Podcast
Questions and Answers
Which wireless signal type would work best to control a garage door opener?
Which wireless signal type would work best to control a garage door opener?
Which application is most likely to use Infrared?
Which application is most likely to use Infrared?
Which transmission medium offers the fastest potential data transfer rates?
Which transmission medium offers the fastest potential data transfer rates?
Which transmission medium provides the most security in transit?
Which transmission medium provides the most security in transit?
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Which wireless transmission medium cannot transmit through solid objects?
Which wireless transmission medium cannot transmit through solid objects?
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Which of the following is NOT a function of the data link layer?
Which of the following is NOT a function of the data link layer?
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Which network device is most concerned with MAC addresses?
Which network device is most concerned with MAC addresses?
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Which part of a message contains error detection and correction information?
Which part of a message contains error detection and correction information?
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What is the power level of the signal at the receiver after a 3-dB loss from an initial strength of 60 watts?
What is the power level of the signal at the receiver after a 3-dB loss from an initial strength of 60 watts?
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What type of connection is essential for maintaining the immediacy of a conversation on social media?
What type of connection is essential for maintaining the immediacy of a conversation on social media?
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Which encoding scheme produces the highest data transfer rate based on baud rate?
Which encoding scheme produces the highest data transfer rate based on baud rate?
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Which of the following symbols is not part of the ASCII character set?
Which of the following symbols is not part of the ASCII character set?
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Where can a router locate the destination IP address in a message sent over the Internet?
Where can a router locate the destination IP address in a message sent over the Internet?
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What is the single point of failure in Mae's cloud database setup?
What is the single point of failure in Mae's cloud database setup?
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What feature of USB allows you to connect devices without shutting down the computer?
What feature of USB allows you to connect devices without shutting down the computer?
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Using Shannon’s theorem, what is the calculated data transfer rate given a signal frequency of 10,000 Hz and noise power of 180 watts?
Using Shannon’s theorem, what is the calculated data transfer rate given a signal frequency of 10,000 Hz and noise power of 180 watts?
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Which cloud service model is utilized by Kason for hosting his website?
Which cloud service model is utilized by Kason for hosting his website?
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Which of the following represents an example of data?
Which of the following represents an example of data?
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What function is Raul’s computer filling by storing documents accessed regularly by others in the office?
What function is Raul’s computer filling by storing documents accessed regularly by others in the office?
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Which encoding scheme uses the lowest baud rate?
Which encoding scheme uses the lowest baud rate?
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How many UTF-8 bytes are required for the Unicode symbol U+0041, which represents the letter A?
How many UTF-8 bytes are required for the Unicode symbol U+0041, which represents the letter A?
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To effectively segment a network for enhanced security and control over sensitive data, what should the owners do?
To effectively segment a network for enhanced security and control over sensitive data, what should the owners do?
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What distinguishes continuous signals from discrete signals?
What distinguishes continuous signals from discrete signals?
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What is one advantage of USB-C over earlier versions of USB?
What is one advantage of USB-C over earlier versions of USB?
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What is a primary advantage of digital signals compared to analog signals?
What is a primary advantage of digital signals compared to analog signals?
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When checking email on a smartphone using a cellular network, what kind of network is being utilized?
When checking email on a smartphone using a cellular network, what kind of network is being utilized?
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What is the bandwidth of a Wi-Fi channel with a lowest frequency of 2401 MHz and highest frequency of 2423 MHz?
What is the bandwidth of a Wi-Fi channel with a lowest frequency of 2401 MHz and highest frequency of 2423 MHz?
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Which of the following is not an example of a sensor network?
Which of the following is not an example of a sensor network?
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How can Peggy run a Windows-only application on her MacBook?
How can Peggy run a Windows-only application on her MacBook?
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Which OSI layers does the TCP/IP architecture combine into one?
Which OSI layers does the TCP/IP architecture combine into one?
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Which of the following protocols operates at the transport layer of the OSI model?
Which of the following protocols operates at the transport layer of the OSI model?
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Which device relies on IP addresses for routing messages across networks?
Which device relies on IP addresses for routing messages across networks?
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Which Ethernet standard is specifically designed to function over fiber-optic cable?
Which Ethernet standard is specifically designed to function over fiber-optic cable?
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What is a primary benefit of upgrading from hubs to switches in a network?
What is a primary benefit of upgrading from hubs to switches in a network?
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Which topology allows for a logical structure different from its physical deployment?
Which topology allows for a logical structure different from its physical deployment?
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Which wireless operation does a device perform immediately after sending a request to send (RTS)?
Which wireless operation does a device perform immediately after sending a request to send (RTS)?
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Which protocol is used to avoid collisions during data transmission?
Which protocol is used to avoid collisions during data transmission?
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What network device would you choose to connect an email server for internal employee accessibility?
What network device would you choose to connect an email server for internal employee accessibility?
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Which standard will provide a secure segment for a company’s executives on the network?
Which standard will provide a secure segment for a company’s executives on the network?
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If you need to increase the bandwidth for a web server handling high traffic, which standard is the best option?
If you need to increase the bandwidth for a web server handling high traffic, which standard is the best option?
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What is the source of interference when an echo affects a signal?
What is the source of interference when an echo affects a signal?
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Which transmission type is most affected by jitter?
Which transmission type is most affected by jitter?
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Which type of noise is classified as continuous?
Which type of noise is classified as continuous?
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Which factor is most effective at reducing noise on a connection?
Which factor is most effective at reducing noise on a connection?
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What is being added in an arithmetic checksum?
What is being added in an arithmetic checksum?
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What response will Station B send if packet 100-199 is delayed and packet 200-299 arrives first?
What response will Station B send if packet 100-199 is delayed and packet 200-299 arrives first?
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How many packets can be transmitted simultaneously using the stop-and-wait error control method?
How many packets can be transmitted simultaneously using the stop-and-wait error control method?
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Which of these error types may elude detection by a CRC-32 system?
Which of these error types may elude detection by a CRC-32 system?
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Study Notes
Data Transmission
- Data is represented by various signals
- Continuous signals have values that change continuously
- Discrete signals have values that change in steps or discrete values
Electromagnetic Spectrum
- Ultraviolet waves, visible light waves, radio waves, and X-rays are part of the electromagnetic spectrum
- Different parts are used for various forms of communication
Network Devices
- A web server handles web page requests
- A router forwards data between networks
- A switch connects devices on the same network
- A local server is a server on a local computer network
Network Types
- PAN (Personal Area Network) is used by one person at a time with devices nearby
- LAN (Local Area Network) is for a limited area like a home or office
- WAN (Wide Area Network) is a large network covering large geographical areas
Database Storage
- DBaaS (Database-as-a-Service) is cloud-based database storage
- Cloud providers often store databases on their servers
- Cloud storage can be more secure and easier to manage
Data Transmission Media
- Fiber-optic cables use light pulses for data transmission
- Twisted-pair cables are examples of wired cables and are a common choice for Ethernet connections
Network Communication Standards
- 802.11 standards regulate Wi-Fi technology.
- Newer standards like 802.11ax and 802.11ac offer higher speeds and capabilities
- TCP/IP is the primary communication protocol on the Internet, which translates the language spoken by devices
Signal Types
- Digital signals are discrete values (0 or 1)
- Analog signals continuously changes
Computer Communication
- In a computer network, data travels via electronic/wired/wireless means, potentially through multiple devices
- Each device in a network adheres to a set of protocols that ensure successful communication
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Description
Test your knowledge on data transmission, electromagnetic spectrum, network devices, and types of networks. This quiz covers key concepts related to the operation and management of networks, including database storage solutions. Assess your understanding of these critical IT areas.
