Thứ Ba, 4 tháng 5, 2010

CCNA S2- Version 4.1 Chaper 1 100%


1. When does a host device issue an ICMP echo request?
*to initiate a ping to determine if a destination address is reachable
to respond to a DNS name query
to broadcast its identity to its locally connected neighbors
to request the MAC address of a destination IP address

2. What is the maximum T1 transmission speed?
56 kbps
128 kbps
*1.544 Mbps
2.4 Mbps
3. 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

4. Which network support services team is responsible for testing a new customer connection and for monitoring the ongoing operation of the link?
customer service
help desk
network operations
on-site installation

5. Which network support services team identifies whether the client site has existing network hardware and circuits installed?
customer service
help desk
network operations
*planning and provisioning

6. What are three main types of high-bandwidth connection options used by medium- to large-sized businesses? (Choose three.)
cable modem
*metro Ethernet

7. What feature enables network devices to be scalable?
a fixed number of interfaces
ease of repair
low maintenance requirements
low cost

8. 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

9. Which two things can be determined by using the ping command? (Choose two.)
the number of routers between the source and destination device
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
*whether or not the destination device is reachable through the network
the average time it takes each router in the path between source and destination to respond

10. 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
*equipment collocation
Tier 1 ISP services

11. What was the original purpose of the Internet?
voice communication

12. What is the purpose of an RFC?
to provide the connection point for multiple ISPs to the Internet
*to document the development and approval of an Internet standard
to indicate a contract that a customer signs when purchasing co-location services
to document agreements between an ISP and the customer

13. What units are used to measure Internet bandwidth?
*bits per second
bytes per second
megabytes per second
packets per second

14. What three support service teams are commonly found within an ISP? (Choose three.)
*help desk
computer support
application readiness
*network operations center
*planning and provisioning
implementation and documentation

15. 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

16. What interconnects the Internet backbone?
satellite dishes

17. Refer to the exhibit. A host is having problems maintaining a connection to a server at Which statement best describes the output of the ping command?
The server is shut down.
The server has no route back to the host.
Two routers along the path are not responding to pings.
*Some packets made it to the destination.

18. Refer to the exhibit. Host A cannot connect to the web server at Based on the output of the tracert command, which device is most likely causing the problem?
Router A
Router B
Router C
Router D
Router E
*Router F

19. Which network utility helps determine the location of network problems and identifies routers that packets travel across?
Ping services are not supported on the destination.

2 nhận xét:

  1. Hi.
    Thanks for your work)))
    You forgot to mark correct answer in #4

    4. Which network support services team is responsible for testing a new customer connection and for monitoring the ongoing operation of the link?
    customer service
    help desk
    **network operations
    on-site installation

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