DISCOVERY 2 CHAPTER 1

Q.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

Q.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

Q.3 What is the maximum T1 transmission speed?

56 kbps
128 kbps
1.544 Mbps
2.4 Mbps


Q.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

Q.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

Q.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

Q.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

Q.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

Q.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

Q.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

Q.11 What feature allows network devices to be scalable?

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

Q.12 Which command generated this output?

1 12.0.0.2 4 msec 4 msec 4 msec
2 23.0.0.3 20 msec 16 msec 16 msec
3 34.0.0.4 16 msec 18 msec 16 msec

• Router# traceroute 34.0.0.4 
• Router# nslookup 34.0.0.4 
• Router# ping 34.0.0.4 
• Router# telnet 34.0.0.4

Q.13 Which network utility helps determine the location of network problems and identifies routers that packets travel across?

• ping 
• ipconfig  
• traceroute  
• ixp

Q.14 What interconnects the Internet backbone?

gateway routers
IXPs
POPs
satellite dishes


Q.15 What units are used to measure Internet bandwidth?

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

Q.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

Q.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

Q.18 When did the Internet become available for use by businesses and consumers?

• 1979 
• 1984 
• 1991  
• 1999 
• 2000

Q.19 What was the original purpose of the Internet?

• voice communication 
• marketing  
• research 
• commerce

Q.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