Checkpoint: build a small network Flashcards
Which are the characteristics of the Internet?
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.
What allows digital devices to interconnect and transmit data?
A network connects people and devices through wired or wireless means.
How many unique values are possible using a single binary digit?
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.
What data representation is used when a computer or network device is processing data?
Computers use 1s and 0s or binary code to represent and interpret text, numbers, and special characters.
Which items are collectively referred to as network media?
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.
Which two devices are considered end devices?
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.
Give some examples of end and intermediary devices.
End devices: printer, PC, smart devices.
Intermediary devices: Firewall, router, switch
What are two types of wired high-speed Internet connections?
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.
A user is looking for a wireless headphone for listening to songs stored on a smartphone. What wireless technology would the headphone use?
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.
What are two methods typically used on a mobile device to provide internet connectivity?
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.
A consumer places a smartphone close to a pay terminal at a store and the shopping charge is successfully paid. Which type of wireless technology was used?
NFC is a wireless technology that allows data to be exchanged between devices that are in very close proximity to each other.
Which two methods are used to directly connect mobile devices such as tablets and smartphones to a data network?
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.
What information may be requested when pairing devices over Bluetooth?
During the pairing process, a personal identification number (PIN) may be requested for authentication.
A user is setting up a home wireless network. Which type of device must the user have in order to establish the wireless network and provide access to the internet for multiple home devices?
A wireless router connects multiple wireless devices to the network. It will then aggregate the internet access requests from home devices to the internet.
Which feature is characteristic of MAC filtering in wireless networks?
MAC address filtering uses the MAC address to identify which devices are allowed to connect to the wireless network.
