ITN 107 CH. 7-10 EXAM REVIEW UPDATED ACTUAL
QUESTIONS AND CORRECT ANSWERS
Question:
You are asked to add a resource record in the DNS
namespace for a website your company wants to publish.
Which of the following entries will you make?
Answer:
www.company.com A IN 14440 209.165.200.5
The proper format is resource name (www.company.com), record type (A), class
code (IN), TTL (14400), Data (209.168.200.5). The record type of A is the address
record and points a host name to its IP address. The class code IN means the
record is allowed on the internet. The TTL is the time-to-live and represents the
time a server can hold the record in its cache. The data is the IP address mapped
to the host.
Question:
Which of the following devices are most commonly used
to connect a LAN to an ISP for broadband services?
(Select TWO.)
Answer:
DSL modem
A DSL modem is the hardware device used to connect the local area network
(LAN) to an Internet service provider (ISP). DSL is a broadband technology
transported over copper POTS (plain old telephone service) cable that can
provide high-speed Internet alone (SDSL) or Internet combined with voice (ADSL,
VDSL).
Cable modem
The cable modem is the hardware device used to connect the local area network
(LAN) to a cable Internet service provider (ISP). Cable is a broadband technology
transported over a coaxial cable that can provide high-speed Internet, TV, and
voice via a single cable connection.
Question:
Torino receives a call from a SOHO client who says her
computer is not working. He goes to her office and
checks the network settings. He notices that the default
gateway entry is blank, yet he can ping the router. Once
he enters the default gateway, the problem is solved.
What did the client mean when she said her computer is
not working?
Answer:
The computer had no internet access
If the default gateway is not set, the computer will not be able to send traffic
outside of the local network. He can ping the default gateway because the router
interface is part of the local network. The address on the router interface is the
,default gateway but the computer does not know this unless it is explicitly
configured either manually or automatically using DHCP.
Question:
You buy a cable that has RJ-45 connectors. For what type
of transmission will the cable be used?
Answer:
Ethernet
Ethernet patch cables are copper twisted pair cables using RJ-45 connectors. RJ-
45 connectors are constructed to accept up to four pairs of individual wires.
Question:
A client contacted you to request your help in
researching and supplying the hardware necessary to
implement a SOHO solution at his new home-based
business.
Which of the following SOHO router features will simplify
IP address configuration on the private network for both
wired and wireless clients?
Answer:
DHCP server
An integral feature of a SOHO router is the DHCP (Dynamic Host Configuration
Protocol) server, which automatically assigns IP address information to network
clients with either wired or wireless connections. The host device is configured to
obtain IP address information automatically.
Question:
Makani is participating in an on-the-job training program
at work. He is learning how to configure computers in a
network. He is told to use private IP addresses because
all organizations could use them without conflict since
they are not routable.
If the addresses are not routable, he wonders, how will
the computers have internet access?
Answer:
A NAT router will translate a private address to a public one
A NAT router translates internal private IP addresses to public addresses enabling
the internal devices to have access to the internet. The NAT router keeps the
translated information in a table to reverse the translation for returning traffic.
Question:
You want to setup a separate network at home that is
accessible from the internet. You want it to be isolated
from your personal network, so you lease an IPv6
address from the ISP. When you configure the interface
IDs of the devices on the network, which bits in the IPv6
, address will you be modifying?
Answer:
The last 64 bits of an IPv6 address
The last 64 bits of an IPv6 address represent the interface ID. A simplistic analogy
is to say that the interface ID of an IPv6 address is equivalent to the host portion
of an IPv4 address.
Question:
Kwan, a fifth-grade teacher, has been learning about
computers but does not know much about networking.
He found a hub in the supply closet and decided to
create a small network in his classroom consisting of a
file/application server, 10 relatively new computers, and a
printer. The students often complain that the computers
are slow, but one student blames it on the network. What
can Kwan do to eliminate complaints?
Answer:
Replace the hub with a switch
Hubs employs older technology, operate at 10/100 Mbps, and share the
bandwidth with all the devices connected to it. This means signals will collide and
delay transmissions as the network recovers. A modern-day switch has 1 Gbps
ports and every port is capable of operating at that speed because the
bandwidth is not shared. There are network design considerations that need to be
taken into account but a switch will outperform a hub in all cases.
Question:
Akello uses his computer to download a document from
the internet. What role does his computer play as
opposed to the computer from which he is downloading
the document? Select two.
Answer:
His computer is a client
In a client/server model, the device initiating the request is the client and the
machine that responds to the request, and services that request, is the server. The
client application is the browser Akello is using, and the system supplying the
resource is the web server.
The computer from which he downloads the document is a server
In a client/server model, the device initiating the request is the client and the
machine that responds to the request, and services that request, is the server. The
client application is the browser Akello is using, and the system supplying the
resource is the web server.
Question:
Vishalini rented a small office to offer bookkeeping
services. She needs DHCP, wired, wireless, and file
sharing capabilities, as well as a switch to connect three
computers. However, her technology budget is limited.
QUESTIONS AND CORRECT ANSWERS
Question:
You are asked to add a resource record in the DNS
namespace for a website your company wants to publish.
Which of the following entries will you make?
Answer:
www.company.com A IN 14440 209.165.200.5
The proper format is resource name (www.company.com), record type (A), class
code (IN), TTL (14400), Data (209.168.200.5). The record type of A is the address
record and points a host name to its IP address. The class code IN means the
record is allowed on the internet. The TTL is the time-to-live and represents the
time a server can hold the record in its cache. The data is the IP address mapped
to the host.
Question:
Which of the following devices are most commonly used
to connect a LAN to an ISP for broadband services?
(Select TWO.)
Answer:
DSL modem
A DSL modem is the hardware device used to connect the local area network
(LAN) to an Internet service provider (ISP). DSL is a broadband technology
transported over copper POTS (plain old telephone service) cable that can
provide high-speed Internet alone (SDSL) or Internet combined with voice (ADSL,
VDSL).
Cable modem
The cable modem is the hardware device used to connect the local area network
(LAN) to a cable Internet service provider (ISP). Cable is a broadband technology
transported over a coaxial cable that can provide high-speed Internet, TV, and
voice via a single cable connection.
Question:
Torino receives a call from a SOHO client who says her
computer is not working. He goes to her office and
checks the network settings. He notices that the default
gateway entry is blank, yet he can ping the router. Once
he enters the default gateway, the problem is solved.
What did the client mean when she said her computer is
not working?
Answer:
The computer had no internet access
If the default gateway is not set, the computer will not be able to send traffic
outside of the local network. He can ping the default gateway because the router
interface is part of the local network. The address on the router interface is the
,default gateway but the computer does not know this unless it is explicitly
configured either manually or automatically using DHCP.
Question:
You buy a cable that has RJ-45 connectors. For what type
of transmission will the cable be used?
Answer:
Ethernet
Ethernet patch cables are copper twisted pair cables using RJ-45 connectors. RJ-
45 connectors are constructed to accept up to four pairs of individual wires.
Question:
A client contacted you to request your help in
researching and supplying the hardware necessary to
implement a SOHO solution at his new home-based
business.
Which of the following SOHO router features will simplify
IP address configuration on the private network for both
wired and wireless clients?
Answer:
DHCP server
An integral feature of a SOHO router is the DHCP (Dynamic Host Configuration
Protocol) server, which automatically assigns IP address information to network
clients with either wired or wireless connections. The host device is configured to
obtain IP address information automatically.
Question:
Makani is participating in an on-the-job training program
at work. He is learning how to configure computers in a
network. He is told to use private IP addresses because
all organizations could use them without conflict since
they are not routable.
If the addresses are not routable, he wonders, how will
the computers have internet access?
Answer:
A NAT router will translate a private address to a public one
A NAT router translates internal private IP addresses to public addresses enabling
the internal devices to have access to the internet. The NAT router keeps the
translated information in a table to reverse the translation for returning traffic.
Question:
You want to setup a separate network at home that is
accessible from the internet. You want it to be isolated
from your personal network, so you lease an IPv6
address from the ISP. When you configure the interface
IDs of the devices on the network, which bits in the IPv6
, address will you be modifying?
Answer:
The last 64 bits of an IPv6 address
The last 64 bits of an IPv6 address represent the interface ID. A simplistic analogy
is to say that the interface ID of an IPv6 address is equivalent to the host portion
of an IPv4 address.
Question:
Kwan, a fifth-grade teacher, has been learning about
computers but does not know much about networking.
He found a hub in the supply closet and decided to
create a small network in his classroom consisting of a
file/application server, 10 relatively new computers, and a
printer. The students often complain that the computers
are slow, but one student blames it on the network. What
can Kwan do to eliminate complaints?
Answer:
Replace the hub with a switch
Hubs employs older technology, operate at 10/100 Mbps, and share the
bandwidth with all the devices connected to it. This means signals will collide and
delay transmissions as the network recovers. A modern-day switch has 1 Gbps
ports and every port is capable of operating at that speed because the
bandwidth is not shared. There are network design considerations that need to be
taken into account but a switch will outperform a hub in all cases.
Question:
Akello uses his computer to download a document from
the internet. What role does his computer play as
opposed to the computer from which he is downloading
the document? Select two.
Answer:
His computer is a client
In a client/server model, the device initiating the request is the client and the
machine that responds to the request, and services that request, is the server. The
client application is the browser Akello is using, and the system supplying the
resource is the web server.
The computer from which he downloads the document is a server
In a client/server model, the device initiating the request is the client and the
machine that responds to the request, and services that request, is the server. The
client application is the browser Akello is using, and the system supplying the
resource is the web server.
Question:
Vishalini rented a small office to offer bookkeeping
services. She needs DHCP, wired, wireless, and file
sharing capabilities, as well as a switch to connect three
computers. However, her technology budget is limited.
