IT Essentials v6.0 Chapter 7 Practice Quiz Answers

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IT Essentials v6.0 Chapter 7 Practice Quiz Answers
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IT-Essentials v6.0 Chapter 7 Practice Quiz Answers

1. How many host addresses are available on a network with a subnet mask of 255.255.0.0?

65,534*
254
1024
16,777,214

Explanation:
A subnet mask of 255.255.0.0 represents sixteen bits in the host portion of the address identified by zeros. Sixteen bits allows for 2^16 possible host addresses that can used on a network.

2. Which term is used to describe any device on a network that can send and receive information?

Host*
peripheral
console
server
workstation

Explanation:
Host is a general term for any device on a network that can send and receive data.

3. Which network device regenerates the data signal without segmenting the network?

modem
switch
router
hub*

Explanation:
Hubs are sometimes called repeaters because they regenerate the signal. All devices connected to the hub share the same bandwidth (unlike a switch, which gives each device dedicated bandwidth).

4. Which standards organization publishes current Ethernet standards?

IEEE*
CCITT
EIA/TIA
ANSI

Explanation:
The IEEE standards describe current Ethernet features. The IEEE standard for Ethernet is 802.3.

5. Which protocol operates at the application layer of the TCP/IP model?

IP
TCP
HTTP*
ICMP

Explanation:
The protocols are associated with the following TCP/IP layers:
HTTP > application layer
TCP > transport layer
IP and ICMP > internet layer

6. Fill in the blank.

A switch is a networking device that will record           __MAC__              addresses by inspecting every incoming data frame.

Noted: You can write one of the following in netacad: “media-access control” or “media access-control” or “MAC” or “mac” or “media access control” or “media-access-control”

Explanation:
A switch will maintain a switching table that contains a list of available MAC addresses on the network, The switching table will record MAC addresses by inspecting the source MAC address of every incoming frame.

7. What is the correct compressed format of the IPv6 address 2001:0db8:eeff:000a:0000:0000:0000:0001?

2001:db8:eeff:a:1
2001:db8:eeff:a::1*
2001:db8:eeff:a::0001
2001:db8:eeff:a:::1

Explanation:
There are two rules for IPv6 address compression. Rule 1: leading zeros in any hextet can be removed. Rule 2: contiguous hextets of all zeros can be compressed to a double colon. Rule two can only be applied once.

8. Which type of network will extend a short distance and connects printers, mice, and keyboards to an individual host?

PAN*
WLAN
LAN
MAN

Explanation:
A personal area network (PAN) connects devices, such as mice, keyboards, printers, smartphones, and tablets. These devices are often connected with Bluetooth technology. Bluetooth allows devices to communicate over short distances.

9. What is the proper CIDR prefix notation for a subnet mask of 255.0.0.0?

/8*
/32
/24
/16

Explanation:
The proper CIDR notation for a subnet mask of 255.0.0.0 is /8. This is because the /8 indicates that the first eight bits of the subnet mask are set to binary 1.

10. What is the color of the wire for pin 1 in the T568B Ethernet wiring standard?

green
orange
orange/white*
green/white
brown
brown/white
blue
blue/white

Explanation:
The color sequence for the wires in the T568B standard are as follows:
1. Orange/White
2. Orange
3. Green/White
4. Blue
5. Blue/White
6. Green
7. Brown/White
8. Brown

11. A student is helping a friend with a home computer that can no longer access the Internet. Upon investigation, the student discovers that the computer has been assigned the IP address 169.254.100.88. What could cause a computer to get such an IP address?

interference from surrounding devices
reduced computer power supply output
static IP addressing with incomplete information
unreachable DHCP server*

Explanation:
When a PC does not have a static IP address or cannot pick one up from a DHCP server, Windows will automatically assign the PC an IP address using APIPA, that uses the range of addresses 169.254.0.0 to 169.254.255.255.

12. What type of networking cable is used by television companies to carry data as electrical signals?

Coaxial*
unshielded twisted-pair
shielded twisted-pair
fiber-optic

Explanation:
Cable television companies and satellite communication systems both use copper or aluminum coaxial cable for connections between devices.

13. At which layer of the TCP/IP model does routing take place?

Internet*
transport
network access
application

Explanation:
The TCP/IP model includes four layers. The application layer, the transport layer, the internet layer, and the network access layer. Each layer supports different protocols and functions. The internet layer supports routing and routing protocols.

14. Which two protocols operate at the transport layer of the TCP/IP model? (Choose two.)

FTP
ICMP
TCP*
IP
UDP*

Explanation:
The TCP/IP model includes four layers. The application layer, the transport layer, the internet layer, and the network access layer. The functions at each layer include different protocols. The transport layer includes both the TCP and the UDP protocols.

15. What reference model divides network communications into seven distinct layers and is used to maintain equipment and application interoperability between different vendors?

DoD
IEEE 802.3
OSI*
TIA

Explanation:
The OSI model divides network communications into seven layers. It is used to ensure that equipment and applications that are developed by one vendor are compatible with equipment and applications developed by other vendors.

16. A company is expanding its business to other countries. All branch offices must remain connected to corporate headquarters at all times. Which network technology is required to support this scenario?

LAN
MAN
WLAN
WAN*

Explanation:
A WAN connects multiple LANs that are in geographically separated locations. A MAN connects multiple LANs in a large campus or in a city. WLAN is a wireless LAN that covers a rather small geographic area.

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