Below are questions 1-19. To see an explanation for each question, please refer to the explanation link below the question or select explanations on the navigation bar to the left.
Questions
1. [OxNx] During a TFTP transfer using Cisco Routers what is the numeric value, in decimal, of the destination port field of the User Datagram Protocol (UDP) header?

a) 96
b) 47
c) a random number above 1024
d) 69
e) none of the above

2. [CxNx] What is the standard encapsulation method used by Cisco routers for the Internet Protocol (IP) on it’s Ethernet interfaces?
a) SNAP
b) ARPA
c) NOVELL-ETHER
d) DARPA
e) Ethernet_802.3

3. [CxNx] What will be the correct command on a Cisco router to set the IP address of an interface assuming you are at the "router(config-if)#" prompt?
a) ip address 1.1.1.1 255.255.255.0
b) ip address 1.1.1.1
c) ip 1.1.1.1
d) ip 1.1.1.1 255.255.255.0
e) none of the above

4. [CxNx] Which commands will display the IP addresses of all interfaces on a Cisco Router? (Choose all that apply)
a) show ip route
b) show ip address
c) show ip interface
d) show interface
e) display ip addresses

5. [CxNx] Which of the following commands will display the contents of the ARP cache of your Cisco router?

a) show ip arp cache
b) show ip route
c) show ip arp
d) show arp
e) there is no way to display the ARP cache

6. [CxNx] Reverse Address Resolution Protocol (RARP) is the process:

a) Where an IP host resolves it’s IP address by broadcasting it’s MAC address to the network and a BOOTP server assigns it an IP address.
b) Where an IP host resolves it’s MAC address by broadcasting to the local network it’s IP address.
c) Where an IP host tries to resolve the MAC address of a destination by sending a network broadcast. The destination responds to the broadcast with it’s MAC address.
d) Where an IP host resolves a destination IP address by sending a broadcast on the local network and the destination host responds with it’s IP address.
e)There is no such process.

7. [OxNx] Which of the following applications requires the connection-oriented layer four protocol, TCP? (Choose all that apply)

a) Telnet
b) FTP
c) TFTP
d) SNMP
e) none of the above

8. [RxNx] Which of the following are link state Routing Protocols.
(Choose all that apply.)

a) IP
b) OSPF
c) RIP
d) EIGRP
e) IS-IS

9. [CxNx] Of the following commands, identify the correct one for clearing the IP arp table in memory of the router.

a) clear ip arp-cache
b) clear ip arp-table
c) clear arp-cache
d) clear arp-table
e) clear arp-ram

10. [CxNx] Which of the following explains the correct definition of administrative distance as it pertains to Cisco’s IOS?

a) The process by which routers select an administrator for an autonomous system.
b) The process where a router will select the best path to a destination network.
c) The process where a router will distance itself from other routers due to it’s lack of administrative experience.
d) The process where a router will prioritize routing protocols so that in the event two routing protocols have conflicting next hop addresses, the routing protocol with the lowest administrative distance will take priority.
e) The process where a router will prioritize routing protocols so that in the event two routing protocols have conflicting next hop addresses, the routing protocol with the highest administrative distance will take priority.

11. [ExNx] Collisions occur when

a) multiple packets are placed on a serial link
b) multiple stations listen for traffic and transmit at the same time
c) when multiple tokens are on a ring simultaneously
d) beaconing process takes place

12. [RINx] How many subnets are possible with a Class C address and a subnet mask of 255.255.255.252?

a) 32
b) 30
c) 60
d) 62
e) 4

13. [RxNx] What commands will list all protocols that are currently being routed? (Choose all that apply.)

a) show ip protocol
b) show protocol
c) show run
d) show start
e) All of the above

14. [xxNx] Which of the following are true of access lists?

a) Access list should have at least one permit statement.
b) The last configured line should always be a permit statement.
c) Every access-list will implicitly deny all traffic.
d) Access-lists are processed top down.
d) telnet sessions will be permitted to the 172.16.0.0 network only
e) telnet sessions will be denied to the 172.16.0.0 network only

Answer
c) telnet sessions will be denied if initiated from any address other than 172.16.0.0 network

The secret to this question is the key word "established." Established means that the packet will be permitted unless it is the first part of the three way handshake. Recall that when we initiate a TCP connection we have no ACK. How can we acknowledge a sequence number from the other side when we have not established a session with him?

17. [xxNx] Which is generally true of the location of access-lists? (Choose all that apply.)

a) Standard lists will most likely be placed close to the destination.
b) Standard lists will most likely be placed close to the source.
c) Extended lists will most likely be placed close to the destination.
d) Extended lists will most likely be placed close to the source.
e) It does not matter.

Answer
a) Standard lists will most likely be placed close to the destination.
d) Extended lists will most likely be placed close to the source.

A standard list will only check the source address. It makes no difference where the packet is going. If you place a standard list close to the source you could very well be denying that traffic to go to other destinations. An extended list can be placed close to the source because we can permit or deny traffic based upon the source and destination address. This insures that only traffic we wish to have denied is denied.



18. [RxNx] Which of the following is most correct?

a) IP is to TCP. as IPX is to SPX.
b) RTMP is to Appletalk as IP RIP is to IP.
c) NLSP is to IPX as OSPF is to IP.
d) a is true.
e) b is true.
f) a & b are true.
g) c is true.
h) b & c are true.
i) a, b and c are true.

Answer
i) a, b and c are true.

　

　

19. [ExNx] If Host A sends a packet to Host B over ethernet and Host B is not active:

a) The packet will time out.
b) The packet will be removed by Host A.
c) The NVRAM of Host B will remove the packet.
d) The packet will "die" when it reaches the terminator.
e) The packet will be removed by the token monitor.

Answer
d) The packet will "die" when it reaches the terminator.


思科认证考试（ＣＣＮＡ）考试模拟题２０—３９及答案


Questions

20. [TxNx] If Host A sends a packet to Host B over token ring, and Host B is not active:

a) The packet will time out.
b) The packet will be removed by Host A.
c) The NVRAM of Host B will remove the packet.
d) The packet will "die" when it reaches the terminator.
e) The packet will be removed by the token monitor.

21. [TxNx] If Host A sends a packet to Host B over token ring: Host A dies after transmitting, and Host B is not active:

a) The packet will time out.
b) The packet will be removed by Host A.
c) The NVRAM of Host B will remove the packet.
d) The packet will "die" when it reaches the terminator.
e) The packet will be removed by the Active monitor.

22. [FxNx] BECN and FECN are:

a) Used to provide keepalives in a Frame Relay environment
b) Used to provide error checking in a Frame Relay environment
c) Used to provide congestion information in a Frame Relay environment
d) Used to provide flow control parameters in a Frame Relay environment
e) BECN and FECN are not used in a Frame Relay environment.

23. [RxNx] Which of the following are benefits of a Link-State routing protocol? (Choose all that apply.)

a) Allows the use of a more robust addressing scheme.
b) Allows for a larger scalable network
c) Reduces convergence time
d) Allows "supernetting"
e) All of the above.

24. [OxNx] Which of the following are reasons for the OSI model?

a) Standardizes interfaces
b) Allows modular engineering
c) Facilitates learning and teaching
d) All of the above.

25. [RxNx] Which of the following is NOT a ROUTING protocol:

a) OSPF
b) RIP
c) IPX
d) EIGRP
e) NLSP

26. [RxNx] Which statement is NOT true about link state protocols:

a) Link state advertisements are sent to all routers in an area.
b) Each router executes the SPF algorithm.
c) Link state routers keep a topological database of the network.
d) Link state routers include the originating router s routing table.
e) Link state routers know of possible alternate paths to a particular network.

27. [RxNx] Which of the following would NOT appear in a routing table?

a) Next hop address
b) Interface Port references
c) MAC address
d) Network address
e) Metrics

28. [OxNx] Which statement is true of the Datalink OSI layer ?

a) 802.3 is the MAC sub layer.
b) No such thing
c) MAC sublayer provides the connection to the network layer.
d) MAC sublayer uses SAPS to access the network layer.
e) SAP sublayer uses the MAC layer to access the LAN medium.

29. [RINx] Given the IP address of 193.243.12.43 and a subnet mask of 255.255.255.128, what is the subnet address?

a) 194.243.12.32
b) 193.243.0.0
c) 194.243.12.43
d) 193.243.12.128
e) None of the above.

30. [CxNx] Cisco uses a naming convention to identify frame types. Which four of the following mappings are correct?

Cisco_name = Common_name
a) cisco_II = Ethernet_II
b) arpa = Ethernet_II
c) sap = Ethernet_802.3
d) sap = Ethernet_802.2 LLC
e) Novell Ether = Ethernet_802.2 LLC
f) cisco_802 = Ethernet_802.2 LLC
g) snap = Token Ring Snap
h) snap = Ethernet_SNAP

31. [RxNx] In order to communicate throughout an internetwork, which of the following are required. Choose Two.
a) The use of a routable protocol such as NetBEUI or LAT
b) A hierarchical naming scheme server such as DNS
c) A host file at each communicating device
d) A two part network addressing scheme such as Network/Host
e) The use of a routable protocol such as IP or IPX
f) The use of a routable protocol such as TCP or IPX

32. [CxNx] What is the default route on an IP network? Choose one.

a) This is the route that will be chosen first by IP for delivery of a datagram.
b) The address of the nearest downstream neighbor in a Token ring network.
c) At the router, it is the route used to direct frames for which the next hop has not been explicitly listed in the routing table.
d) Any static route listing in a routing table.
e) When all conditions are equal, the best route for delivery of IP datagrams.

33. [CxNx] A caret symbol (^) inserted into a failed command indicates which of the following. Choose one.
e) The router can switch faster.

Answer
a) Moves, Adds and Changes are made simpler.
b) There is less administrative overhead.
d) It limits broadcasts domains.

If a workstation moves there is a good chance the move is within the same VLAN. If we have a good design of a single subnet within each VLAN there will be no need to reconfigure the workstation with a new layer 3 address. Each VLAN defines a broadcast domain.

38. [SxNx] The Catalyst 5000 uses which switching mode?

a) Cut-through
b) Store and forward
c) Fast switching
d) Choice a and b
e) Choice a and c

Answer
b) Store and forward

Store and forward mode receives the complete frame before forwarding takes place. After the destination and source addresses are read the cyclic redundancy check is performed, the frame is forwarded. Switch latency is dependent upon frame size.

Cut-through, on the other hand, starts forwarding the frame as soon as the destination address is read. This mode reduces latency in the switch.

39. [OxNx] Which of the following layers defines data representation?

a) Application Layer 7
b) Presentation Layer 6
c) Session Layer 5
d) Transport Layer 4
e) Network Layer 3
f) Data Link Layer 2
g) Physical Layer 1

Answer
b) Presentation Layer 6
思科认证考试（ＣＣＮＡ）考试模拟题４０—５９及答案


Questions
40. [OxNx] Which of the following layers sends and receives binary information?

a) Application Layer 7
b) Presentation Layer 6
c) Session Layer 5
d) Transport Layer 4
e) Network Layer 3
f) Data Link Layer 2
g) Physical Layer 1

41. [OxNx] Which of the following layers provides end to end connections?

a) Application Layer 7
b) Presentation Layer 6
c) Session Layer 5
d) Transport Layer 4
e) Network Layer 3
f) Data Link Layer 2
g) Physical Layer 1


42. [OxNx] Which of the following layers would most likely provide connection oriented service.

a) Application Layer 7
b) Presentation Layer 6
c) Session Layer 5
d) Transport Layer 4
e) Network Layer 3
f) Data Link Layer 2
g) Physical Layer 1

43. [OxNx] Which of the following layers controls access to the media?

a) Application Layer 7
b) Presentation Layer 6
c) Session Layer 5
d) Transport Layer 4
e) Network Layer 3
f) Data Link Layer 2
g) Physical Layer 1

44. [OxNx] Which of the following layers defines network addressing and determines the best path?

a) Application Layer 7
b) Presentation Layer 6
c) Session Layer 5
d) Transport Layer 4
e) Network Layer 3
f) Data Link Layer 2
g) Physical Layer 1

45. [OxNx] Raw data is converted to segments at which layer?

a) Application Layer 7
b) Presentation Layer 6
c) Session Layer 5
d) Transport Layer 4
e) Network Layer 3
f) Data Link Layer 2
g) Physical Layer 1

46. [OxNx] Segments are converted to Datagrams at which layer?

a) Application Layer 7
b) Presentation Layer 6
c) Session Layer 5
d) Transport Layer 4
e) Network Layer 3
f) Data Link Layer 2
g) Physical Layer 1

47. [OxNx] Datagrams are converted to frames at which layer?

a) Application Layer 7
b) Presentation Layer 6
c) Session Layer 5
d) Transport Layer 4
e) Network Layer 3
f) Data Link Layer 2
g) Physical Layer 1

48. [OxNx] Frames are converted to Bits at which layer?

a) Application Layer 7
b) Presentation Layer 6
c) Session Layer 5
d) Transport Layer 4
e) Network Layer 3
f) Data Link Layer 2
g) Physical Layer 1

49. [OxNx] Which of the following could be a feature of a connection-oriented service?

a) Flow Control
b) "Three-Way" hand shake
c) Error checking
d) Windowing
e) All of the above

50. [OxNx] With a connection-oriented service a host will ACK (Acknowledge) with: (Answer all that apply)

a) The last (SEQ) sequence number received from the remote host
b) The next expected (SEQ) sequence number from the remote host
c) The last ACK number from the remote host
d) The current SEQ number from the remote host "plus" 1
e) None of the above

51. [OxNx] Simple Network Management Protocol uses what numeric value, in decimal, of the destination port field of the User Datagram Protocol (UDP) header?

a) 20
b) 21
c) 23
d) 69
e) 161

52. [OxNx] The first segment of the "Three-Way Handshake" will most likely carry an ACK of (Choose the best answer):

a) 1
b) The SEQ number of the remote host "plus" 1
c) 0
d) There is no ACK.
e) A randomly generated number

53. [OxNx] Which one of the following layers "best" describes the ability of the upper layers to gain independence over LAN media access?


a) Application Layer 7
b) Presentation Layer 6
c) Session Layer 5
d) Transport Layer 4
e) Network Layer 3
f) Data Link Layer 2
g) Physical Layer 1
h) MAC sublayer
i) LLC sublayer

54. [OxNx] The Media Access Control (MAC) address is made up of the following two parts.

a) Vendor Code
b) Network Address
c) Host Address
d) Serial Number
e) No such address

55. [OxNx] Which one of the following describes the process of a TCP/IP host learning a remote host MAC address?

a) ARP (Address Resolution Protocol)
b) SLARP (Serial Line Address Resolution Protocol)
c) RARP (Reverse Address Resolution Protocol)
d) IARP (Inverse Address Resolution Protocol)
e) MOP (Maintenance Operation Protocol)

56. [OxNx] What is the major difference between the Ethernet version 2 frame and the 802.3 frame?

a) 802.3 frame uses a two-byte Length field where Ethernet describes type.
b) 802.3 frame uses a two-byte field for sequence numbers where Ethernet describes Type.
a) All stations with AA contained in their MAC addresses would receive this frame.
b) All stations would receive this frame, because it acts like a broadcast.
c) The encapsulated protocol contained in the frame must be IP.
d) The encapsulated protocol contained in the frame is proprietary.
e) None of the above.

Answer
d) The encapsulated protocol contained in the frame is proprietary.

Refer to the following capture:



The above capture is Cisco s proprietary Cisco Discovery Protocol (CDP).

　

59. [RINx] What Cisco feature of RIP will reduce convergence time?

a) Cisco uses full horizons as opposed to split horizons
b) The hold down timer is not activated
c) Event triggered updates are used
d) Infinity is 10 instead of 16
e) There is no Cisco feature to enhance the performance of IP RIP

　

Answer
c) Event triggered updates are used
Cisco uses triggered updates with IP RIP in addition to the periodic updates. Refer to the following outline that organizes the major routing protocols. Details of these routing protocols are will be addressed in later editions.

I. Interior Routing Protocols

A. Distance Vector

RIP
Cisco’s IGRP
Novell’s IPX RIP
Appletalk RTMP
B. Link State

OSPF
IS-IS
NLSP
C. Hybrid

Cisco’s EIGRP
II. Exterior Routing Protocols

A. BGP4
B. EOP

To distinguish between Distance Vector and Link State I ask students to answer the following three questions:

What does the routing protocol talk ?
When does the routing protocol talk ?
Who does the routing protocol talk ?

Distance Vector talks the entire routing table to directly connected neighbors (less split horizon) periodically!

Link State talks just the state of the link to all neighbors when the state of the link changes. I like to use the following question in class to differentiate between distance vector and link state routing protocols.

What protocol are you using if your mother calls you every night to let you know that everyone in the family is alive ?

Suppose you make an agreement with your mother to call you just when there is a death in the family ?

Suppose Mom dies?
思科认证考试（ＣＣＮＡ）考试模拟题６０—７１及答案


Questions
60. [RINx] What condition does Serial 0 down & protocol up represent?

a) The interface is disconnected but keep alives are being received
b) The interface is working properly but keep alives are not being received
c) The interface is bad and should be replaced
d) The interface is working correctly.
e) Condition not possible





61.[CxNx] What command correctly displays the running configuration file?

a) show configuration
b) show running-configuration
c) show active-configuration file
d) write terminal
e) all of the above





62. [RINx] What is the purpose of TTL?

a) Prevent routing loops
b) Prevents Timely Telnet Losses
c) Remind engineers that life is short
d) To prevent IP datagrams from living long and fruitful lives
e) To prevent IP datagrams that are caught in a routing loop from traversing the network forever.





63. [RINx] Which should be the subnet mask for a class C address if 62 hosts are required?

a) 255.255.255. 192
b) 255.255.192.0
c) 0.0.0.192
d) 255.255.255.62
e) none of the above



64. [CxNx] After the configuration command is used, when does it become effective?

a) immediately
b) after the router is rebooted
c) after you exit the configuration mode
d) depends on the change that is made
e) All of the above



65. [RxNx] Which one of the following is true concerning IPX load balancing?

a) Activated by default
b) Must be configured
c) IPX does not load balance
d) Requires a Novell File Server
e) None of the above



66. [BxNx] What is the purpose of spanning tree?

a) Prevents bridging loops
b) Prevents routing loops
c) Cisco supported feature that can be used per VLAN
d) Can be initiated on any routed interface
e) All of the above



Questions 67 - 71 refer to the following diagram and information.



The above figure represents a frame-relay network with PVC’s configured for a hub and spoke design with corresponding DLCI numbers. Assume all connections are with the serial 0 interface. Please refer to the above figure for questions 67-71.

67. [FINx] Given the following configuration for Router A:

Router_a(config)#interface s0

Router_a(config-if)#encapsulation

frame-relay

Router_a(config-if)#frame-relay

lmi-type ansi

Router_a(config-if)#frame-relay map ip

172.16.1.2 100

Router_a(config-if)#frame-relay map ip

172.16.1.3 101

Router_a(config-if)#frame-relay map ip

172.16.1.4 102

Router_a(config-if)#frame-relay map ip

172.16.1.5 103

Router_a(config-if)#frame-relay map ip

172.16.1.6 104

Router_a(config-if)#ip address

172.16.1.1 255.255.255.0
Which of the following is the proper configuration
for Router F?

a)

Router_f(config)#interface s0

Router_f(config-if)#encapsulation

frame-relay

Router_f(config-if)#frame-relay

lmi-type ansi
b)
Router_f(config)#interface s0

Router_f(config-if)#encapsulation

frame-relay

Router_f(config-if)#frame-relay

lmi-type ansi

Router_f(config-if)#ip address

172.16.1.6 255.255.255.0
c)

Router_f(config)#interface s0

Router_f(config-if)#encapsulation

frame-relay

Router_f(config-if)#frame-relay

lmi-type ansi

Router_f(config-if)#ip address

172.16.1.6 255.255.255.0
Router_f(config-if)#frame-relay

map ip 172.16.1.1 104
d)

Router_f(config)#interface s0

Router_f(config-if)#encapsulation

frame-relay

Router_f(config-if)#frame-relay

lmi-type ansi

Router_f(config-if)#ip address

172.16.1.6 255.255.255.0

Router_f(config-if)#frame-relay

map ip 172.16.1.1 604
e)

Router_f(config)#interface s0

Router_f(config-if)#encapsulation

frame-relay

Router_f(config-if)#frame-relay

lmi-type ansi

Router_f(config-if)#ip address

172.16.1.6 255.255.255.0

Router_f(config-if)#frame-relay

map ip 172.16.1.6 604




68. [FINx] Given the following configuration for Router A:

Router_a(config)#interface s0

Router_a(config-if)#encapsulation

frame-relay ietf

Router_a(config-if)#frame-relay

map ip 172.16.1.2 100

Router_a(config-if)#frame-relay

map ip 172.16.1.3 101

Router_a(config-if)#frame-relay

map ip 172.16.1.4 102

Router_a(config-if)#frame-relay

map ip 172.16.1.5 103

Router_a(config-if)#frame-relay

map ip 172.16.1.6 104

Router_a(config-if)#ip address

172.16.1.1 255.255.255.0
Which of the following is the proper configuration for Router F?
LMI

Does not have to match end to end this is communication between the local router and the local frame relay switch

Encapsulation

This parameter needs to match end to end.

Frame map statement

The ip address here needs to be the next hop address and the DLCI number needs to be the local DLCI.

The local DLCI for Router F is 604
The next hop address is Router A 172.16.1.1
Encapsulation is Cisco the default
思科认证考试（ＣＣＮＡ）考试模拟题７２—７８及答案

Questions
72. [xINx] The size of a window in a TCP segment establishes what? (Choose one.)

a) The maximum number of bytes that a single frame may not exceed
b) The allowable bandwidth for this TCP session
c) The number of octets that the receiver must be willing to accept
d) The number of 32-bit words in the header
e) The number of octets that the sender is willing to accept



73. [xINx] Which protocols are best described as connection-oriented and reliable? (Choose two.)

a) UDP
b) IP
c) TCP
d) IPX
e) TCP over IP
f) UDP over IP



74. [xINx] A Telnet session to a remote host would be addressed to what port number at the remote host? (Choose one.)

a) UDP port 53
b) TCP port 53
c) UDP port 21
d) TCP port 21
e) UDP port 161
f) TCP port 23



75. [xINx] TCP "source" port number(s): (Choose the one that best describes.)

a) Depends on the application being accessed on the destination host.
b) Depends on the application running on the source host.
c) Are usually assigned by the source host, and are typically some number greater than 1023.
d) Are assigned by the source host and are usually one of the "well known" port numbers.
e) Must be negotiated by the sender and receiver during session setup.



76. [xINx] In a TCP acknowledgment, the ack number refers to: (Choose one.)

a) A sequential number beginning with 1, and incremented by 1 with each exchange, that identifies this exchange of packets as being complete
b) The number of the packet expected next
c) The number of the packet expected next, plus 1
d) A number agreed upon at session establishment, which will be used by the receiver to indicate a successful exchange of packets
e) TCP does not use acknowledgments.





Reference the diagram and configurations below for Questions 77 and 78:



Router_C#sh run

Building configuration...

Current configuration:

!

version 11.2

!

hostname Router_C

!

!

appletalk routing

ipx routing 0060.09c3.df60

!

interface Ethernet0

ip address 172.16.1.1 255.255.255.0

appletalk cable-range 100-105 103.243

appletalk zone right

ipx network DAD

!

interface Ethernet1

no ip address

shutdown

!

interface Serial0

ip unnumbered Ethernet0

appletalk cable-range 120-120 120.17

appletalk zone left

ipx network AD

clockrate 56000

!

interface Serial1

no ip address

shutdown

!

router igrp 100

network 172.16.0.0

!

no ip classless

!!

line con 0

line aux 0

line vty 0 4

login

!

end

Router_B#sh run

Building configuration...

Current configuration:

!

version 11.3

no service password-encryption

!

hostname Router_B

!

!

appletalk routing

ipx routing 0007.7816.fe54

!

interface Loopback0

ip address 172.17.1.1 255.255.255.0

!

interface Serial0

ip unnumbered Loopback0

no ip mroute-cache

appletalk cable-range 130-130 130.81

appletalk zone right

ipx network CAD

no fair-queue

!

interface Serial1

ip unnumbered Loopback0

appletalk cable-range 120-120 120.125

appletalk zone left

ipx network AD

!

interface Serial2

no ip address

shutdown

!

interface Serial3

no ip address

shutdown

!

interface TokenRing0

no ip address

shutdown

!

interface BRI0

no ip address

shutdown

!

router igrp 100

network 172.17.0.0

!

ip classless

!

!

!

!

!

line con 0
line aux 0

line vty 0 4

login

!

end

Router_A#sh run

Building configuration...

Current configuration:

!

version 11.3

no service password-encryption

!

hostname Router_A

!

!

appletalk routing

ipx routing 0010.7b15.bd41

!

interface Ethernet0/0

ip address 10.1.1.1 255.255.255.0

appletalk cable-range 106-110 106.17

appletalk zone left

ipx network BAD

!

interface Serial0/0

ip unnumbered Ethernet0/0

no ip mroute-cache

appletalk cable-range 130-130 130.37

appletalk zone right

ipx network CAD

clockrate 56000

!

interface TokenRing0/0

no ip address

shutdown

ring-speed 16

!

interface FastEthernet1/0

no ip address

shutdown

!

router igrp 100

network 10.0.0.0

!

ip classless

!!

line con 0

line aux 0

line vty 0 4

login

!

end
77. [RxNx] What routing protocols are configured?

a) EIGRP, IGRP, RIP
b) IGRP RTMP IPX NLSP
c) IPX RIP, IGRP, RTMP
d) EIGRP, RTMP, IPX RIP
e) IPX RIP, IGRP



78. [RXNx] The Serial 0/0 IPX encapsulation of Router_A is:

a) Novell-ether
b) SAP
c) ARPA
d) SNAP
e) Can not be determined
f) HDLC

CCNA试题72-78答案

72. [xINx] The size of a window in a TCP segment establishes what? (Choose one.)
no ip mroute-cache

appletalk cable-range 130-130 130.37

appletalk zone right

ipx network CAD

clockrate 56000

!

interface TokenRing0/0

no ip address

shutdown

ring-speed 16

!

interface FastEthernet1/0

no ip address

shutdown

!

router igrp 100

network 10.0.0.0

!

ip classless

!!

line con 0

line aux 0

line vty 0 4

login

!

end


77. [RxNx] What routing protocols are configured?

a) EIGRP, IGRP, RIP
b) IGRP RTMP IPX NLSP
c) IPX RIP, IGRP, RTMP
d) EIGRP, RTMP, IPX RIP
e) IPX RIP, IGRP

Answer
c) IPX RIP, IGRP, RTMP

Appletalk s RTMP and Novell s IPX RIP are the default routing protocols.

Refer to the following routing tables of Router C:

Router_C#sh ip route

Codes: C - connected, S - static, I - IGRP,

R - RIP, M - mobile, B - BGP, D - EIGRP,

EX - EIGRP external, O - OSPF,

IA - OSPF inter area,

N1 - OSPF NSSA external type 1,

N2 - OSPF NSSA external type 2,

E1 - OSPF external type 1,

E2 - OSPF external type 2, E - EGP,

i - IS-IS, L1 - IS-IS level-1,

L2 - IS-IS level-2,

* - candidate default

U - per-user static route, o - ODR

Gateway of last resort is not set

I 10.0.0.0/8 [100/10576] via 172.17.1.1,

00:00:03, Serial0

172.16.0.0/24 is subnetted, 1 subnets

C 172.16.1.0 is directly connected,

Ethernet0

172.17.0.0/16 is variably subnetted,

2 subnets, 2 masks

I 172.17.1.0/32 [100/8976]

via 172.17.1.1,

00:00:03, Serial0

I 172.17.0.0/16 [100/8976]

via 172.17.1.1,

00:00:03, Serial0

Router_C#sh app route

Codes: R - RTMP derived, E - EIGRP derived,

C - connected, A - AURP

S - static P - proxy

4 routes in internet

The first zone listed for each entry is its

default (primary) zone.

C Net 100-105 directly connected,

Ethernet0, zone righ
R Net 106-110 [2/G] via 120.125, 2 sec,

Serial0, zone left

C Net 120-120 directly connected,

Serial0, zone left

R Net 130-130 [1/G] via 120.125, 2 sec,

Serial0, zone right

Router_C#sh ipx route

Codes: C - Connected primary network,

c - Connected secondary network

S - Static, F - Floating static,

L - Local (internal), W - IPXWAN

R - RIP, E - EIGRP, N - NLSP,

X - External, A - Aggregate
s - seconds, u - uses

4 Total IPX routes. Up to 1 parallel

paths and 16 hops allowed.

No default route known.

C AD (HDLC), Se0

C DAD (NOVELL-ETHER), Et0

R BAD [13/02] via

AD.0007.7816.fe54, 28s, Se0

R CAD [07/01] via

AD.0007.7816.fe54, 28s, Se0


78. [RXNx] The Serial 0/0 IPX encapsulation of Router_A is:

a) Novell-ether
b) SAP
c) ARPA
d) SNAP
e) Can not be determined
f) HDLC

Answer
f) HDLC

The default encapsulation for a serial interface is HDLC.

Refer to the IPX routing table below:

Router_A#sh ipx route

%SYS-5-CONFIG_I: Configured from

console by console

Codes: C - Connected primary network,

c - Connected secondary network

S - Static, F - Floating static,

L - Local (internal), W - IPXWAN

R - RIP, E - EIGRP, N - NLSP,

X - External, A - Aggregate

s - seconds, u - uses, U - Per-user static

4 Total IPX routes. Up to 1 parallel

paths and 16 hops allowed.

No default route known.

C BAD (NOVELL-ETHER), Et0/0

C CAD (HDLC), Se0/0

R AD [07/01] via

CAD.0007.7816.fe54, 89s, Se0/0

R DAD [13/02] via

CAD.0007.7816.fe54, 89s, Se0/

thanks!!