DsmbISP Chapter 1 - CCNA Discovery: Working at a Small-to-Medium Business or ISP - Version 4.1 2013

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 is the maximum T1 transmission speed? 56 kbps 128 kbps 1.544 Mbps 2.4 Mbps

3	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

4	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

5	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

6	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

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

8	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

9	Which network utility helps determine the location of network problems and identifies routers that packets travel across? ping ipconfig tracert netstat nslookup

10	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

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

12	Refer to the exhibit. Host A cannot connect to the web server at 192.168.100.2. 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

13	Refer to the exhibit. A host is having problems maintaining a connection to a server at 192.168.100.2. 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. Ping services are not supported on the destination.

14	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

15	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

16	What interconnects the Internet backbone? MDFs IXPs POPs satellite dishes

17	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

18	What was the original purpose of the Internet? voice communication marketing research commerce

19	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