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Questions and Answers
What is the primary function of a DSL modem?
What is the primary function of a DSL modem?
- To send and receive digital data over a DSL line (correct)
- To connect multiple computers in a wired network
- To create a mobile hotspot from a smartphone
- To connect wireless devices to the internet
Which device can function as a mobile hotspot?
Which device can function as a mobile hotspot?
- Wireless access point
- DSL modem
- ISDN modem
- Wireless modem (correct)
What is the maximum data transfer rate of 4G technology?
What is the maximum data transfer rate of 4G technology?
- 144 Kbps
- 2.56 Tbps
- 100 Mbps (correct)
- 9.6 Kbps
What does a wireless access point (WAP) primarily do?
What does a wireless access point (WAP) primarily do?
Which of the following technologies operates within the 2G range?
Which of the following technologies operates within the 2G range?
What does the term 'up-link' refer to in satellite communication?
What does the term 'up-link' refer to in satellite communication?
What is the difference between a router and a wireless access point?
What is the difference between a router and a wireless access point?
Which application is NOT typically associated with communication satellites?
Which application is NOT typically associated with communication satellites?
In which configuration can a wireless access point connect to a router?
In which configuration can a wireless access point connect to a router?
What is a primary feature of microwave transmission?
What is a primary feature of microwave transmission?
Which statement correctly describes a router's function?
Which statement correctly describes a router's function?
What technology does a wireless modem utilize to connect to the internet?
What technology does a wireless modem utilize to connect to the internet?
Which technology generally allows internet access in remote areas?
Which technology generally allows internet access in remote areas?
How can an ISDN modem transmit data?
How can an ISDN modem transmit data?
What is the role of a satellite modem in communication?
What is the role of a satellite modem in communication?
Which of the following technologies is limited to transfer rates up to 2.56 Tbps?
Which of the following technologies is limited to transfer rates up to 2.56 Tbps?
What is the primary function of a network interface card (NIC)?
What is the primary function of a network interface card (NIC)?
In what scenario would a hub typically be used over a switch?
In what scenario would a hub typically be used over a switch?
What does bandwidth represent in the context of broadband media?
What does bandwidth represent in the context of broadband media?
Which of the following factors affects latency in a network?
Which of the following factors affects latency in a network?
What is a defining characteristic of a switch compared to a hub?
What is a defining characteristic of a switch compared to a hub?
What type of device is commonly used as a network card for mobile devices?
What type of device is commonly used as a network card for mobile devices?
Which of the following statements correctly describes transmission media?
Which of the following statements correctly describes transmission media?
For optimal network performance, what should be the ideal relationship between bandwidth and latency?
For optimal network performance, what should be the ideal relationship between bandwidth and latency?
What role does a server play in a network?
What role does a server play in a network?
Which of the following best describes a peer in a network?
Which of the following best describes a peer in a network?
What does a protocol in networking define?
What does a protocol in networking define?
Which of the following is NOT a network communication standard?
Which of the following is NOT a network communication standard?
What is the primary purpose of network standards?
What is the primary purpose of network standards?
How do hardware manufacturers typically design their products?
How do hardware manufacturers typically design their products?
Which network topology involves all devices being connected to a single communication line?
Which network topology involves all devices being connected to a single communication line?
Which of the following mediums can be used in network communication standards?
Which of the following mediums can be used in network communication standards?
What is the main characteristic of Ethernet regarding data transmission?
What is the main characteristic of Ethernet regarding data transmission?
How does Token Ring manage data transmission?
How does Token Ring manage data transmission?
What is a key difference between TCP/IP and OSI?
What is a key difference between TCP/IP and OSI?
What is the primary method used by Wi-Fi to transmit data?
What is the primary method used by Wi-Fi to transmit data?
What is the transfer rate range for Ethernet?
What is the transfer rate range for Ethernet?
Which layer of the OSI model does TCP/IP correspond to primarily?
Which layer of the OSI model does TCP/IP correspond to primarily?
What is one of the properties of the token used in Token Ring?
What is one of the properties of the token used in Token Ring?
What is the typical data transfer rate range for Wi-Fi?
What is the typical data transfer rate range for Wi-Fi?
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Study Notes
Modems
- DSL Modem: Connects computers to DSL lines for digital data transmission; receives data from DSL lines.
- Wireless Modem: Utilizes mobile service networks for wireless internet access from computers or mobile devices; may feature built-in or external antennas.
- ISDN Modem: Provides broadband connection via ISDN lines for digital data transmission to and from computers; can include USB adapters.
Wireless Access Points and Routers
- Wireless Access Point (WAP): Acts as a central communication device, connecting computers wirelessly to a wired network using Wi-Fi.
- Router: Connects multiple devices and routes data packets to their correct destinations; suitable for various network sizes; operates by forwarding data paths efficiently.
Network Cards, Hubs, and Switches
- Network Card (NIC): Allows devices without built-in networking capability to access networks; coordinates data transmission.
- Hub/Switch: Central point for connecting cables; hubs are typically used in larger networks, while switches are used in smaller setups; may include routers in some configurations.
Transmission Media
- Transmission Media: Materials or channels through which communication signals travel; includes various types and can carry multiple signals simultaneously.
- Broadband: Transmits large volumes of data simultaneously, often referred to as bandwidth; optimal performance necessitates low latency.
Latency
- Latency: Measures the time taken for a signal to traverse from one location to another, impacted by distance, media type, and node quantity.
Communication Technologies
- Microwaves: High-speed signal transmission using radio waves with line-of-sight requirements for effective communication.
- Communication Satellites: Receive microwave signals, amplify them, and retransmit back to Earth stations; utilized for various applications like navigation and broadcasting.
Internet Access
- Satellite Internet Connection: Enables remote access to the internet using satellites, often paired with a satellite dish; can be costly.
Network Architecture
- Client-Server: Configuration where clients depend on the server for resources; servers orchestrate access to hardware and data.
- Peer-to-Peer: Network type where each device (peer) shares resources with others, equally responsible for data transfer.
Network Topology
- Types of Topologies: Includes bus and ring structures; can affect performance depending on the specific setup.
Network Communication Standards and Protocols
- ANSI and IEEE: Organizations responsible for proposing and establishing network communication standards, influencing device interaction.
Ethernet and Token Ring
- Ethernet: No central device regulates data transmission, which can lead to collisions when multiple devices send data simultaneously; supports a high data rate.
- Token Ring: Utilizes a passing token to control data transmission in a unidirectional manner; ensures only one device transmits at a time, preventing collisions.
TCP/IP and Wi-Fi
- TCP/IP: A network protocol defining rules for message routing; utilizes packet switching for effective data transfer.
- Wi-Fi (802.11): Wireless networking standard using radio waves for communication; offers data transfer rates ranging from 11 Mbps to 7 Gbps, easily integrates with Ethernet technologies.
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