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1. Networking Basics > 4. Build a Home Network > Flashcards

4. Build a Home Network Flashcards

1
Q

WLAN meaning?

A

Wireless Local Area Network (WLAN)

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2
Q

These ports connect to the internal switch portion of the router.

A

Ethernet ports

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3
Q

All devices connected to the switch ports are what?

A

are on the same local network.

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4
Q

This port is used to connect the device to another network.

A

Internet port

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5
Q

This connects the router to a different network than the Ethernet ports.

A

Internet port

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6
Q

This port is often used to connect to the cable or DSL modem in order to access the internet.

A

Internet port

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7
Q

Internet port on router is labeled as?

A

WAN

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8
Q

Ethernet port on router is labeled as?

A

LAN

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9
Q

What are the two primary ports of Small business and home routers?

A

Ethernet port and Internet port

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10
Q

The wireless technologies most frequently used in home networks are in the?

A

Unlicensed 2.4 GHz and 5 GHz frequency ranges.

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11
Q

What band does Bluetooth use?

A

2.4 GHz band

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12
Q

What is IEEE 802.11 Standard and its meaning?

A

The 802.11 standard refers to a set of specifications developed by the Institute of Electrical and Electronics Engineers (IEEE) for wireless local area networks (WLANs). It is commonly known as Wi-Fi, which is a brand name used to market products complying with the IEEE 802.11 standards.

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13
Q

What are 802.11 devices?

A

802.11 devices are network-enabled devices that comply with the IEEE 802.11 standards for wireless local area networks (WLANs). These devices use wireless communication to connect to and communicate with other devices within a WLAN.

802.11 devices encompass a wide range of products, including but not limited to:

Wireless routers: These devices serve as central hubs in a WLAN, allowing multiple devices to connect to the network wirelessly. They provide the necessary functions to transmit and receive data between devices and connect the WLAN to a wired network or the internet.

Wireless access points (WAPs): Similar to routers, WAPs are used to create wireless networks and enable devices to connect to them. However, unlike routers, WAPs do not perform routing functions and are often used to extend the range and coverage of an existing WLAN.

Wireless network adapters: These devices enable devices without built-in wireless capabilities, such as desktop computers or older laptops, to connect to a WLAN. They come in various forms, including USB adapters, PCIe cards, and mini PCIe cards.

Wireless-enabled smartphones and tablets: Most modern smartphones and tablets come with built-in Wi-Fi capabilities, allowing them to connect to 802.11 networks.

Wireless-enabled laptops and computers: Many laptops and desktop computers now come with built-in Wi-Fi capabilities, enabling them to connect to wireless networks without the need for external adapters.

Internet of Things (IoT) devices: A wide range of IoT devices, such as smart home devices (e.g., smart speakers, thermostats, security cameras), wearables, and connected appliances, may utilize 802.11 standards to connect to a WLAN and communicate with other devices or the internet.

These are just a few examples of the devices that can be categorized as 802.11 devices. The 802.11 standards provide the underlying specifications and protocols for these devices to establish wireless connections and communicate with each other within a WLAN.

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14
Q

What is the electromagnetic spectrum of audio?

A

Extremely low - Very Low - Low

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15
Q

What is the electromagnetic spectrum of AM (Amplitude Modulation) Broadcast?

A

At the middle of Medium to High

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16
Q

What is the electromagnetic spectrum of Short-wave Radio?

A

High

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17
Q

What is the electromagnetic spectrum of FM (Frequency Modulation) Broadcast?

A

Very High

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18
Q

What is the electromagnetic spectrum of Television?

A

Very High to Ultra Highv

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19
Q

What is the electromagnetic spectrum of Cellular (840 MHz)?

A

Ultra High

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20
Q

What is the electromagnetic spectrum of NPCS (930 MHz)?

A

Ultra High

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21
Q

Directly connected devices use a what type of media Ethernet?

A

Ethernet patch cable, usually unshielded twisted pair.

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22
Q

These cables can be purchased with the RJ-45 connectors already installed, and they come in various lengths.

A

Ethernet patch cable, usually unshielded twisted pair.

23
Q

What is RJ45?

A

The RJ45 connector is a common type of connector used for Ethernet networking. It is an eight-pin connector that is commonly used to terminate twisted pair cables, such as Category 5 (Cat5) or Category 6 (Cat6) cables.

24
Q

It is the most common wiring used in a LAN. The cable is made up of 4 pairs of wires that are twisted to reduce electrical interference.

A

Category 5e cable

25
Q

It has an inner wire surrounded by a tubular insulating layer, that is then surrounded by a tubular conducting shield. Most of this have an external insulating sheath or jacket.

A

Coaxial Cable

26
Q

It can be either glass or plastic with a diameter about the same as a human hair and it can carry digital information at very high speeds over long distances. It can have a very high bandwidth, which enables them to carry very large amounts of data.

A

Fiber-optic cables

27
Q

It can be either glass or plastic with a diameter about the same as a human hair and it can carry digital information at very high speeds over long distances. It can have a very high bandwidth, which enables them to carry very large amounts of data.

A

Fiber-optic cables

28
Q

It can be either glass or plastic with a diameter about the same as a human hair and it can carry digital information at very high speeds over long distances. It can have a very high bandwidth, which enables them to carry very large amounts of data.

A

Fiber-optic cables

28
Q

It can be either glass or plastic with a diameter about the same as a human hair and it can carry digital information at very high speeds over long distances. It can have a very high bandwidth, which enables them to carry very large amounts of data.

A

Fiber-optic cables

29
Q

The main organization responsible for the creation of wireless technical standards is the?

A

Institute of Electrical and Electronics Engineers (IEEE).

30
Q

The IEEE 802.11 standard governs the?

A

WLAN environment

31
Q

Wireless standards for LANs use the?

A

2.4 GHz and 5 GHz frequency bands.

32
Q

This organization is responsible for testing wireless LAN devices from different manufacturers.

A

Wi-Fi Alliance

33
Q

The Wi-Fi logo on a device means?

A

That this equipment meets standards and should operate with other devices that use the same standard.

34
Q

Wireless routers using the 802.11 standards have multiple settings that have to be configured. These settings are?

A

Network mode, Network Name (SSID), Standard Channel, SSID Broadcast

35
Q

Define the Network Mode in 802.11 standard configuration.

A

Determines the type of technology that must be supported. For example,802.11b,802.11g,802.11n or Mixed Mode.

36
Q

Define the Network Name (SSID) in 802.11 standard configuration.

A

Used to identify the WLAN. All devices that wish to participate in the WLAN must have the same SSID.

37
Q

Define the Standard Channel in 802.11 standard configuration.

A

Specifies the channel over which communication will occur. By default, this is set to Auto to allow the access point (AP) to determine the optimum channel to use.

38
Q

Define the SSID Broadcast in 802.11 standard configuration.

A

Determines if the SSID will be broadcast to all devices within range. By default, set to Enabled.

Note: SSID stands for Service Set Identifier.

39
Q

The 802.11 protocol can provide what?

A

Increased throughput based on the wireless network environment.

40
Q

If all wireless devices connect with the same 802.11 standard then what?

A

Maximum speeds can be obtained for that standard.

41
Q

If the access point is configured to accept only one 802.11 standard then what?

A

Devices that do not use that standard cannot connect to the access point.

42
Q

This network environment can include devices that use any of the existing Wi-Fi standards.

A

A mixed mode wireless network

43
Q

This environment provides easy access for older devices that need a wireless connection but do not support the latest standards.

A

A mixed mode wireless network

44
Q

How does wireless components connect to the appropriate WLAN?

A

This is done using the SSID.

45
Q

It is used to tell wireless devices, called wireless stations (STAs), which WLAN they belong to and with which other devices they can communicate.

A

SSID

46
Q

Wireless routers usually broadcast what?

A

Their configured SSIDs by default

47
Q

It allows other devices and wireless clients to automatically discover the name of the wireless network.

A

The SSID broadcast

48
Q

When the SSID broadcast is disabled, you must what?

A

Manually enter the SSID on wireless devices.

49
Q

Describe the first time setup of Home Router

A

Many wireless routers designed for home use have an automatic setup utility that can be used to configure the basic settings on the router. These utilities usually require a PC or laptop to be connected to a wired port on the router. If no device is available that has a wired connection, it may be necessary to configure the wireless client software on the laptop or tablet first.

To connect to the router using a wired connection, plug an Ethernet patch cable into the network port on the computer. Plug the other end into a LAN port on the router. Do not plug the cable into the port or interface that is labeled “Internet”. The internet port will connect to the DSL or cable modem. Some home routers may have a built-in modem for internet connections. If this is the case, verify that the type of connection is correct for your internet service. A cable modem connection will have a coaxial terminal to accept a BNC-type connector. A DSL connection will have a port for a telephone-type cable, usually an RJ-11 connector.

After confirming that the computer is connected to the network router and the link lights on the NIC indicate a working connection, the computer needs an IP address. Most network routers are set up so that the computer receives an IP address automatically from a local DHCP server automatically configured on the wireless router. If the computer does not have an IP address, check the router documentation and configure the PC or tablet with a unique IP address, subnet mask, default gateway, and DNS information.

50
Q

What are the design considerations?

A
  • What should my network be called?
  • What types of devices will attach to my network?
  • How do I add new devices?
51
Q

” What should my network be called? “

A

If SSID broadcasting is on, the SSID name will be seen by all wireless clients within your signal range. Many times the SSID gives away too much information about the network to unknown client devices. It is not a good practice to include the device model or brand name as part of the SSID. Wireless devices have default settings that are easy to find on the internet, as well as known security weaknesses.

52
Q

” What types of devices will attach to my network? “

A

Wireless devices contain radio transmitter/receivers that function within a specific frequency range. If a device only has the necessary radio for 802.11 b/g, it will not connect if the wireless router or access point is configured to only accept 802.11n or 802.11ac standards. If all devices support the same standard, the network will work at its optimum speed. If you have devices that do not support the n or ac standards, then you will have to enable legacy mode. A legacy mode wireless network environment varies between router models but can include a combination of 802.11a, 802.11b, 802.11g, 802.11n, and 802.11ac. This environment provides easy access for legacy devices that need a wireless connection.

53
Q

” How do I add new devices? “

A

The decision regarding who can access your home network should be determined by how you plan to use the network. On some wireless routers, it is possible to set up guest access. This is a special SSID coverage area that allows open access but restricts that access to using the internet only.

The figure shows a wireless setup screen.

Note: Some wireless routers may label legacy mode as mixed mode.

1. Networking Basics (18 decks)

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