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ICND 2 > PPP, MLPPP, Frame Relay > Flashcards

PPP, MLPPP, Frame Relay Flashcards

1
Q

A layer 2 encapsulation commonly used on leased lines, which supports authentication, compression, error checking and correction, and a logical multilink interface

A

Point-to-Point Protocol (PPP)

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2
Q

The default Layer 2 encapsulation found on Cisco serial interfaces.

A

High-Level Data Link Control (HDLC)

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3
Q

A type of authentication used by PPP that sends the PAP password across the network in clear text

A

Password Authentication Protocol (PAP)

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4
Q

A type of authentication used by PPP that sends a hash over the network instead of the actual password

A

Challenge Handshake Authentication Protocol (CHAP)

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5
Q

A protocol used by PPP to setup, maintain, and teardown a connection.

A

Link Control Protocol

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6
Q

The protocols used to negotiate the configuration of protocols being used over a PPP link

A

Network Control Protocols (NCPs)

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7
Q

What command would configure PPP on serial link interface 1/1?

A

encapsulation PPP

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8
Q

What command would show you the type of encapsulation used on serial interface 1/1?

A

show interface s1/0

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9
Q

What command configures PAP with the username of “papserver” and a password of “pappass” in global configuration mode?

A

username papserver password pappass

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10
Q

What command configures the PAP server for serial interface 1/0 on Router 1? What command configures the connected router R2 serial interface 1/0 to use PAP through this connection with a username of papuser?

A

ppp authentication pap ppp pap sent-username papuser password pappass

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11
Q

What command configures a router to use CHAP?

A

ppp authentication chap

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12
Q

What command allows you to configure Stac compression on serial interface 1/0 of R1?

A

compress stac

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13
Q

What command will allow you to verify the compression of a ping (ex. ping 10.1.1.1 size 1500)?

A

show compress

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14
Q

What command allows you to set up error detection on serial interface 1/0 of R1?

A

ppp reliable-link

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15
Q

What command allows you to verify the configuration of error detection on R1 serial interface 1/0?

A

show interface s1/0

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16
Q

What command would allow you to logically combine two physical serial links between R1 and R2 into a virtual interface, giving us extra bandwidth and load balancing?

After the multilink i created, what needs to be configured for interface multilink 1?

A

interface multilink 1

ip address

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17
Q

Four serial interfaces with two serial links are grouped together into a multilink between R1 and R2. R1’s S 1/0 has an IP address of 10.1.1.30 /30. The interface multilink command was issued on this interface and this ip address was taken from the interface to configure it. What commands need to be executed on the other serial interfaces of R1?

A

no ip address ppp multilink group 1

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18
Q

What command allows you to verify the line protocol status of a configured multilink?

A

show ip int brief

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19
Q

What PPP feature does not work well with multilink configuration?

A

Compression

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20
Q

What command creates a logical dialer interface for PPoE client side router?

A

int dialer 1

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21
Q

What command allows R1’s dialer 1 interface to dynamically learn an ip address from the PPoE server (ISP)?

A

ip address negotiated

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22
Q

What protocol is used to dynamically learn an IP address in PPoE?

A

IPCP (IP Control Protocol)

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23
Q

What is the best practice MTU size setting used with PPP?

A
  1. PPP has an 8 byte header
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24
Q

What command allows you to associate the dynamically learned ip address from a PPoE server with dialer pool 10?

A

dialer pool 10

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25
Q

What command allows you to associate an interface with dialer pool 10?

A

ppoe-client dial-pool-number 10

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26
Q

What does spoofing indicate?

A

That the data link operation is being held elsewhere (virtual)

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27
Q

What verification command displays ppoe information regarding the MAC addresses of the remote and local router?

A

show ppoe session

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28
Q

What are the common PPP / PPoE troubleshooting issues?

A

Encapsulation mismatch

Authentication mismatch

Dialer interface misconfiguration

Dialer pool misconfiguration

Clocking on physical interface

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29
Q

What command allows you to verify the DTE / DCE configuration of Serial 0/1/0

A

show controllers

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30
Q

What command allows you to verify that clocking is set on Serial 0/2/0?

A

show run | begin s0/2/0

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31
Q

R1 and R2 are connected with a leased line between them, and R1 was configured to use PPP authentication CHAP. The password is Fred. What command would complete the configuration on R1 so that CHAP can work correctly?

A

username R2 password Fred

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32
Q

Which username must be configured on routers for PPP CHAP authentication?

A

Username that matches hostname of other router

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33
Q

What happens by default when Frame Relay encapsulation is enabled?

A

Physical interface on Cisco router is configured as multipoint

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34
Q

What type of interfaces are preferred in a full-mesh Frame Relay topology?

A

multipoint

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35
Q

When multipoint sub interfaces are used, where should all participating interfaces reside?

A

in the same subnet

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36
Q

What type of topology does Dynamic Multipoint virtual private network typically use?

A

hub and spoke

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37
Q

What happens when the “ppp authentication pap” command is configured?

A

One way, inbound authentication by PAP only

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38
Q

What command would you need to configure for outbound PAP authentication?

A

ppp pap sent-username [user-name] password [password]

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39
Q

What happens if the “ppp authentication chap pap” command is issued on a router interface?

A

It will first attempt to authenticate with CHAP. If CHAP is not supported it will try with PAP

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40
Q

What protocols can a PPoE dialer interface use to automatically obtain an IP address?

A

IPCP

DHCP

PPP

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41
Q

What is a characteristic of a point-to-point sub interface?

A

Each sub interface resides in a different subnet

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42
Q

Which of the following protocols are not used by a PPPoE dialer interface to automatically obtain an IP address when the ip address negotiated command has been issued?

IPCP

DHCP

PPP

SLAAC

EUI-64

A

DHCP

SLAAC

EUI-64

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43
Q

You are configuring PPPoE client on a Cisco router. What commands are you most likely to issue to assign a physical interface to the logical PPPoE dialer?

A

interface fastethernet0/0 pppoe-client dial-pool-number 1

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44
Q

What command configures a dialer interface to obtain its IP address by using either PPP or IP Control Protocol

A

ip address negotiated

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45
Q

A group of physical interfaces that operate under a single interface configuration.

A

dialer rotary group

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46
Q

What value range can the dialer rotary group number be when issuing the interface dialer command?

A

0-255

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47
Q

What protocol does PPP use to negotiate the CHAP authentication method between two routers?

A

Link Control Protocol (LCP)

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48
Q

Does CHAP repeat the authentication procedure at regular intervals throughout a PPP session?

A

Yes

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49
Q

By default, what does CHAP use as its user name?

A

hostname

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50
Q

Frame Relay multipoint subinterfaces can be configured to create multiple ____ connections throughout the Frame Relay cloud.

A

PVC

51
Q

A point-to-point Frame Relay connection is typically used in what kind of topology?

A

hub and spoke

52
Q

What does a point-to-point Frame Relay connection do?

A

connects a single router to a central router through which all WAN traffic will pass

53
Q

What are Frame Relay routers most often connected to?

A

Frame Relay switch

54
Q

What must be done to allow back-to-back Frame Relay to operate across a WAN link?

A

encapsulation frame-relay command on each interface

create subinterfaces

assign data link connection identifier (DLCI) to each sub interface

55
Q

Can be used as a means of load balancing, or distributing traffic across multiple unique PPP links?

A

MLP (multilink PPP) bundle

56
Q

MLP can be implemented over either _____ or _____ links.

A

sychronous asynchronous

57
Q

Before you can assign physical interfaces to a given multilink bundle, what command must you first use to create the bundle?

A

interface multilink [bundle #]

58
Q

Capable of fragmenting and re sequencing datagrams over more than one logical link as described in the PPP Multilink Protocol standard RFC 1990.

A

MLP

59
Q

Once you create the multilink bundle with the interface multilink command, what must you do next?

A

Assign the mulitlink bundle a network host address in interface configuration mode

60
Q

In a multilink bundle does the bundle have to be in the same subnet as the bundle on the remote device to which it will connect?

A

Yes

61
Q

How many interfaces can be configured to participate in the multilink bundle?

A

10

62
Q

What command enables MLP on a physical interface?

A

ppp multilink

63
Q

What command assigns the interface to a multilink bundle?

A

ppp multilink group

64
Q

What enables PPP support over Ethernet services?

A

PPPoE

65
Q

A physical router interface must be assigned to the logical _____ before a connection can be established.

A

PPPoE dialer

66
Q

The “ip address negotiated” command configures the interface to obtain its IP address by using what?

A

PPP or IPCP

67
Q

In order for PAP to be authenticated outbound as well, what command must be configured?

A

ppp pap sent-username [user-name] password [password]

68
Q

CHAP authenticates by using a ____ way handshake.

A

3

69
Q

PAP authenticates by using a ____ way handshake.

A

2

70
Q

_____ is a signaling protocol used between your router (DTE) and the first Frame Relay switch.

A

Local Management Interface (LMI)

71
Q

If LMI is being used, what WAN protocol is being used.

A

Frame Relay

72
Q

Which Layer 2 protocol encapsulation type supports synchronous and asynchronous circuits and has built-in security mechanisms?

HDLC

PPP

X.25

Frame Relay

A

PPP

73
Q

What command is used to verify the DLCI destination address in a Frame Relay static configuration?

A

show frame-relay map

74
Q

Which PPP subprotocol negotiates authentication options?

A

LCP (Link Control Protocol)

75
Q

What two statistics appear in the show frame-relay map output?

A

The value of the local DLCI The status of the PVC that is configured on the router

76
Q

What are two characteristics of Frame Relay point-to-point subinterfaces? (Choose two)

  • They create split-horizon issues
  • They require a unique subnet within a routing domain
  • The emulate leased lines
  • They are ideal for full-mesh topologies
  • They require the use of NBMA options when using OSPF
A

They require a unique subnet within a routing domain

They emulate leased lines

77
Q

Which two options are valid WAN connectivity methods? (Choose two)

PPP

WAP

DSL

L2TPv3

Ethernet

A

PPP

DSL

78
Q

Which two statements about using the CHAP authentication mechanism in a PPP link are true? (Choose two)

  • CHAP uses a two-way handshake
  • CHAP uses a three-way handshake
  • CHAP authentication periodically occurs after link establishment
  • CHAP authentication passwords are sent in plaintext
  • CHAP authentication is performed only upon link establishment
  • CHAP has no protection from playback attacks
A

Chap uses a three way handshake

CHAP authentication periodically occurs after link establishment

79
Q

In CHAP authentication, the authenticator generates a frame and sends it to the initiator. This frame contains a simple text message. The message has no inherent special meaning so it doesn’t matter if anyone intercepts it. The important thing is that after receipt of this message both devices have the same message.

A

Challenge

80
Q

The initiator uses its password (or some other shared secret that the authenticators also knows) to encrypt the challenge text. It then sends the encrypted challenge text back to the authenticator.

A

Response

81
Q

The authencticator performs the same encryption on the challenge text that the initiator did. If the authenticator gets the same result that the initiator sent it in the Response, the authenticator knows that the initiator had the right password when it did its encryption, so the authenticator sends back a Success message. Otherwise it sends a Failure message.

A

Success or Failure

82
Q

What can be done to Frame Relay to resolve split-horizon issues?

A

Create full mesh topology

Configure point-to-point subinterfaces

83
Q

Which two pieces of information are provided by the show controllers serial 0 command?

  • the type of cable that is connected to the interface
  • the uptime of the interface
  • the status of the physical layer of the interface
  • the full configuration of the interface
  • the interface’s duplex settings
A

the type of cable that is connected to the interface

the status of the physical layer of the interface

84
Q

Which part of the PPPoE server configuration contains the information used to assign an IP address to a PPPoE client? virtual template interface DHCP dialer interface AAA authentication

A

dialer interface

85
Q

The output of the show frame-relay pvc command shows “PVC STATUS = INACTIVE”. What does this mean?

A

The PVC is configured correctly on the local switch, but there is a problem on the remote end of the PVC

86
Q

Refer to the exhibit. Hosts in network 192.168.2.0 are unable to reach hosts in network 192.168.3.0. Based on the output from RouterA, what are two possible reasons for the failure? (Choose two.)

A. The cable that is connected to S0/0 on RouterA is faulty.
B. Interface S0/0 on RouterB is administratively down.
C. Interface S0/0 on RouterA is configured with an incorrect subnet mask.
D. The IP address that is configured on S0/0 of RouterB is not in the correct subnet.
E. Interface S0/0 on RouterA is not receiving a clock signal from the CSU/DSU.
F. The encapsulation that is configured on S0/0 of RouterB does not match the encapsulation that is configured on S0/0 of RouterA

A

E. Interface S0/0 on RouterA is not receiving a clock signal from the CSU/DSU.
F. The encapsulation that is configured on S0/0 of RouterB does not match the encapsulation that is configured on S0/0 of RouterA

87
Q

Refer to the exhibit. The show interfaces serial 0/1 command was issued on the R10-1 router.
Based on the output displayed which statement is correct?

A. The cable connected to the serial 0/1 interface of the R10-1 router is a DTE cable.
B. The R10-1 router can ping the router interface connected to the serial 0/1 interface.
C. The clock rate used for interface serial 0/1 of the R10-1 router is 1,544,000 bits per second.
D. The CSU used with the serial 0/1 interface of the R10-1 router has lost connection to the service provider.
E. The interface of the remote router connected to the serial 0/1 interface of the R10-1 router is using the default serial interface encapsulation.

A

E. The interface of the remote router connected to the serial 0/1 interface of the R10-1 router is using the default serial interface encapsulation.

88
Q

What does the frame-relay interface-dlci command configure?

A. local DLCI on the subinterface
B. remote DLCI on the main interface
C. remote DCLI on the subinterface
D. local DLCI on the main interface

A

A. local DLCI on the subinterface

89
Q

Refer to the exhibit. A technician pastes the configurations in the exhibit into the two new routers shown. Otherwise, the routers are configured with their default configurations. A ping from Host1 to Host2 fails, but the technician is able to ping the S0/0 interface of R2 from Host1. The configurations of the hosts have been verified as correct. What is the cause of the problem?

A. The serial cable on R1 needs to be replaced.
B. The interfaces on R2 are not configured properly.
C. R1 has no route to the 192.168.1.128 network.
D. The IP addressing scheme has overlapping subnetworks.
E. The ip subnet-zero command must be configured on both routers.

A

C. R1 has no route to the 192.168.1.128 network.

90
Q

In the Frame Relay network, which IP addresses would be assigned to the interfaces with pointto- point PVCs?
A. DLCI 16 192.168.10.1/24
DLCI 17 192.168.10.1/24
DLCI 99 192.168.10.2/24
DLCI 28 192.168.10.3/24

B. DLCI 16 192.168.10.1 /24
DLCI 17 192.168.11.1/24
DLCI 99 192.168.12.1/24
DLCI 28 192.168.13.1/24

C. DLCI 16 192.168.10.1/24
DLCI 17 192.168.11.1/24
DLCI 99 192.168.10.2/24
DLCI 28 192.168.11.2/24

D. DLCI 16 192.168.10.1/24
DLCI 17 192.168.10.2/24
DLCI 99 192.168.10.3/24
DLCI 28 192.168.10.4/24

A

C. DLCI 16 192.168.10.1/24
DLCI 17 192.168.11.1/24
DLCI 99 192.168.10.2/24
DLCI 28 192.168.11.2/24

91
Q

Which feature does PPP use to encapsulate multiple protocols?

A. NCP
B. LCP
C. IPCP
D. IPXP

A

A. NCP

92
Q

It has become necessary to configure an existing serial interface to accept a second Frame Relay virtual circuit. Which of the following are required to solve this? (Choose three)

A. configure static frame relay map entries for each subinterface network.
B. remove the ip address from the physical interface
C. create the virtual interfaces with the interface command
D. configure each subinterface with its own IP address
E. disable split horizon to prevent routing loops between the subinterface networks
F. encapsulate the physical interface with multipoint PPP

A

B. remove the ip address from the physical interface
C. create the virtual interfaces with the interface command
D. configure each subinterface with its own IP address

93
Q

The command frame-relay map ip 10.121.16.8 102 broadcast was entered on the router.
Which of the following statements is true concerning this command?

A. This command should be executed from the global configuration mode.
B. The IP address 10.121.16.8 is the local router port used to forward data.
C. 102 is the remote DLCI that will receive the information.
D. This command is required for all Frame Relay configurations.
E. The broadcast option allows packets, such as RIP updates, to be forwarded across the PVC.

A

E. The broadcast option allows packets, such as RIP updates, to be forwarded across the PVC.

94
Q

Refer to the exhibit. What is the meaning of the term dynamic as displayed in the output of the show frame-relay map command shown?

A. The Serial0/0 interface is passing traffic.
B. The DLCI 100 was dynamically allocated by the router
C. The Serial0/0 interface acquired the IP address of 172.16.3.1 from a DHCP server
D. The DLCI 100 will be dynamically changed as required to adapt to changes in the Frame Relay cloud
E. The mapping between DLCI 100 and the end station IP address 172.16.3.1 was learned through

A

E. The mapping between DLCI 100 and the end station IP address 172.16.3.1 was learned through

95
Q

What is the purpose of LCP?

A. to perform authentication
B. to negotiate control options
C. to encapsulate multiple protocols
D. to specify asynchronous versus synchronous

A

B. to negotiate control options

96
Q

Users have been complaining that their Frame Relay connection to the corporate site is very slow. The network administrator suspects that the link is overloaded.
Based on the partial output of the Router # show frame relay pvc command shown in the graphic, which output value indicates to the local router that traffic sent to the corporate site is experiencing congestion?

A. DLCI=100
B. last time PVC status changed 00:25:40
C. in BECN packets 192
D. in FECN packets 147
E. in DF packets 0

A

C. in BECN packets 192

97
Q

The network administrator is asked to configure 113 point-to-point links. Which IP addressing scheme best defines the address range and subnet mask that meet the requirement and waste the fewest subnet and host addresses?

A. 10.10.0.0/16 subnetted with mask 255.255.255.252
B. 10.10.0.0/18 subnetted with mask 255.255.255.252
C. 10.10.1.0/24 subnetted with mask 255.255.255.252
D. 10.10.0.0/23 subnetted with mask 255.255.255.252
E. 10.10.1.0/25 subnetted with mask 255.255.255.252

A

D. 10.10.0.0/23 subnetted with mask 255.255.255.252

98
Q

Refer to the exhibit. What does STATUS=ACTIVE refer to in the output of the show frame-relay pvc command?

A. The PVC is experiencing congestion.
B. The Frame Relay switch is correctly programmed with the DLCI and is operational.
C. The router is actively broadcasting to establish a link to the Frame Relay switch.
D. The router is connected to the local Frame Relay switch, but not to the far end device.

A

B. The Frame Relay switch is correctly programmed with the DLCI and is operational.

99
Q

What is the default Local Management Interface frame type transmitted by a Cisco router on a Frame Relay circuit?

A. Q933a
B. B8ZS
C. IETF
D. Cisco
E. ANSI

A

D. Cisco

100
Q

Refer to the exhibit. Which statement describes DLCI 17?

A. DLCI 17 describes the ISDN circuit between R2 and R3.
B. DLCI 17 describes a PVC on R2. It cannot be used on R3 or R1.
C. DLCI 17 is the Layer 2 address used by R2 to describe a PVC to R3.
D. DLCI 17 describes the dial-up circuit from R2 and R3 to the service provider.

A

C. DLCI 17 is the Layer 2 address used by R2 to describe a PVC to R3.

101
Q

Which command displays the CHAP authentication process as it occurs between two routers?

A. debug chap authentication
B. debug authentication
C. debug chap ppp
D. debug ppp authentication

A

D. debug ppp authentication

102
Q

Drag and Drop Question

Drag the Frame Relay acronym on the left to match its definition on the right. (Not all acronyms are used)

A
103
Q

What is the purpose of Inverse ARP?

A. to map a known IP address to a MAC address
B. to map a known DLCI to a MAC address
C. to map a known MAC address to an IP address
D. to map a known DLCI to an IP address
E. to map a known IP address to a SPID
F. to map a known SPID to a MAC address

A

D. to map a known DLCI to an IP address

104
Q

Which command allows you to verify the encapsulation type (CISCO or IETF) for a Frame Relay link?

A. show frame-relay lmi
B. show frame-relay map
C. show frame-relay pvc
D. show interfaces serial

A

B. show frame-relay map

105
Q

Which two statements about using the CHAP authentication mechanism in a PPP link are true? (Choose two.)

A. CHAP uses a two-way handshake.
B. CHAP uses a three-way handshake.
C. CHAP authentication periodically occurs after link establishment.
D. CHAP authentication passwords are sent in plaintext.
E. CHAP authentication is performed only upon link establishment.
F. CHAP has no protection from playback attacks.

A

B. CHAP uses a three-way handshake.
C. CHAP authentication periodically occurs after link establishment.

106
Q

What are two characteristics of Frame Relay point-to-point subinterfaces? (Choose two.)

A. They create split-horizon issues.
B. They require a unique subnet within a routing domain.
C. They emulate leased lines.
D. They are ideal for full-mesh topologies.
E. They require the use of NBMA options when using OSPF.

A

B. They require a unique subnet within a routing domain.
C. They emulate leased lines.

107
Q

What occurs on a Frame Relay network when the CIR is exceeded?

A. All TCP traffic is marked discard eligible.
B. All UDP traffic is marked discard eligible and a BECN is sent.
C. All TCP traffic is marked discard eligible and a BECN is sent.
D. All traffic exceeding the CIR is marked discard eligible.

A

D. All traffic exceeding the CIR is marked discard eligible.

108
Q

Refer to the exhibit.
Which WAN protocol is being used?

A. ATM
B. HDLC
C. Frame Relay
D. PPP

A

C. Frame Relay

109
Q

Which PPP subprotocol negotiates authentication options?

A. NCP
B. ISDN
C. SLIP
D. LCP
E. DLCI

A

E. DLCI

110
Q

A network administrator needs to configure a serial link between the main office and a remote location. The router at the remote office is a non-Cisco router. How should the network administrator configure the serial interface of the main office router to make the connection?

A. Main(config)# interface serial 0/0
Main(config-if)# ip address 172.16.1.1 255.255.255.252
Main(config-if)# no shut
B. Main(config)# interface serial 0/0
Main(config-if)# ip address 172.16.1.1 255.255.255.252
Main(config-if)# encapsulation ppp
Main(config-if)# no shut
C. Main(config)# interface serial 0/0
Main(config-if)# ip address 172.16.1.1 255.255.255.252
Main(config-if)# encapsulation frame-relay
Main(config-if)# authentication chap
Main(config-if)# no shut
D. Main(config)# interface serial 0/0
Main(config-if)#ip address 172.16.1.1 255.255.255.252
Main(config-if)#encapsulation ietf
Main(config-if)# no shut

A

B. Main(config)# interface serial 0/0
Main(config-if)# ip address 172.16.1.1 255.255.255.252
Main(config-if)# encapsulation ppp
Main(config-if)# no shut

111
Q

Which encapsulation type is a Frame Relay encapsulation type that is supported by Cisco routers?

A. IETF
B. ANSI Annex D
C. Q9333-A Annex A
D. HDLC

A

A. IETF

112
Q

What is the result of issuing the frame-relay map ip 192.168.1.2 202 broadcast command?

A. defines the destination IP address that is used in all broadcast packets on DCLI 202
B. defines the source IP address that is used in all broadcast packets on DCLI 202
C. defines the DLCI on which packets from the 192.168.1.2 IP address are received
D. defines the DLCI that is used for all packets that are sent to the 192.168.1.2 IP address

A

D. defines the DLCI that is used for all packets that are sent to the 192.168.1.2 IP address

113
Q

Which command is used to enable CHAP authentication, with PAP as the fallback method, on a serial interface?

A. Router(config-if)# ppp authentication chap fallback ppp
B. Router(config-if)# ppp authentication chap pap
C. Router(config-if)# authentication ppp chap fallback ppp
D. Router(config-if)# authentication ppp chap pap

A

B. Router(config-if)# ppp authentication chap pap

114
Q

What can be done to Frame Relay to resolve split-horizon issues?(Choose two.)

A. Disable Inverse ARP.
B. Create a full-mesh topology.
C. Develop multipoint subinterfaces.
D. Configure point-to-point subinterfaces.
E. Remove the broadcast keyword from the frame-relay map command.

A

B. Create a full-mesh topology.

D. Configure point-to-point subinterfaces.

115
Q

The command show frame-relay map gives the following output:

Serial 0 (up): ip 192.168.151.4 dlci 122, dynamic, broadcast, status defined, active

Which statements represent what is shown?(Choose three.)

A. 192.168.151.4 represents the IP address of the remote router
B. 192.168.151.4 represents the IP address of the local serial interface
C. DLCI 122 represents the interface of the remote serial interface
D. DLCI 122 represents the local number used to connect to the remote address
E. broadcast indicates that a dynamic routing protocol such as RIP v1 can send packets across this PVC
F. active indicates that the ARP process is working

A

A. 192.168.151.4 represents the IP address of the remote router

D. DLCI 122 represents the local number used to connect to the remote address

E. broadcast indicates that a dynamic routing protocol such as RIP v1 can send packets across this PVC

116
Q

At which layer of the OSI model does PPP perform?

A. Layer 2
B. Layer 3
C. Layer 4
D. Layer 5

A

A. Layer 2

117
Q

Which two statistics appear in show frame-relay map output? (Choose two.)

A. the number of BECN packets that are received by the router
B. the value of the local DLCI
C. the number of FECN packets that are received by the router
D. the status of the PVC that is configured on the router
E. the IP address of the local router

A

B. the value of the local DLCI

D. the status of the PVC that is configured on the router

118
Q

Which two pieces of information are provided by the show controllers serial 0 command? (Choose two.)

A. the type of cable that is connected to the interface.
B. The uptime of the interface
C. the status of the physical layer of the interface
D. the full configuration of the interface
E. the interface’s duplex settings

A

A. the type of cable that is connected to the interface.

C. the status of the physical layer of the interface

119
Q

Which type of interface can negotiate an IP address for a PPPoE client?

A. Ethernet
B. dialer
C. serial
D. Frame Relay

A

B. dialer

120
Q

Why did Branch1 router lose WAN connectivity with R1 router?

A. The IP address is misconfigured on PPP multilink interface on the Branch1 router.
B. The PPP multilink group is misconfigured on the anch1 serial interfaces.
C. The PPP multilink group is misconfigured on the R1 serial interfaces.
D. The Branch1 serial interfaces are placed in a shutdown condition.

A

A. The IP address is misconfigured on PPP multilink interface on the Branch1 router.

121
Q

Which statement about the router configurations is correct?

A. PPP PAP is authentication configured between Branch2 and R1.
B. Tunnel keepalives are not configured for the tunnel0 interface on Branch2 and R2.
C. The Branch2 LAN network 192.168.11 0/24 is not advertised into the EIGRP network.
D. The Branch3 LAW network 192.168.10.0/24 is not advertised into the EIGRP network.
E. PPP CHAP is authentication configured between Branch1 and R1.

A

D. The Branch3 LAW network 192.168.10.0/24 is not advertised into the EIGRP network.

122
Q

Why has the Branch3 router lost connectivity with R1?
Use only show commands to troubleshoot because usage of the debug command is restricted on the Branch3 and R1 routers.

A. A PPP chap hostname mismatch is noticed between Branch3 and R1.
B. A PPP chap password mismatch is noticed between Branch3 and R1.
C. PPP encapsulation is not configured on Branch3.
D. The PPP chap hostname and PPP chap password commands are missing on the Branch3 router.

A

A. A PPP chap hostname mismatch is noticed between Branch3 and R1.

123
Q

Why is the Branch2 network 10.1 0.20.0/24 unable to communicate with the Server farm1 network 10.1 0.10.0/24 over the GRE tunnel?

A. The GRE tunnel destination is not configured on the R2 router.
B. The GRE tunnel destination is not configured on the Branch2 router.
C. The static route points to the tunnel0 interface that is misconfigured on the Branch2 router.
D. The static route points to the tunnel0 interface that is misconfigured on the R2 router.

A

C. The static route points to the tunnel0 interface that is misconfigured on the Branch2 router.

ICND 2 (16 decks)

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