CCNA Discovery 2: DsmbISP Chapter 1 Exam Answers v4.0

1. Which network support services team is responsible for testing a new customer connection and for monitoring the ongoing operation of the link?

  • customer service
  • network operations
  • help desk
  • on-site installation

2. Which two things can be determined by using the ping command? (Choose two.)

  • the number of routers between the source and destination device
  • whether or not the destination device is reachable through the network
  • the IP address of the router nearest the destination device
  • the average time it takes a packet to reach the destination and for the response to return to the source
  • the average time it takes each router in the path between source and destination to respond

Explanation:ping command provides feedback on the time between when an echo request was sent to a remote host and when the echo reply was received. This can be a measure of network performance. A successful ping also indicates that the destination host was reachable through the network.

3. What are three main types of high-bandwidth connection options used by medium- to large-sized businesses? (Choose three.)

  • DSL
  • metro Ethernet
  • T1
  • cable modem
  • Ethernet
  • T3

4. Which command generated this output?

  • 1 4 msec 4 msec 4 msec
  • 2 20 msec 16 msec 16 msec
  • 3 16 msec 18 msec 16 msec
  • Router# nslookup
  • Router# ping
  • Router# telnet
  • Router# traceroute

5. Which network support services team identifies whether the client site has existing network hardware and circuits installed?

  • customer service
  • help desk
  • planning and provisioning
  • network operations

6. What units are used to measure Internet bandwidth?

  • bytes per second
  • hertz
  • megabytes per second
  • bits per second
  • packets per second

7. What is the purpose of an RFC?

  • to provide the connection point for multiple ISPs to the Internet
  • to provide data communication services to ISP customers
  • to document the development and approval of an Internet standard
  • to connect a business to an ISP
  • to monitor network performance and connection status of ISP clients

8. What is the maximum T1 transmission speed?

  • 56 kbps
  • 128 kbps
  • 2.4 Mbps
  • 1.544 Mbps

9. When did the Internet become available for use by businesses and consumers?

  • 1979
  • 1984
  • 1999
  • 2000
  • 1991

10. What was the original purpose of the Internet?

  • voice communication
  • commerce
  • marketing
  • research

11. What three support service teams are commonly found within an ISP? (Choose three.)

  • help desk
  • network operations center
  • computer support
  • application readiness
  • planning and provisioning
  • implementation and documentation

12. Which ISP network support systems team will typically contact the customer once a new circuit is ready and guide the customer in setting up passwords and other account information?

  • help desk
  • customer service
  • network operations center
  • on-site installation team
  • planning and provisioning

13. What feature allows network devices to be scalable?

  • a fixed number of interfaces
  • low maintenance requirements
  • low cost
  • ease of repair
  • modularity

14. The IT manager of a medium-sized business wishes to house the company-owned web servers in a facility that offers round-the-clock controlled access, redundant power, and high-bandwidth Internet access. Which ISP service will fulfill this need?

  • web hosting
  • planning and provisioning
  • application hosting
  • Tier 1 ISP services
  • equipment colocation

15. Which network utility helps determine the location of network problems and identifies routers that packets travel across?

  • ping
  • ipconfig
  • traceroute
  • ixp

16. Which of the following start the test of destination reachability?

  • echo request issued by destination
  • echo reply issued by destination
  • echo request issued by source
  • echo reply issued by source

17. Which statement describes a function of a Tier 1 ISP?

  • peers with other similarly sized ISPs to form the global Internet backbone
  • uses the services of Tier 3 ISPs to connect to the global Internet backbone
  • pays Tier 2 ISPs for transit services to connect across continents
  • limits the offered services to small geographic areas

18. At which point do individuals and small businesses connect directly to the ISP network to obtain Internet access?

  • at a POP
  • at an IXP
  • at a Metro Ethernet link
  • on the ISP extranet

19. What information is contained in the numbered RFCs maintained by the IETF?

  • the rules for acceptable use of websites and e-mail
  • the descriptions of various hardware components that connect to the Internet
  • the standards for cabling and wiring for local Ethernet networks
  • the specifications and rules for how devices communicate over an IP network

20. What interconnects the Internet backbone?

  • gateway routers
  • IXPs
  • POPs
  • satellite dishes
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