DsmbISP Chapter 1 Exam Answers

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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