CCDA FAQ: WAN Design
Q1. What type of WAN technology provides a dedicated connection from the service provider?
a. Circuit-switched data connection
b. Leased lines
c. Packet switched
d. Cell switched
Q2. What type of topology suffers from a single point of failure?
a. Hub-and-spoke topology
b. Full-mesh topology
c. Partial-mesh topology
d. None of the above
Q3. What kind of topology requires that each site be connected to every other site in the cloud?
a. Hub-and-spoke topology
b. Full-mesh topology
c. Partial-mesh topology
d. All of the above
Q4. Which two of the following best describe WAN backup over the Internet deployments?
a. Private WAN
b. Redundancy for primary WAN connection
c. VPLS
d. Best-effort performance
Q5. Which VPN application gives users connectivity over shared networks?
a. Intranet VPN
b. Extranet VPN
c. Access VPN
d. None of the above
Q6. What are three types of WAN topologies that can be used with Cisco enterprise architectures in the WAN?
a. Ring
b. Full mesh
c. Partial mesh
d. Hub and spoke
Q7. The service provider plays an active role in enterprise routing with what kind of VPNs?
a. VPDNs
b. Peer to peer
c. L2TP
d. L2F
Q8. Which backup option provides an additional virtual circuit for use if needed?
a. Secondary WAN link
b. Shadow PVC
c. Dial backup
d. Load sharing
Q9. Which WAN backup option uses load sharing in addition to providing backup services?
a. Dial backup
b. Shadow PVC
c. Secondary WAN link
d. ISDN with DDR
Q10. What of the following best describes the difference between a small branch and a medium branch?
a. Small branches use dual external switches.
b. Medium branches use single ASA firewall.
c. Small branches use single ASA firewall.
d. Medium branches use external L2 switches.
Q11. How many users are supported in a large branch design?
a. Up to 50
b. Between 50 to 100
c. Between 100 to 1000
d. Between 200 to 5000
Q12. What two methods are used to enable private networks over public networks?
a. IPsec
b. PKI
c. GRE
d. PSTN
Q13. What is not a factor for WAN architecture selection?
a. Ease of management
b. Ongoing expenses
c. Spanning-tree inconsistencies
d. High availability
Q14. Which Layer 3 tunneling technique enables basic IP VPNs without encryption?
a. GRE
b. IPsec
c. IPsec
d. IKE
Q15. Which of the following is not recommended approach for designing WANs?
a. Analyze customer requirements
b. Characterize the existing network
c. Design the new WAN
d. Implement new WAN
Q16. What MAN/WAN architecture uses the Internet with site-to-site VPNs?
a. Private WAN
b. ISP service
c. SP MPLS/IP VPN
d. Private WAN with self-deployed MPLS
Q17. Which WAN backup method does not use the Internet as a transport?
a. IPsec tunnel
b. GRE tunnel
c. Shadow PVC
d. GET VPN
Q18. What branch design uses ASA firewalls? Select all that apply.
a. Small branch
b. Medium branch
c. Large branch
d. Secure branch
Q19. What WAN/MAN architecture is usually reserved for large enterprises that are willing to make substantial investments in equipment and training?
a. Private WAN
b. Private WAN with self-deployed MPLS
c. ISP service
d. SP MPLS/IP VPN
Q20. Match each branch profile design with its description.
a. Small branch
b. Medium branch
c. Large branch
d. Enterprise teleworker
i. Single access router
ii. Cable modem router
iii. Pair of access routers
iv. Pair of firewalls
Q21. Which of the following are examples of packet- and cell-switched technologies used in the enterprise edge?
a. Frame Relay and ATM
b. ISDN and T1
c. Cable and DSL
d. Analog voice and T1
Q22. Typical remote-access network requirements include which of the following? (Select all that apply.)
a. Best-effort interactive and low-volume traffic patterns
b. Voice and VPN support
c. Connections to the enterprise edge using Layer 2 WAN technologies
d. Server load balancing
Q23. Which VPN infrastructure is used for business partner connectivity and uses the Internet or a private infrastructure?
a. Access VPN
b. Intranet VPN
c. Extranet VPN
d. Self-deployed MPLS VPN
Q24. What IPsec technology in the enterprise uses routers along with NHRP and mGRE?
a. IPsec direct encapsulation
b. Easy VPN
c. GET VPN
d. DMVPN
Q25. What backup option allows for both a backup link and load-sharing capabilities using the available bandwidth?
a. Dial backup
b. Secondary WAN link
c. Shadow PVC
d. IPsec tunnel
Q26. Which common factor is used for WAN architecture selection that involves eliminating single points of failure to increase uptime and growth?
a. Network segmentation
b. Ease of management
c. Redundancy
d. Support for growth
Q27. What WAN/MAN architecture is provided by the service provider and has excellent growth support and high availability?
a. Private WAN
b. ISP service
c. SP MPLS/IP VPN
d. Private MPLS
Q28. Which Cisco IOS software family has been designed for low-end to mid-range LAN switching?
a. IOS T Releases 12.3, 12.4, 12.3T, and 12.4T
b. IOS S Releases 12.2SE and 12.2SG
c. IOS XR
d. IOS SX
Q29. When designing enterprise branch architecture, which of the following are common network components? (Select all that apply.)
a. Routers supporting WAN edge connectivity
b. Switches providing the Ethernet LAN infrastructure
c. Network management servers
d. IP phones
Q30. Which branch design supports 50 to 100 users and provides Layer 3 redundancy features?
a. Small branch
b. Medium branch
c. Large branch
d. Enterprise teleworker
Q31. Which WAN transport technologies use packet switching to transfer data?
Q32. What is the line speed of a T3 leased line?
Q33. The Cisco Product Selection Tool can be found where?
Q34. If a customer is concerned about the cost of a WAN network, what technology would you recommend for a backup connection to a 128-Kb leased line?
Q35. What are the two criteria for a good WAN design?
Q36. Identify the switching method on the router that has the following qualities: an inbound
Q37. Which devices support optimum switching?
Q38. How many DS0s are there in a T1 line?
Q39. What class of Cisco routers is a 2600?
Q40 What is the first step in provisioning a Frame Relay circuit?
Q41. How many DS0s are needed to form a T1 line?
Q42. When using Frame Relay, which Cisco IOS version would best support a Voice over Frame Relay (VoFR) implementation?
Q43. Which traffic shaping feature would best support the VoFR implementation?
Q44. When determining the Frame Relay CIR for the central office, the CCDA reviews all the traffic from the remote offices that needs to be transferred to the central office. Which step in provisioning a Frame Relay network would help determine how much bandwidth is required?
Q45. Which switching method matches packets with its route cache?
Q46. Which WAN technology uses the Public Switched Telephone Network (PSTN)?
Q47. What term is used to describe the process of passing a packet internally from one router’s interface to the other?
Q48. Which packet-switching technology is used on unreliable WAN connections?
Q49. Frame Relay uses which two layers of the OSI model?
Q50. What router component would be used on a 2600 to provide an integrated CSU/DSU for a T1 connection?
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