Discovery 2 : Chapter 1

1. 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 

2. What are three main types of high-bandwidth connection options used by medium- to large-sized businesses? (Choose three.) 
• DSL 
• cable modem 
• Ethernet 
• metro Ethernet 
• T1 
• T3 

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

4. Which of the following start the test of destination reachability? 
• echo request issued by source 
• echo reply issued by source 
• echo request issued by destination 
• echo reply issued by destination 

5. 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 

6. 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 

7. 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 specifications and rules for how devices communicate over an IP network 
• the standards for cabling and wiring for local Ethernet networks 

8. 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 

9. 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 

10. 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 

11. What feature allows network devices to be scalable? 
• a fixed number of interfaces 
• ease of repair 
• modularity 
• low maintenance requirements 
• low cost 

12. 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# traceroute 
• Router# nslookup 
• Router# ping 
• Router# telnet 

13. Which network utility helps determine the location of network problems and identifies routers that packets travel across? 
• ping 
• ipconfig 
• traceroute 
• ixp 

14. What interconnects the Internet backbone? 
• gateway routers 
• IXPs 
• POPs 
• satellite dishes 

15. What units are used to measure Internet bandwidth? 
• bits per second 
• bytes per second 
• hertz 
• megabytes per second 
• packets per second 

16. 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 colocation 
• Tier 1 ISP services 

17. 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 connect a business to an ISP 
• to provide data communication services to ISP customers 
• to monitor network performance and connection status of ISP clients 

18. When did the Internet become available for use by businesses and consumers? 
• 1979 
• 1984 
• 1991 
• 1999 
• 2000 

19. What was the original purpose of the Internet? 
• voice communication 
• marketing 
• research 
• commerce 

20. 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

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