Networking Basics Module 1 - 4 Checkpoint Test Online

Hint

Command bandwidth measurements are as follows from smallest to largest:

1. Thousands of bits per second (Kbps) or Kilobits per second
2. Millions of bits per second (Mbps) or Megabits per second
3. Billions of bits per second (Gbps) or Gigabits per second
4. Trillions of bits per second (Tbps) or Terabits per second

Hint

The Internet is a global system of interconnected computer networks that has no central governance. It is not limited to geographic boundaries and uses static public IP addresses for communication.

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A bit is stored and transmitted as one of two possible discrete states. Each bit can only have one of two possible values, 0 or 1. The term bit is an abbreviation of “binary digit” and represents the smallest piece of data.

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A network connects people and devices through wired or wireless means.

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A device that forms the interface between users and the underlying communication network is known as an end device. End devices are either the source or destination of a message.

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Intermediate devices in a network provide network connectivity to end devices and transfer user data packets during data communications.

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Cable and DSL Internet technologies both use physical cabling to provide an Internet connection to a residence or a small business. Although dial-up is a wired technology, it does not provide a high-speed Internet connection. Satellite and cellular connections provide a wireless Internet connection.

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NFC is a wireless technology that allows data to be exchanged between devices that are in very close proximity to each other.

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Mobile devices connect wirelessly to data networks using either Wi-Fi or a telecommunication provider cellular network. Bluetooth is used to connect to peripherals or other local devices over very short distances. Ethernet is a wired network access technology and is not used by mobile devices. Mobile devices do not typically implement WiMAX technology.

Hint

Mobile devices commonly use Wi-Fi and cellular to connect to the internet. The cellular connection uses the cellular data network for a fee. The Wi-Fi connection uses an 802.11 wireless network in the area to connect to the internet.

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Bluetooth is a wireless technology for data exchange over a short distance. It is suitable for connecting devices with simple tasks, such as headsets, keyboards, mice, and printers. Wi-Fi is suitable for variety of applications with high speed wireless connectivity required or preferred. Infrared requires a direct line of sight between the transmitter and the receiver. 3G/4G are cellular network technologies to manage voice calls and data transmission between clients and service providers.

Hint

Tethering allows a laptop or PC to use the Internet connection of a mobile device such as a cell phone, usually through a cellular data connection. This allows devices to connect to the Internet in locations where there is no Wi-Fi or cabled connection, but where there is still a cellular data connection.

Hint

The wireless technologies most frequently used in home networks are in the unlicensed 2.4 GHz and 5 GHz frequency ranges.

Hint

The ports shown in the diagram are used as follows: The LAN ports, A and B, are used to connect wired devices on the home network. The Internet port, C, is connected to the modem. The port, labeled D, is the 5V DC power port that supplies power to the router.

Hint

When a wireless AP or router is being set up, an SSID is configured to uniquely identify the WLAN that is managed by the device.

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MAC address filtering uses the MAC address to identify which devices are allowed to connect to the wireless network.

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A wireless router connects multiple wireless devices to the network. It will then aggregate the internet access requests from home devices to the internet.

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900 MHz is an FCC wireless technology that was used before development of the 802.11 standards. 900 MHz devices have a larger coverage range than the higher frequencies have and do not require line of sight between devices. 802.11b/g/n/ad devices all operate at 2.4 GHz. 802.11a/n/ac/ad devices operate at 5 GHz, and 802.11ad devices operate at 60 GHz.

Hint

Network media is a term used to describe the actual physical layer transport along the path over which an electrical signal travels as it moves from one component to another.

Hint

During the pairing process, a personal identification number (PIN) may be requested for authentication.