Discovery 2 Chapter 1 V4.1 TUESDAY, AUGUST 18, 2009 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
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Discovery 2 Chapter 1 V4.1
TUESDAY, AUGUST 18, 2009
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 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
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
CCNA Discovery Working at a Small-to-Medium Business or ISP (Version 4.1) Chapter 2 With 100%
Accurate Answers
1. Which two functions are provided by the upper layers of the OSI model? (Choose two.)
placing electrical signals on the medium for transmission
**initiating the network communication process
**encrypting and compressing data for transmission
segmenting and identifying data for reassembly at the destination
choosing the appropriate path for the data to take through the network
2. Which is a function of the transport layer of the OSI model?
routes data between networks
converts data to bits for transmission
**delivers data reliably across the network using TCP
formats and encodes data for transmission
transmits data to the next directly connected device
3. Which common Layer 1 problem can cause a user to lose connectivity?
incorrect subnet mask
incorrect default gateway
**loose network cable
NIC improperly installed
4. Which three command line utilities are most commonly used to troubleshoot issues at
Layer 3? (Choose three.)
**ping
a packet sniffer
Telnet
**ipconfig
**Traceroute
5. Which address is used by the router to direct a packet between networks?
source MAC address
destination MAC address
source IP address
**destination IP address
6. What is the correct encapsulation order when data is passed from Layer 1 up to Layer 4
of the OSI model?
**bits, frames, packets, segments
frames, bits, packets, segments
packets, frames, segments, bits
segments, packets, frames, bits
7. What are two goals of the ISP help desk? (Choose two.)
conserving support resources
**network optimization
competitive scalability
**customer retention
sales of network services
8. In what two ways do Level 1 and Level 2 help desk technicians attempt to solve a
customer's problems? (Choose three.)
**talking to the customer on the telephone
upgrading hardware and software
**using various web tools
making an onsite visit
installing new equipment
**with remote desktop sharing applications
9. A customer calls the help desk about setting up a new PC and cable modem and being
unable to access the Internet. What three questions would the technician ask if the
bottom-up troubleshooting approach is used? (Choose three.)
**Is the NIC link light blinking?
What is the IP address and subnet mask?
Can the default gateway be successfully pinged?
**Is the network cable properly attached to the modem?
**Is the Category 5 cable properly connected to the network slot on the PC?
Can you access your e-mail account?
10. A customer calls to report a problem accessing an e-commerce web site. The help desk
technician begins troubleshooting using a top-down approach. Which question would the
technician ask the customer first?
**Can you access other web sites?
Is there a firewall installed on your computer?
What is your IP address?
Is the link light lit on your NIC card?
11. Which statement describes the process of escalating a help desk trouble ticket?
The help desk technican resolves the customer problem over the phone and closes the trouble ticket.
Remote desktop utilities enable the help desk technician to fix a configuration error and close the
trouble ticket.
**After trying unsuccessfully to fix a problem, the help desk technician sends the trouble ticket to the
onsite support staff.
When the problem is solved, all information is recorded on the trouble ticket for future reference.
12. What are two functions of the physical layer of the OSI model? (Choose two.)
adding the hardware address
**converting data to bits
encapsulating data into frames
**signal generation
routing packets
13. A customer calls the ISP help desk after setting up a new PC with a cable modem but
being unable to access the Internet. After the help desk technician has verified Layer 1 and
Layer 2, what are three questions the help desk technician should ask the customer?
(Choose three.)
**What is your subnet mask?
**What is your IP address?
Is the NIC link light blinking?
**Can you ping the default gateway?
Is the network cable properly attached to the cable modem?
Is the network cable correctly connected to the network port on the PC?
14. Which scenario represents a problem at Layer 4 of the OSI model?
An incorrect IP address on the default gateway.
A bad subnet mask in the host IP configuration.
**A firewall filtering traffic addressed to TCP port 25 on an email server.
An incorrect DNS server address being given out by DHCP.
15. What are two basic procedures of incident management? (Choose two.)
**opening a trouble ticket
using diagnostic tools to identify the problem
surveying network conditions for further analysis
configuring new equipment and software upgrades
**adhering to a problem-solving strategy
e-mailing a problem resolution to the customer
16. Which level of support is supplied by an ISP when providing managed services?
Level 1
Level 2
**Level 3
Level 4
17. What is the first step that is used by a help desk technician in a systematic approach to
helping a customer solve a problem?
identify and prioritize alternative solutions
isolate the cause of the problem
**define the problem
select an evaluation process
18. A network technician has isolated a problem at the transport layer of the OSI model.
Which question would provide further information about the problem?
**Do you have a firewall that is configured on your PC?
Do you have a link light on your network card?
Is your PC configured to obtain addressing information using DHCP?
What default gateway address is configured in your TCP/IP settings?
Can you ping http://www.cisco.com?
19. An ISP help desk technician receives a call from a customer who reports that no one at
their business can reach any websites, or get their e-mail. After testing the communication
line and finding everything fine, the technician instructs the customer to run nslookup from
the command prompt. What does the technician suspect is causing the customer's
problem?
improper IP address configuration on the host
hardware failure of the ISR used to connect the customer to the ISP
bad cables or connections at the customer site
**failure of DNS to resolve names to IP addresses
20. Which layers of the OSI model are commonly referred to as the upper layers?
**application, presentation, session
application, session, network
presentation, transport, network
presentation, network, data link
session, transport, network
CCNA Discovery: Working at a Small-to-Medium Business or ISP (Version 4.1) Chapter 3 With 100%
Accurate Answers
1. Which two benefits can be gained by locating network equipment in a
telecommunications closet, rather than in a user area? (Choose two.)
faster communication speeds
**improved physical security
more resistant to hacker attempts
**centralized cable management
less electrical usage
2. Which three issues should be noted on the technician's site survey report? (Choose
three.)
**unlabeled cables
only two power outlets per wall in each room
**poor physical security of network devices
horizontal cabling runs under 100 meters
**lack of UPS for critical devices
two users sharing the same computer
3. Which two types of cable are used for initial router configuration? (Choose two.)
serial cable
**rollover cable
straight-through cable
crossover cable
patch cable
**console cable
4. In addition to the inventory sheet, what other information about the hosts and
networking equipment should be documented by the on-site technician while performing
the site survey?
any obsolete office equipment being stored
all product keys for site license software
**any planned growth anticipated in the near future
the memory requirements for installed application software
5. Refer to the exhibit. What type of device is used to connect two networks?
hub
**router
switch
access point
6. It is said that the goal for availability of a communications system is "five-9s". What is
meant by this?
A down time of .00001% is unacceptable.
**A network needs to be available 99.999% of the time.
Five percent of all network expense covers 99% of user requirements.
The most critical time for network availability is from 9:00 to 5:00 p.m. five days a week.
The best time to do maintenance on a network is from 5:00 p.m. to 9:00 a.m. five days a week.
7. What three things are included in a logical topology document? (Choose three.)
the location of cables, computers, and other peripherals
**the path that the data takes through a network
the wireless signal coverage area
the wiring closet and access point locations
**the device names and Layer 3 addressing information
**the location of routing, network address translation, and firewall filtering
8. Which device has the ability to break up broadcast and collision domains?
repeater
hub
**router
switch
9. Why is it important to review the results of an on-site survey report with the customer
before beginning the network design?
to inform the customer of how much time the upgrade will take
to discuss the implementation schedule for the new equipment
**to verify that the report accurately describes the current network and any plans for expansion
to layout the new network design and discuss possible equipment upgrades and replacements
10. A client requires a networking device that is capable of expansion to suit growing
network demands. What type of device will suit this requirement?
a networking device with ports that can be activated and deactivated
**a networking device with a modular physical configuration
a networking device with the ability to be turned off remotely
a networking device with a cost per port that is as high as possible
11. What does the use of redundant network components supply to a network?
scalability
manageability
compatibility
**reliability
12. What is the benefit for a company to use an ISR router?
**An ISR provides the functionality of a switch, router, and firewall in one device.
ISRs use a PC operating system for routing traffic, thus simplifying configuration and management.
An ISR is immune to security attacks by hackers and so replaces all other network security measures.
ISRs make routing decisions at OSI Layer 7, thus providing more intelligence to the network than do
other routers.
13. Which three items are typically found in an MDF? (Choose three.)
user workstations
**switches and routers
fax machines
**network equipment racks
**the point of presence
copier
14. What are two advantages of having ISP-managed services? (Choose two.)
does not require leasing costs for service
**can guarantee up to 99.999% availability
eliminates the need for data backup
**increases availability of help desk services
does not require a Service Level Agreement
15. A manufacturing company is in the process of a network upgrade. Which two
statements are true about the phases of the upgrade process? (Choose two.)
**Phase 1 is used to determine network requirements.
Phase 2 includes creating an analysis report.
**Phase 3 is based on an implementation schedule that allows extra time for unexpected events.
Phase 4 is where prototypes are created and tested.
Phase 5 includes identifying and addressing any weaknesses in the design.
16. When designing a network upgrade, which two tasks should the onsite technician
perform? (Choose two.)
configure the servers and routers prior to delivery
upgrade the network operating system and all client operating systems
**investigate and document the physical layout of the premises
document the final design for approval by the customer
**perform a site survey to document the existing network structure
17. What is the term for the location at the customer premise where the customer network
physically connects to the Internet through a telecommunications service provider?
backbone area
**point of presence
network distribution facility
intermediate distribution frame
18. Refer to the exhibit. Which type of twisted pair cable is used between each device?