
Question No 46
Connecting multiple switched LANs to one router that acts as a collapsed backbone is an attractive
design for a client who has:
A. A large number of end stations.
B. A lot of multimedia bandwidth-intensive traffic.
C. A requirement for simple configurations.
D. A lot of cross-functional teams that communicate across VLANs.
Answer: C
Question No 47
NetBEUI operates as a complete ________ protocol in the OSI reference model.
A. Network and data link layer.
B. Session and transport layer.
C. Transport and data link layer.
D. Transport and network layer.
Answer: D
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Question No 48
NetBIOS operates as a _______ protocol in the OSI reference model
A. Transport layer.
B. Session layer.
C. Presentation layer.
D. Application layer.
Answer: B
Question No 49
In a Windows network, client generate _______ to locate servers.
A. SAP advertisements.
B. Service requests.
C. Name queries.
D. Nothing
Answer: C
Question No 50
Which of the following statements is true regarding Novell NetWare encapsulation on Ethernet?
A. The Cisco term arpa is equivalent to the Novell term ETHERNET_802.3 and means an Ethernet
version II frame with an Ethertype and no 802.2 header.
B. The Cisco term novell-ether is equivalent to the Novell term ETHERNET_802.3 and means an 802.3
header with no 802.2 header.
C. The Cisco term sap is equivalent to the Novell term ETHERNET_802.2 and means an 802.3, 802.2,
and SNAP header.
D. The Cisco term arpa is equivalent to the Novell term ETHERNET_II and means an 802.3 header
with an 802.2 header.
Answer: B
Question No 51
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The major issue in WAN design is:
A. Accommodating many different services and the bandwidth they demand.
B. Compatibility with the components used in the LAN design.
C. Insuring that ATM is always deployed at the proper place.
D. Limiting the bandwidth consumption by all users of the network.
Answer: A
Question No 52
What is the biggest benefit if inverse ARP in a Frame Relay Multipoint network?
A. Conformance to standards.
B. Minimal configuration.
C. Low protocol overhead.
D. Reliability.
Answer: C
Question No 53
If your client needs to run SMDS over ATM, you need to warn your client that:
A. Cells cannot be mixed together on the same virtual circuit.
B. Messages must arrive in sequence because there is not sequence ID.
C. ATM adaptation layer ¾ will be required.
D. No CRC is used.
Answer: C
Question No 54
A multipoint router with one LAN and several WAN connections would be used for:
A. A small office/home with a few users.
B. Power users in hotel room.
C. Very secure connections.
D. Remote gateway applications only.
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Answer: D
Question No 55
In APPN SNA, a dependent LU:
A. Implements DLUR and DLUS services.
B. Issues a BIND statement.
C. Requires a downstream PU.
D. Requires a DLUR.
Answer: C
Question No 56
When designing a TCP/IP network, emphasis should be placed upon which of the following?
A. An IP addressing scheme that uses subnetting to maximize route summarization.
B. A routing protocol that reduce periodic routing announcements.
C. A security policy that protects the client from unwanted Internet access.
D. A single-vendor solution to ensure compatibility in both the LAN and WAN environments.
Answer: A
Question No 57
OSPF virtual links that connect an area to the backbone through another area:
A. Are a normal component of a hierarchical design.
B. Have better performance than normal links.
C. Simplify the design and configuration.
D. Can be avoided in a good design.
Answer: D
Question No 58
When a router provides connectivity between two different switched subnets, configure the router to use:
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A. Broadcast forwarding.
B. Secondary addressing.
C. Different routing protocols.
D. Fast ARP caching.
Answer: B
Question No 59
When Enhanced IGRP is used with IPX?
A. Redistribution of Enhanced IGRP routes requires configuration.
B. Routers in the Enhanced IGRP cloud update the hop count and ticks when advertising routes that
were learned from IPX RIP.
C. Enhanced IGRP tracks the IPX routing metrics as external metrics.
D. IPX can learn about IP routes.
Answer: C
Question No 60
Internetwork design models:
A. Simplify complex design problems.
B. Are described in many text books and user manuals.
C. Are static because basic technologies do not change often.
D. Include router configuration guidelines.
Answer: A
Question No 61
Which AAL is known as being simple and efficient?
A. AAL5
B. AAL1
C. AAL4
D. AAL2
E. AAL3
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Answer: A
Question No 62
When DNS (Domain Name Service) is used, what must be placed side by side with it in the NT server?
A. WINS
B. DHCP
C. Name Binding
D. ARP server
Answer: D
Question No 63
When comparing legacy SNA to APPN, which statement is least relevant?
A. In legacy SNA, the user's station has no intelligence.
B. Answer missing.
C. Legacy SNA is based on the ability to send request response units (RUs) over a path control
network.
D. The goal of legacy SNA was efficient use of expensive low serial WAN.
Answer: C
Question No 64
To authenticate remote users you could ______.
A. Use a server that implements TACACS+ or Radius.
B. Use per-user access lists at the access server.
C. Use the SLIP protocol with CHAP.
D. Require the user to call the network administrator prior to login.
Answer: A
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Question No 65
Windows networking is accomplished because clients and servers share ______.
A. The same physical medium.
B. Common features in their operating systems.
C. Resources located in a centralized mainframe.
D. A common naming convention.
Answer: B
Question No 66
A medium sized, campus network design using NETBIOS over TCP/IP (NBT) and static name resolution
in the LMHOSTS file has been proposed. There is a need to translate NETBIOS names to IP addresses
for the entire campus. Which of the following would provide a bandwidth-conscious, administratively
low-cost solution?
A. LAN Services Browser.
B. An Internet DNS Windows 2000 Server in each necessary location.
C. A centrally located WINS server.
D. Additional entries in the LMHOSTS file for all devices in each domain.
Answer: C
Question No 67
When designing a method to optimize utilization of resources on a slow WAN connection, use ______.
A. Applications that let you configure a small window size.
B. Priority queuing for mission-critical time sensitive protocols.
C. Fast switching to quickly output frames from a fast WAN link.
D. An odd number of routers (rather than an even number).
Answer: B
Question No 68
Which of the following policies would most likely be implemented at the distribution layer of the
hierarchical model?
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A. Charging for internetwork usage (accounting).
B. Controlling email privacy.
C. Controlling access to resources.
D. Controlling names used for servers and users workstations.
Answer: C
Question No 69
At which layer might features like compression, congestion control, and management tools be deployed?
A. Distribution layer.
B. Core layer.
C. Access layer.
D. Addressing layer.
Answer: A
Question No 70
When DNS is used, what must be placed side by side with it in the Windows 2000 Server?
A. WINS
B. DHCP
C. Name Binding
D. ARP Server
Answer: D
Question No 71
Which of the following is not a way to prevent routing loops in distance vector routing protocols?
A. Poison Reverse.
B. Hold Down Timers.
C. Hot Standby Routing Protocol.
D. Split Horizon.
Answer: C
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Question No 72
Which of the following is true regarding AURP?
A. You can tunnel IP in DDP datagrams.
B. You can tunnel DDP in IP datagrams.
C. You can't tunnel DDP in IP datagrams.
D. You can't tunnel IP in DDP datagrams.
Answer: B
Question No 73
What is another name for NetBIOS over IPX?
A. NIPX
B. NWLINK
C. IPXWAN
D. N/IPX
Answer: B
Question No 74
Which of the following is the least relevant when allocating AppleTalk network numbers?
A. Use MAC OS 7.0 or better.
B. Document the AppleTalk network numbers being used.
C. Migrate from AppleTalk Phase One to Phase Two.
D. Allocate generous cable ranges.
Answer: A
Question No 75
What are the three layers of Hierarchical Design?
A. The core, distribution, and access layers.
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B. The core, server, and access layers.
C. The wan, campus, and local-area layers.
D. The wan, distribution, and access layers.
Answer: A
Question No 76
Regarding firewall security, which one of the following is not a value-added service?
A. Proxy applications.
B. FTP
C. NAT
D. Login protection.
E. Audit trails.
Answer: B
Question No 77
Which of the following corporate policies is least relevant to internetworking design?
A. List of approved vendors.
B. Email privacy guidelines.
C. Distributed authority for device naming and addressing.
D. Distribution of mission-critical operations.
Answer: B
Question No 78
You are designing an internetwork for a customer who has given you information requirements, new
access requirements, and policies regarding approved protocols. What should you ask for next?
A. Current router configurations.
B. Budget available for the internetwork design project.
C. Job satisfaction level of network managers.
D. Naming and addressing standards.
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