CH10

Question 1

Which of these terms best describes a SOHO network? (Choose Two)

A. Peer-to-Peer
B. Client-Server
C. WAN
D. LAN

Answer 1

A. Peer-to-Peer

D. LAN

Question 2

What differentiates a router from a switch?

A. Routers are for WANs, and switches are for LANs.
B. A Router provides a path out of the LAN, such as to the Internet.
C. A Switch provides a path out of the LAN, such as to the Internet.
D. Routers are for Client-Server Networks, and Switches are for Peer-to-Peer Networks.

Answer 2

B. A Router provides a path out of the LAN, such as to the Internet.

Question 3

When shopping for a SOHO router, look for the latest available standard, which is?

A. 802.11b
B. 802.11ac
C. 802.11n
D. 802.11g

Answer 3

B. 802.11ac

Question 4

What kind of ports are on the back of a SOHO router for making wired connections?

A. VGA
B. DVI
C. RJ-45
D. RJ-11

Answer 4

C. RJ-45 Ethernet

Question 5

How do you access a router configuration utility?

Answer 5

IP Address in the Web Browser

Question 6

What is the router’s SSID?

Answer 6

Network Name

Question 7

Which wireless encryption standard is the Most Secure?

A. WEP
B. WPA
C. WPA2
D. WPS

Answer 7

C. WPA2

WPA2 is the most secure wireless encryption standard.
WEP/WPA are not as good.
WPS is not an Encryption Standard, it is a way of configuring a Wifi network connection by pressing a button on the router.

Question 8

In which way is a cellular Internet connection superior to wired and Wifi?

A. Bandwidth
B. Mobility
C. Number of Concurrent Connections
D. Security

Answer 8

B. Mobility

Question 9

What is an advantage of using a homegroup?

A. Higher Security Level
B. Easier folder and printer sharing.
C. Makes router use less power
D. Faster file transfer

Answer 9

B. Easier folder and printer sharing.

Question 10

Where in the Control Panel would you go to connect to a network printer on a client PC?

Answer 10

Devices and Printers

Question 11

A Network?

Answer 11

When computers are linked to share files and communicate. Network devices use addresses to transmit packets containing data among one another.

Question 12

Acronym: WLAN?

Answer 12

Wireless Local Area Network

Connects LAN components Wirelessly.

Question 13

The Internet?

Answer 13

The largest WAN in existence, it’s a Worldwide Network that connects millions of computers and networks.

Question 14

Clients and Servers?

Answer 14

People use two kinds of computers on a network: Clients and Servers.
Servers share things such as files, folders, and printers.
Clients access those shared things.

Question 15

Workstations?

Answer 15

The most common client computer, it’s a PC or macOS box that handles general computing chores.

Question 16

Network Classifications?

Answer 16

Client-Server = One or More computers act as Servers while the remaining computers act as Clients. An example of a Client-Server network is a corporate network at a large company where IT professionals maintain multiple servers that provide the individual computers that the employees use with a variety of services.

Peer-to-Peer = Some home or small office networks, however, may not be a separate server. Instead, every computer on the network acts as both a client and a server. Each computer mostly does its own thing, functioning as a normal computer, and also shares resources with other computers on the network. Examples include a network in a residence that allows five computers and two smartphones to all share the same printer and internet connection.

Question 17

SOHO Network?

Answer 17

Small Office/Home Office - A network operated in a home or small business.

Question 18

Switches and Routers?

Answer 18

In a LAN, each computer connects to a Central Gathering point, either using a Cable or Wirelessly via radio frequency (RF) signals. Wired LAN computers connect to a switch; wireless LAN computers connect to a Wireless Access Point (WAP). Many SOHO networks use a box that combines both connection options. The Switch or WAP keeps track of the computing devices on the network and make sure network traffic gets to the proper computer.

Connecting Computers to a Switch or WAP creates a LAN - Connecting two or more LANs with different network address requires a Router.

Question 19

A Router?

Answer 19

Connects two or more networks directly, depending on the number of router interfaces. Depending on their configurations, routers can indirectly send network traffic to other remote networks that could be located anywhere on the planet. The Router acts as a gateway between the LAN and the Internet Service Provider (ISP) that provides the essential Internet Connection.

Question 20

Local Ad Hoc Networks and Direct Links?

Answer 20

Ad Hoc Networks - You can join a few computers in a Direct Connection without going through a connecting device such as a WAP.

Direct Link - Connection (PC to PC) is a one-to-one connection between two computers via their Ethernet ports. To create a direct link, you need a specially wired crossover cable.

Question 21

Acronym: SSID?

Answer 21

Service Set Identifier (Service Set ID) - Is the name wireless users see when they browse available wireless networks.

Question 22

Wireless Security?

Answer 22

Refers to a system of authentication for the wireless clients that connect to the SOHO router. If a router’s security is set to Open, that means it has NO Security. Anyone with a computer with WiFi can connect to the router and use the resources on the network.

Question 23

Wireless Security Options?

Answer 23

WPA - Wireless Protected Access encryption addressed the weakness of WEP. It functions as a sort of security protocol upgrade for WEP-enabled devices. WPA offers security enhancements such as encryption key integrity-checking feature and user authentication through the industry standard Extensible Authentication Protocol (EAP). EAP is a huge improvement over WEP.

WPA2 - Wireless Protected Access 2, the most secure Authentication Method. Other additional benefits over WPA, making WPA2 the strongest available encryption.

Question 24

Acronyms: Other Security Terms?

WEP
TKIP
EAP
AES
WPA
WPA2
WPA3 is wireless security standard certified by the WiFi Alliance in 2018.
PSK

Answer 24

WEP = Wired Equivalent Privacy
TKIP = Temporal Key Integrity Protocol, WPA uses this encryption for Usernames/Passwords
EAP = Extensible Authentication Protocol
AES = Advanced Encryption Standard, WPA2 uses this as an improved encryption standard.
WPA = Wireless Protected Access
WPA2 = Wireless Protected Access 2, is better than WPA.
PSK = Preshared Key, is a password or key you specify and share with people who need access.

Question 25

Acronym: WPS?

Answer 25

Wifi Protected Setup, it’s the easiest way to set up a client to access a secured router, it’s Push Button Configuration (PBC), you push a button on the router to place it in a special mode where it accepts new connection for a brief time.

Question 26

Acronym: NFC?

Answer 26

Near-Field Communication is the third WPS method, which is very short-range wireless networking technology that allows devices to connect when they are within a few inches of each other.

Question 27

Encryption Options RANK (IN order from Least to Most Secure)?

WPA2
WPA
WEP

Answer 27

WEP > WPA > WPA2, with WPA2 being the most Secure.

Expectations that WPA3 as it becomes more widely adopted standard will be the new most secure standard.

Question 28

Acronym: NOC?

Answer 28

Network Operation Centers, terrestrial networks that satellites connect to on Earth. Satellite Internet connectivity providers will give customers a Committed Information Rate (CIR) this is the guaranteed lowest speed that can be expected.

Question 29

Mobility?

Answer 29

Describes how far you can travel and still access network resources. Ranked in order from highest to lowest mobility are Satellite > Cellular > Radio Frequency (RF) > Wired.

Satellite Internet connectivity makes sense when no other options are available or when comparing options. Example, if you go on a Disney Ocean Cruise, you’ll find that the Local WiFi Internet on the ship is provided using Satellite Connectivity.

Cellular Internet Connectivity when you’re on the go in a populated area. Different Cell Phone Networks have different technologies available in certain locations such as 3G, 4G, 5G, and LTE that can affect the speed at which you surfe.

Wireless LAN connections are in the middle mobility wise, they can start to fade out at approximately 30 meters (100 feet) from a WAP, depending on the WAP’s technology.

Wireless Access Points or Hot Spots shouldn’t be overlooked, like at Restaurants, coffee shops, and hotels. If a business offers free WiFi, you and your mobile device can connect to it just like you do your wireless router at home.

Wired LAN Connections to the Internet are only as mobile as the length of your cable, which using a copper-based network cables, normally maxes out at approximately 100 meters. Not very mobile.

Question 30

Availability?

Answer 30

Refers to the probability that a system will be functional. When you want to use a service, can you depend on it? Wired network connections win this battle because they don’t commonly have interference problems. Cellular networks do a little better than WiFi but suffer from interference, as can satellite networks. Wireless network technology can be affected by environmental conditions such as heavy precipitation, lighting, or sandstorms.

Question 31

Throughput/Bandwidth?

Answer 31

Throughput refers to the data transfer rate. How quickly does your email download and how long do you have to wait for a web page to load.

Bandwidth relates to throughput in terms of getting data from point A to point B but refers more to the size of the connection. Many people equate bandwidth with speed, but it’s more properly analogous to volume. Think about drinking through a wide straw vs a narrow one. The liquid might be moving at the same rate, but more of it arrives in your mouth per second with the wider straw, it has greater bandwidth.

Question 32

Latency?

Answer 32

Connection Delay - Latency refers to the connection delay between a request and the response to that request. You always want that delay minimized so low latency is preferred over high latency. In networking terms, a Wired Connection will always respond the quickest. WiFi networks come in second because the distances between the client and the WAP are short. Cellular connections need to travel to the Cell Tower and back, creating a slightly bigger delay.

Question 33

Reliability?

Answer 33

Refers to the Quality of the data received and the error-checking and correcting capabilities of the technology. Does the data match what was sent or have errors been introduced?

Wired connections offer the highest reliability because so little typically can cause problems on a copper wire. WiFi and Cellular seem to offer similar strengths and weaknesses in reliability.

Question 34

Concurrent Connections?

Answer 34

Can have a couple of different meanings. Classic Networking terms, connections refer to unique conversations between a client and a server, called a Session.

Question 35

Microsoft Organizes networked Windows computers in 3 ways, what are they?

Answer 35

1. Workgroups - All PCs belong to a single Workgroup by default (WORKGROUP). Being in the same workgroup enables users to share access to files, folders, and printers.
2. Domains - Larger networks use Domains, which a server running Windows Server controls access to Network Resources. A Microsoft Active Directory (AD) domain requires one or more servers to act as domain controls (DC) which are central hosts that store usernames, passwords, computer accounts, and other network configuration items. Users can login from any computer connected to the domain-called Single Sign On (SSO) and have access to everything they have permission to access.
3. Homegroups - Workgroups provide no security and require lots of signing on to access resources; domains provide single sign on and security at a cost. To split the difference, Microsoft introduced homegroups in Windows 7. Most people just want to share types of data, such as Music, so homegroups just share Windows Libraries. Homegroup connects computers via a common password, no extra usernames are required.