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- Question
Which WAN encapsulations can be configured on an asynchronous serial connection?
- PPP
- ATM
- HDLC
- SDLC
- Frame Relay
Options- A. 1 and 2
- B. 2 and 4
- C. 3, 4 and 5
- D. All of the above
- Correct Answer
- 1 and 2
ExplanationPlease do not freak out because ATM is an answer to this question. ATM is not covered in depth on the CCNA exam. PPP is mostly used for dial-up (async) services, but ATM could be used as well, though it typically is not used anymore since PPP is so efficient. - 1. Which encapsulations can be configured on a serial interface?
- Ethernet
- Token Ring
- HDLC
- Frame Relay
- PPP
Options- A. 1 and 4
- B. 2 only
- C. 3, 4 and 5
- D. All of the above Discuss
- 2. 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?
Options- A. 802.1
- B. Frame Relay
- C. HDLC
- D. PPP
- E. PAP Discuss
- 3. 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?
Options- A. PPP
- B. HDLC
- C. Frame Relay
- D. ISDN Discuss
- 4. A default Frame Relay WAN is classified as what type of physical network?
Options- A. Point-to-point
- B. Broadcast multi-access
- C. Non-broadcast multi-access
- D. Non-broadcast multipoint Discuss
- 5. What is the maximum distance running the lowest data rate for 802.11a?
Options- A. About 100 feet
- B. About 175 feet
- C. About 300 feet
- D. About 350 feet Discuss
- 6. In which of the following technologies is the term HFC used?
Options- A. DSL
- B. PPPoE
- C. Frame Relay
- D. Dedicated T1 Discuss
- 7. When setting up Frame Relay for point-to-point subinterfaces, which of the following must not be configured?
Options- 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 Discuss
- 8. 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?
Options- A. HDLC
- B. Cable
- C. VPN
- D. IPSec
- E. xDSL Discuss
- 9. Which of the following describes the creation of private networks across the Internet, enabling privacy and tunneling of non-TCP/IP protocols?
Options- A. HDLC
- B. Cable
- C. VPN
- D. IPSec
- E. xDSL Discuss
- 10. 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?
Options- 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 Discuss
Wide Area Networks problems
Search Results
Correct Answer: 3, 4 and 5
Explanation:
Ethernet and Token Ring are LAN technologies and cannot be configured on a serial interface. PPP, HDLC, and Frame Relay are layer 2 WAN technologies that are typically configured on a serial interface.
Correct Answer: PPP
Explanation:
PPP is your only option, as HDLC and Frame Relay do not support these types of business requirements. PPP provides dynamic addressing, authentication using PAP or CHAP, and callback services.
Correct Answer: Frame Relay
Explanation:
The key is "there are no free ports" on your router. Only Frame Relay can provide a connection to multiple locations with one interface, and in an economical manner no less.
Correct Answer: Non-broadcast multi-access
Explanation:
Frame Relay, by default, is a non-broadcast multi-access (NBMA) network, which means that broadcasts, such as RIP updates, will not be forwarded across the link by default.
Correct Answer: About 175 feet
Explanation:
The IEEE 802.11a standard's lowest data rate is 6Mbps, but it can run from a distance of about 175 feet.
Correct Answer: Dedicated T1
Explanation:
In a modern network, hybrid fibre-coaxial (HFC) is a telecommunications industry term for a network that incorporates both optical fiber and coaxial cable to create a broadband network.
Correct Answer: An IP address on the physical interface
Explanation:
It is very important to remember when studying the CCNA exam objectives, and when configuring Frame Relay with point-to-point subinterfaces, that you do not put an IP address on the physical interface.
Correct Answer: IPSec
Explanation:
IPSec is 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.
Correct Answer: VPN
Explanation:
A allows the creation of private networks across the Internet, enabling privacy and tunneling of non-TCP/IP protocols. A VPN can be set up across any type of link.
Correct Answer: Router(config-if)#encapsulation frame-relay ietf
Explanation:
If you have a Cisco router on one side of a Frame Relay network and a non-Cisco router on the other side, you would need to use the Frame Relay encapsulation type of IETF. The default is Cisco encapsulation, which means that a Cisco router must be on both sides of the Frame Relay network.
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