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Chapter 17 (Quiz Questions)
Comptia A+ Guide to maintaining your PC, 7th Edition
59
Computer Networking
04/11/2013

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Term
Dial-up networking, cable modem, fiber-optic, Fast Ethernet
Definition
Place the following networking technologies in the order of their highest speed, from slowest to
fastest: Fiber optic, dial-up networking, cable modem, Fast Ethernet
Term
ADSL uses one upload speed from the consumer to an ISP and a faster download speed. SDSL uses
equal bandwidths in both directions.
Definition
What is the difference between ADSL and SDSL?
Term
Satellite
Definition
Among satellite, cable modem, and DSL, which technology experiences more latency?
Term
Regular telephone
Definition
When using DSL to connect to the Internet, the data transmission shares the cabling with what
other technology?
Term
Television
Definition
When using a cable modem to connect to the Internet, the data transmission shares the cabling
with what other technology?
Term
802.11n
Definition
Which version of 802.11 technologies can use two antennae at both the access point and the
network adapter?
Term
WPA
Definition
Which wireless encryption standard is stronger, WEP or WPA?
Term
RJ-45
Definition
What is the name of the port used by an Ethernet cable?
Term
RJ-11
Definition
What is the name of the port used by a
dial-up modem?
Term
Gigabit Ethernet
Definition
If you want to upgrade your 100BaseT Ethernet network so that it will run about 10 times the
current speed, what technology would you use?
Term
100 meters or 328 feet
Definition
What is the maximum length of a cable on a 100BaseT network?
Term
The transmission speed of the network which is 100 Mbps.
Definition
What does the 100 in the name 100BaseT indicate?
Term
STP is more reliable
Definition
Which type of networking cable is more reliable, STP or UTP?
Term
STP CAT5e is more expensive because it is shielded
Definition
Which is more expensive, UTP CAT5e cabling or STP CAT5e cabling?
Term
Look for the label imprinted on the cable
Definition
How can you tell the difference between a patch cable and a crossover cable by examining the
cable?
Term
DHCP server
Definition
What type of server serves up IP addresses to computers on a network?
Term
NAT
Definition
What type of protocol is used to present a public IP address to computers outside the LAN to
handle requests to use the Internet from computers inside the LAN?
Term
32 bits
Definition
How many bits are in an IPv4 IP address?
Term
Port 25
Definition
What port does the SMTP protocol use by default?
Term
HTTPS
Definition
Which protocol does a Web server use when transmissions are encrypted for security?
Term
DNS server
Definition
What type of server resolves fully qualified domain names to IP addresses?
Term
15 characters
Definition
What is the maximum length of a NetBIOS name?
Term
Hosts file
Definition
What is the name of the file that keeps associations between computer names and IP addresses
on the local computer?
Term
IMAP
Definition
What protocol is replacing the POP protocol used to receive email?
Term
16 million, 65,000, and 254
Definition
Approximately how many IP addresses are available for a single Class A IP license? Class B?
Class C?
Term
Private IP addresses
Definition
What are IP addresses called that begin with 10, 172.16 or 192.168?
Term
Class B
Definition
In what class is the IP address 185.75.255.10?
Term
Class C
Definition
In what class is the IP address 193.200.30.5?
Term
Public IP addresses are licensed and authorized to use the Internet. Private IP addresses are not
authorized or licensed to use the Internet. A computer with a private IP address uses a proxy server
to access the Internet.
Definition
Describe the difference between public and private IP addresses. If a network is using private IP
addresses, how can the computers on that network access the Internet?
Term
IP addresses that begin with 192.168 are private IP addresses.
Definition
Why is it unlikely that you will find the IP address 192.168.250.10 on the Internet?
Term
Static IP addressing
Definition
If no DHCP server is available on a network, what type of configuration must computers on the
network use for assignments of IP addresses?
Term
The IP address was automatically assigned by Windows when it failed to lease an address from the
DHCP server. The computer received an APIPA IP address.
Definition
If a computer is found to have an IP address of 169.254.1.1, what can you assume about how it
received that IP address?
Term
Ipconfig /release
Definition
What command can be used to cause Windows to release its IP address?
Term
To verify that TCP/IP is configured correctly.
Definition
What is the purpose of the command, ping 127.0.0.1?
Term
throughput
Definition
Bandwidth is the theoretical or potential speed of a network, whereas data ____________________ is
the actual speed.
Term
latency
Definition
Delays in network transmissions are called ____________________.
Term
True
Definition
True or False: Broadband satellite is available on airplanes.
Term
True
Definition
True or False: The most popular technology for wireless local networks is IEEE 802.11.
Term
security
Definition
A major downside of wireless technology is ____________________.
Term
True
Definition
True or False: Every network adapter has a 48-bit (6-byte) number hard-coded on the card by its
manufacturer, which is unique for that adapter.
Term
False
Definition
Fiber-optic cable is the most popular cabling method for local networks.
Term
Coaxial
Definition
____________________ cable has a single copper wire down the middle and a braided
shield around it.
Term
False
Definition
Fiber-optic cables transmit signals as pulses of light over shielded twisted pair (STP) cable strands
inside protected tubing.
Term
Gigabit
Definition
____________________ Ethernet operates at 1000 Mbps.
Term
hub
Definition
A(n) ____________________ is a pass-through device used to connect nodes on a network.
Term
False
Definition
True or False: A patch cable is used to connect two like devices.
Term
router
Definition
A(n) ____________________ is a device that manages traffic between two networks.
Term
IP
Definition
A DHCP (dynamic host configuration protocol) server gives ____________________ addresses to
computers on the network when they attempt to initiate a connection to the network and request an IP
address.
Term
NAT (Network Address Translation)
Definition
____________________ is a protocol that substitutes the IP address of the router for the IP address of
other computers inside the network when they need to communicate on the Internet.
Term
client/server
Definition
Applications in which there are two computers and two applications involved are called
____________________ applications.
Term
IP address
Definition
A(n) ____________________ is a 32-bit string used to identify a computer on a network.
Term
port number
Definition
A(n) ____________________ uniquely identifies an application on the computer.
Term
True
Definition
True or False: An intranet is a private network that uses the TCP/IP protocols.
Term
True
Definition
True or False: The first number of a Class C IP address is between 192 and 223.
Term
D
Definition
Class ____________________ addresses are used for multicasting.
Term
classful
Definition
Subnet masks that contain all ones or all zeros in an octet are called ____________________ subnet
masks.
Term
host name
Definition
A(n) ____________________ is the name of a computer and can be used in place of its IP address.
Term
encrypted
Definition
A VPN works by using ____________________ data packets between a private network and a computer
somewhere on the Internet.
Term
DNS
Definition
A(n) ____________________ server can find an IP address for a computer when the fully qualified
domain name is known.