Wide Area Networks

Q1: Suppose that you have a customer who has a central HQ and six branch offices. They anticipate adding six more branches in the near future. They wish to implement a WAN technology that will allow the branches to economically connect to HQ and you have no free ports on the HQ router. Which of the following would you recommend?

A PPP

B HDLC

C Frame Relay

D ISDN

Q2: Which of the following encapsulates PPP frames in Ethernet frames and uses common PPP features like authentication, encryption, and compression?

A PPP

B PPPoA

C PPPoE

D Token Ring

Q3: Which of the following uses ATM as the Data Link layer protocol that's terminated at what's known as the DSLAM?

A DSL

B PPPoE

C Frame Relay

D Dedicated T1

E Wireless

Q4: A default Frame Relay WAN is classified as what type of physical network?

A Point-to-point

B Broadcast multi-access

C Non-broadcast multi-access

D Non-broadcast multipoint

Q5: You need to configure a router for a Frame Relay connection to a non-Cisco router. Which of the following commands will prepare the WAN interface of the router for this connection?

A
Router(config-if)#encapsulation frame-relay q933a

B
Router(config-if)#encapsulation frame-relay ansi

C
Router(config-if)#encapsulation frame-relay ietf

D
Router(config-if)#encapsulation frame-relay cisco

Q6: In which of the following technologies is the term HFC used?

A DSL

B PPPoE

C Frame Relay

D Dedicated T1

Q7:
Which encapsulations can be configured on a serial interface?
  1. Ethernet
  2. Token Ring
  3. HDLC
  4. Frame Relay
  5. PPP

A 1 and 4

B 2 only

C 3, 4 and 5

D All of the above

Q8: When a router is connected to a Frame Relay WAN link using a serial DTE interface, how is the clock rate determined?

A Supplied by the CSU/DSU

B By the far end router

C
By the clock rate command

D By the Physical layer bit stream timing

Q9: Which command will display the CHAP authentication process as it occurs between two routers in the network?

A show chap authentication

B show interface serial 0

C debug ppp authentication

D debug chap authentication

Q10: How should a router that is being used in a Frame Relay network be configured to keep split horizon issues from preventing routing updates?

A Configure a separate subinterface for each PVC with a unique DLCI and subnet assigned to the subinterface.

B Configure each Frame Relay circuit as a point-to-point line to support multicast and broadcast traffic.

C Configure many subinterfaces in the same subnet.

D Configure a single subinterface to establish multiple PVC connections to multiple remote router interfaces.

Q11: Which of the following describes an industry-wide standard suite of protocols and algorithms that allows for secure data transmission over an IP-based network that functions at the layer 3 Network layer of the OSI model?

A HDLC

B Cable

C VPN

D IPSec

E xDSL

Q12: The Acme Corporation is implementing dial-up services to enable remote-office employees to connect to the local network. The company uses multiple routed protocols, needs authentication of users connecting to the network, and since some calls will be long distance, needs callback support. Which of the following protocols is the best choice for these remote services?

A 802.1

B Frame Relay

C HDLC

D PPP

E PAP

Q13: Which command is required for connectivity in a Frame Relay network if Inverse ARP is not operational?

A frame-relay arp

B frame-relay map

C frame-relay interface-dci

D frame-relay lmi-type

Q14: When setting up Frame Relay for point-to-point subinterfaces, which of the following must not be configured?

A The Frame Relay encapsulation on the physical interface

B The local DLCI on each subinterface

C An IP address on the physical interface

D The subinterface type as point-to-point

Q15:
Which WAN encapsulations can be configured on an asynchronous serial connection?
  1. PPP
  2. ATM
  3. HDLC
  4. SDLC
  5. Frame Relay

A 1 and 2

B 2 and 4

C 3, 4 and 5

D All of the above

Q16: Which of the following describes the creation of private networks across the Internet, enabling privacy and tunneling of non-TCP/IP protocols?

A HDLC

B Cable

C VPN

D IPSec

E xDSL

Q17:
Which of the following command options are displayed when you use the Router# show frame-relay ? command?
  1. dlci
  2. neighbors
  3. lmi
  4. pvc
  5. map

A 1 only

B 2 and 4

C 3, 4 and 5

D All of the above


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