module 3

Chapter 3

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What results if both PAP and CHAP are enabled on an interface?

Neither method can be used.
PAP and CHAP are used concurrently.
The first method specified is initially requested during link negotiation. X
The second method specified is initially requested during link negotiation.
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Which command creates a local database entry for a username of atlanta and a password of test?

atlanta username test password
username atlanta test
password test username atlanta
username atlanta password test X
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What frame type is the PPP frame format based on?

SDLC
Cisco
HDLC X
ARAP
SLIP
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Which best describes a loopback interface?

the AUX port on the back of a router
a physical interface that never goes down
uses pins 1,2,3,6 of an ethernet cable
a virtual interface that never goes down X
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What provides the ability to build up and tear down multiple Layer 3 protocol sessions over a single data link?

Multicasting
Multilink PPP
Modulation
Multiplexing X
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Which two events occur during the PPP callback operation? (Choose two.)

If the server is not configured for callback, the answering router maintains the initial call. X
If the server is not configured for callback, the answering router disconnects the initial call.
If the server is not configured for callback, the callback client disconnects the initial call.
Authentication only happens during the initial call.
Authentication happens during the initial call and the callback. X
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What type of IP address is obtained when the IOS peer default ip address command is used?

an IP address chosen by the remote client
a predefined IP address X
an unnumbered IP address
an IP helper address
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Which command configures an interface to use TCP header compression if the router receives compressed headers from its link partner?

ip tcp header-compression passive X
compress tcp header-compression
compress tcp-header passive
ip tcp header-compression
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What is the purpose of the IOS async mode interactive command?

allows an EXEC session only
allows a PPP session only
allows an EXEC or PPP session X
allows calls to be establishment on the ASYNC port
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What is the best choice when selecting an interface to be used with an IP unnumbered configuration?

ethernet 0
loopback 0 X
serial 0
interface async 1
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Which two statements best describe MLP? (Choose two)

load balances complete packets to a destination
improves throughput but increases latency
provides load balancing over multiple interfaces X
performs packet fragmentation X
provides load balancing over a single interface
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Which debug command only includes information about CHAP and PAP authentication?

debug ppp negotiation
debug ppp authentication X
debug dialer
debug chap ppp
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What is the default encapsulation type on a dial-up asynchronous link on a Cisco router?

SLIP X
PPP
HDLC
CHAP
ISDN
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Which command configures an interface for PPP encapsulation?

router(config)#ppp encapsulation
router(config-if)#ppp encapsulation
router(config-if)#encapsulation ppp X
router(config)#encapsulation ppp
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Which PPP protocol allows PPP hosts to dynamically negotiate link options including authentication and compression?

NCP
HDLC
LCP X
IPX
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What is the function of the IOS dialer callback-secure command?

produces a secure connection
enables the callback process
defines authentication process
disconnects calls that are not properly configured for callback X
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What results if a callback from a server to a client fails?

Call is retried one time.
Call is never retried. X
Call is retried on user command.
Call is retried periodically.
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Which command will determine that PPP must run on the specified line?

async mode dedicated X
async mode permanent
async mode interactive
async mode autoselect
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Using CHAP, how many times does authentication occur during a PPP session?

one time at the beginning of a session
only when the user requests an additional password
one time at the beginning of a session and one time at the end of the session
randomly during the session X
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Which command will allow an access server's terminal line to provide a PPP session or an EXEC session based on user input?

autoselect interactive
async mode autoselect
autoselect PPP X
async mode permanent
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What is one purpose of the dialer map command?

It specifies the phone number necessary to call the remote router. X
It configures the local username and password database.
It configures the interface for CHAP or PAP.
It determines the authentication method used between two routers.
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Which type of PPP authentication should be used over leased point-to-point lines?

PAP
no authentication should be configured X
CHAP
MS-CHAP
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