CompTIA A+ - CH7 - Setting up a Local Network

A wireless local area network (WLAN) covers a small area, such as an office or a home. The divides in a WLAN are connected in either _______ mode (no wireless access point) or infrastructure mode (using an access point).

ADHOC

The process of validating a user. A user would enter their credentials and, if accurate, their credentials are accepted, and access is granted to them.

Authentication

Cable connection using F-type connectors.

Coaxial

While you work on the customer's printer, he continues chatting about his network and problems he's been experiencing. One complaint is that his Internet service slows down considerably in the evening. You suspect you know the cause of this problem: His neighbors arrive home in the evening and bog down the ISP's local infrastructure. To be sure, you take a quick look at the back of his modem. What type of cable connected to the WAN port would confirm your suspicions and why?

Coaxial cable connected to the modem's WAN port would confirm that the customer is using cable Internet, which shares the TV cable infrastructure with other customers in the area. This can result in service becoming degraded if many people in the neighborhood are using cable Internet at the same time.

The ______ 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

DHCP

The domain name address is used to connect to a ______ server that is used to resolve the address. This allows you to use a name like www..com instead of trying to remember the IP address of the web server

DNS

Filters use RJ-11 connections. Filters are used when simultaneous voice and data are desired. This filter is required for on each analog telephone connection when simultaneous voice and data are desired.

DSL

A dial-on-demand service, which means that a telephone number must be dialed when connecting to an ISP (Internet Service Provider). This service is not affected by adverse atmospheric Conditions such as clouds, rain, snow, and fog.

Dialup

______ SSID broadcast hides the SSID; it will not be seen by anyone. If they don't know the SSID, they can't get on the company's network.

Disabling

Patch cable uses RJ-45 connectors

Ethernet

Adding an access point will not stop someone from gaining access to the company's wireless network. It will _______ the size of the wireless network.

Extend

The _______ is the address on the router that allows your traffic to move from your local network to the internet. You use this to route your requests for addresses outside your local network

Gateway

Can be used to share the internet connection on a mobile device with other mobile devices or computers using the device's Wi-Fi. This is a connect-as-needed technology.

Hotspot

Describe two different methods of opening the Network and Sharing Center in Windows 10.

Include any two of the following: • Open Control Panel and click Network and Sharing Center. • Right-click the Network icon in the desktop taskbar, click Open Network & Internet settings, and then click Network and Sharing Center. • Right-click Start, click Network Connections, and then click Network and Sharing Center. • In File Explorer, click Network in the left pane and then click Network and Sharing Center on the Network ribbon. • In Command Prompt, PowerShell, or the Run dialog box, enter control.exe /name Microsoft.NetworkAndSharingCenter.

A ______ is the device's globally unique hardware number. Unlike the IP address, this address does not change.

Mac Address

Cathy will find the computer's network connection settings in the _______ (from the Control Panel). She will also see all the network connection types.

Network and Sharing Center

App gives parents the ability to manage the kind of content allowed from the internet. Parents can also monitor websites and the content accessed.

Parental Controls

Command-line command that tests connectivity by sending an echo request to a remote computer. If the remote computer is online, detects the signal, and is configured to respond, it responds.

Ping

You're troubleshooting a network connection for a client at her home office. After pinging the network's default gateway, you discovered that the cable connecting the desktop to the router had been damaged by foot traffic and was no longer providing a reliable signal. You replaced the cable, this time running the cable along the wall so it won't be stepped on. What do you do next?

Ping the router again to confirm the network connection is working.

Each server application running on a computer is addressed by a unique ______________.

Port Address

You're setting up a Minecraft gaming server so that you and several of your friends can share a realm during your gameplay. To do this, your friends will need to access your server over the Internet, which means you must configure your router to send this traffic to your game server. Which router feature will you use and which port must you open?

Port forwarding will send Minecraft traffic to the gaming server without exposing the rest of the network to that traffic from the Internet. Minecraft uses port 25565.

The IP addresses that are used within a network used the ________ network IP address ranges. These IP address ranges are considered to be non-routable and cannot be used on the internet.

Private

It's a network protocol, which operates on port number 1812. It provides accounting, authorization, and authentication services to its users

RADIUS

If a user were connecting to the network using a wireless connection, these settings should be enabled:______, authentication and encryption setting.

SSID

An always-on internet technology that can be severely degraded (or impossible to use) under adverse weather and atmospheric conditions such as clouds, rain, snow, and fog

Satellite

Authentication requires a user to provide one passphrase only. The entered passphrase is analyzed, and if it is found to be accurate, the user is then granted access to the system. Comparatively less secure than multi-factor authentication. Ideally, this authentication should not be used for securing sensitive information

Single Factor

The ________ is used to identify the network that you are connected to and the mode on that network.

Subnet mask

Changing the radio power allows you to prevent the wireless network from going outside the walls of the company. True or False?

True

The user must have a valid _______ and password configured on the Windows domain controller to authenticate on the network thru a wired connection Username

Username

A wireless router provides a provision to connect remotely using a ________. This is what you will use to first configure the wireless router.

Web Browser

You have just installed a SOHO router in a customer's home and the owner has called to say his son is complaining that Internet gaming is too slow. His son is using a wireless laptop. Which possibilities should you consider to speed up the son's gaming experience? Select all that apply. a. Verify that the wireless connection is using the fastest wireless standard the router supports. b. Disable encryption on the wireless network to speed up transmissions. c. Suggest the son use a wired Gigabit Ethernet connection to the network. d. Enable QoS for the gaming applications on the router and on the son's computer.

a. Verify that the wireless connection is using the fastest wireless standard the router supports. c. Suggest the son use a wired Gigabit Ethernet connection to the network. d. Enable QoS for the gaming applications on the router and on the son's computer.

A friend of yours is having trouble getting good Internet service. He says his house is too remote for cable TV—he doesn't even have a telephone line to his house. He's also really frustrated with satellite service because cloudy skies or storms often disrupt the signal. You ask him what provider he uses for his cell phone. He says he has Verizon for his cell, which gets a good signal at his house. What Internet service will you recommend he look into getting for his home network? a. Dial-up b. LTE installed Internet c. DSL d. Cable Internet

b. LTE installed Internet

You have just finished installing a network adapter and booted up the system, installing the drivers. You open File Explorer on a remote computer and don't see the computer on which you installed the new NIC. What is the first thing you check? The second thing? a. Has IPv6 addressing been enabled? b. Is the computer using dynamic or static IP addressing? c. Do the lights on the adapter indicate it's functioning correctly? d. Has the computer been assigned a computer name?

c. Do the lights on the adapter indicate it's functioning correctly? b. Is the computer using dynamic or static IP addressing?

You need a VPN to connect to a private, remote network in order to access some files. You click the network icon in your taskbar to establish the connection, and realize there is no VPN option available on the menu. What tool do you need to use to fix this problem? a. net command b. netstat command c. Network and Sharing Center d. Network Connections window

c. Network and Sharing Center

As an IT technician, you arrive at a customer's home office to troubleshoot problems he's experiencing with his printer. While questioning the customer to get an understanding of his network, you find that he has a new Wi-Fi router that connects wirelessly to a new desktop and two new laptops, in addition to multiple smartphones, tablets, and the network printer. He also has several smart home devices, including security cameras, light switches, door locks, and a thermostat supported by an IoT controller hub. To work on the printer, which type of network will you be interacting with? a. PAN b. WAN c. WMN d. LAN

d. LAN

Your customer then asks you if it would be worth the investment for him to have Ethernet cabling installed to reach each of his workstations, instead of connecting them by Wi-Fi to his network. Specifically, he wants to know if that would speed up communications for the workstations. You examine his router and find that it's using 802.11ac Wi-Fi. Would you advise him to upgrade to Ethernet? Why or why not? a. Yes, because Ethernet is faster than 802.11ac. b. Yes, because wired connections are always faster than wireless connections. c. No, because installing Ethernet cabling is more expensive than the increased speed is worth. d. No, because 802.11ac speeds are faster than Ethernet.

d. No, because 802.11ac speeds are faster than Ethernet.

You run the ipconfig command on your computer, and it reports an IP address of 169.254.75.10 on the Ethernet interface. Which device assigned this IP address to the interface? a. The ISP's DNS server b. The local network's DHCP server on the SOHO router c. The cable modem d. The local computer

d. The local computer

You've just received a call from Human Resources asking for assistance with a problem. One of your company's employees, Renee, has recently undergone extensive surgery and will be homebound for 3-5 months. She plans on working from home and needs a solution to enable frequent and extended access to the company network's resources. Which WAN technology will you need to configure for Renee and which tool will you use to configure it? a. WWAN using the Network Connections window b. Dial-up using the Network and Sharing Center c. Ethernet using the Network Connections window d. VPN using the Network and Sharing Center

d. VPN using the Network and Sharing Center

While troubleshooting an Internet connection problem for your network, you restarted the modem and then the router. The router is now communicating with the Internet, which you can confirm by observing the blinking light on the router's WAN indicator. However, now your laptop is not communicating with the router. Order the commands below to fix the problem and confirm connectivity. a. ping b. ipconfig /renew c. nslookup microsoft.com d. ipconfig /release

d. ipconfig /release b. ipconfig /renew a. ping c. nslookup microsoft.com

In this chapter, you learned how to set a static IP address in Windows. Most Linux OSs allow these settings to be changed from the command line. Search online to see how to do this. What Linux command is used to set the interface to a static IP address?

iface. (iface eth0 inet static)

Your boss has asked you to configure a DHCP reservation on the network for a Windows computer that is used to configure other devices on a network. To do this, you need the computer's MAC address. What command can you enter at the command line to access this information?

ipconfig /all. or arp -a.