Cisco Internetwork Design Exam

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CISCO:

Cisco® Internetwork Design (CID®) Exam


640-025



Version 6.0

Jun. 17th, 2003

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Q.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
Q.2 What does NetBIOS send to identify itself?
A. Unicast.
B. Multicast.
C. Broadcast.
D. SAP advertisement.
Answer: C
Q.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
Q.4 A master domain trusts ______.
A. No one.
B. All other master domains.
C. Only directly-connected master domains.
D. All devices in the domain.
Answer: A
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Q.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

Q.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
Q.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
Explanation:
Incorrect answers:
B:
C:
D:
Q.8 Of the following routing functions, which has a unique purpose from the others?
A. Holddown.
B. Hot standby.
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C. Count-to-infinity.
D. Poison reverse.
Answer: B
Q.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
Q.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 Q.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: D
Q.12 When selecting an IP addressing scheme for a client with thousands of nodes you should
______.
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.
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Answer: A
Q.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
Q.14 A hierarchical mesh design for nonbroadcast multiaccess X.25 and Frame Relay ______.
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
Q.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
Q.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.
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C. Data-link layer broadcasts.
D. DHCP servers.
Answer: C
Q.17 At what layer does ZIP work?
A. Application
B. Network

C. Transport
D. Session
E. Data Link
Answer: D
Q.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
Q.19 Which of the following features would most likely be implemented on a router at the access
layer in the hierarchical design model?
A. Header, link, and payload compression.
B. Filtering by area, network, and zone.
C. Proxy services.
D. Optimized wide-area transport.
Answer: C
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Q.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
Q.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
Q.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
Q.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: D
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Q.24 Major network numbers are subnetted, at a fixed length, to provide:
A. Greater administrative control of traffic.
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
Q.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
Q.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
Q.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.
Answer: D
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Q.28 Which factor involved in network design controls how security is implemented?
A. Product availability.
B. Policy.
C. Bandwidth requirements.
D. Performance.
Answer: B
Q.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: C
Q.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
Q.31 In remote access designs, the four main concerns are
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
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Q.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
Q.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
Q.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.
Answer: B
Q.35 Which protocol does the Remote Access Server feature of Windows NT use as its
encapsulation method on WAN links?
A. HDLC
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B. PPP
C. LAPB
D. SLIP
Answer: B
Q.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
Q.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
Answer: A
Q.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
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Q.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
Q.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
Q.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
Q.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
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Q.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: C
Q.44 Which of the following conditions would result in recommending switching instead of
routing?
A. Scarcity of IP addresses.
B. Media contention problems.
C. The need for variable-length subnet masks.
D. Lots of resource-discovery traffic.
Answer: B
Q.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
Q.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
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Q.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 Q.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
Q.49 In a Windows network, client generate _______ to locate servers.
A. SAP advertisements.
B. Service requests.
C. Name queries.
D. Nothing
Answer: C
Q.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
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Q.51 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
Q.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: B Explanation: Because Inverse ARP is enabled by default for all protocols that it supports.
No additional command is required to configure dynamic address mapping on a subinterface.
Q.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
Q.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.
Answer: D
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Q.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
Q.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
Q.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
Q.58 When a router provides connectivity between two different switched subnets, configure the
router to use:
A. Broadcast forwarding.
B. Secondary addressing.
C. Different routing protocols.
D. Fast ARP caching.
Answer: B
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Q.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
Q.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
Q.61 Which AAL is known as being simple and efficient?
A. AAL5
B. AAL1
C. AAL4
D. AAL2
E. AAL3
Answer: A
Q.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
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Answer: A
Q.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
Q.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 Q.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
Q.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.
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Answer: C
Q.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
Q.68 Which of the following policies would most likely be implemented at the distribution layer of
the hierarchical model?
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
Q.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
Q.70 When DNS is used, what must be placed side by side with it in the Windows 2000 Server?
A. WINS
B. DHCP
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C. Name Binding
D. ARP Server
Answer: D
Q.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
Q.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
Q.73 What is another name for NetBIOS over IPX?
A. NIPX
B. NWLINK
C. IPXWAN
D. N/IPX
Answer: B
Q.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.
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C. Migrate from AppleTalk Phase One to Phase Two.
D. Allocate generous cable ranges.
Answer: A Q.75 What are the three layers of Hierarchical Design?
A. The core, distribution, and access layers.
B. The core, server, and access layers.
C. The wan, campus, and local-area layers.

D. The wan, distribution, and access layers.
Answer: A
Q.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
Q.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
Q.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.
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C. Job satisfaction level of network managers.
D. Naming and addressing standards.
Answer: B
Q.79 To control RIP and SAP traffic in a Novell Netware environment while maintaining
scalability, you use NLSP and ______.
A. Restrict the number of routing nodes that participate in one NLSP process to approximately 1000.

B. Redistribute to RIP and configure the necessary filters to avoid routing loops.
C. Restrict the number of routing nodes that participate in one NLSP process to about 400.
D. Run one NLSP process for all geographic areas.
Answer: C
Q.80 Which of the following are valid topology options in Frame Relay? (Choose three)
A. Half-and-Half partial mesh NBMA topology.
B. Subinterface with hub and spoke topology.
C. Full mesh NMBA topology.
D. Full mesh subinterface topology.
Answer: B, C, D
Q.81 When connecting multiple switched LANs to a router, avoid ______.
A. Ensuring that 10% of the traffic is local to an individual VLAN and does not need to be.
B. Dividing up VLANs by function rather than by data flow.
C. Using Token Ring instead of Ethernet.
D. Limiting the extent of the LAN emulation services provided by the router.
Answer: D
Q.82 After implementing a new internetwork design you should ______.
A. Develop the internetwork structure.
B. Monitor network performance.
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C. Analyze business and technical requirements.
D. Configure routers.
Answer: B
Q.83 To design a cost effective mesh network, which technology would you most likely use?
A. SONET
B. ISDN
C. PPP

D. FRAME RELAY
Answer: D
Q.84 Which statement best describes the IGX switch?
A. Redundant 1.2 Gbps cell switching bus with 8, 16, 32 slot configurations.
B. Redundant 1.2 Gbps cell switching bus with 8, 16, 24 slot configurations.
C. Single 1.2 Gbps cell switching bus with 8, 16, 32, slot configurations.
D. Single 1.2 Gbps cell switching bus with 8, 16, 24 slot configurations.
Answer: A
Q.85 What are the various classes of OSPF routers?
A. Internal router
B. Backbone router
C. ASBR
D. ABR
Answer: A, B, C, D
Q.86 In Novell IPX networks, split horizon can be disabled for ______.
A. EIGRP
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B. SAP
C. RIP
Answer: A
Q.87 IGRP’s routing metrics can be based on _____.
A. Bandwidth which is defined as the largest.
B. Delay which varies as the network gets larger.
C. Smallest MTU from here to the destination.
D. Bandwidth delay reliability and loading.
Answer: D
Q.88 Cisco's IPX WAN switch would be deployed in which of the following situations?

A. Lower bandwidth requirements, fewer routes, wide variety of service types.
B. Lower bandwidth requirements, many routes, wide variety of service types.
C. Lower bandwidth requirements, fewer routes, limited variety of service types.
D. Lower bandwidth requirements, moderate number of routes, wide variety of service types.
Answer: A
Q.89 Your client has recently upgraded the users in a Token Ring network to PC running 3270
emulation software. What would you recommend to provide access to an SNA mainframe in New
York across a serial link?
A. RSRB
B. APPN
C. SDLLC
D. STUN
Answer: A
Q.90 What does IPX use to locate servers?
A. DNS