Podcast
Questions and Answers
What is the main disadvantage of optic fiber cables?
What is the main disadvantage of optic fiber cables?
- They are expensive and unidirectional. (correct)
- They are not affected by electromagnetic noise.
- They are not lightweight.
- They have lower bandwidth.
Which electromagnetic frequency range is commonly used for wireless communication?
Which electromagnetic frequency range is commonly used for wireless communication?
- 900 THz to 100 GHz
- 100 GHz to 100 THz
- 300 Hz to 3 kHz
- 3 kHz to 900 THz (correct)
What is a key advantage of using fiber optic cables in backbone networks?
What is a key advantage of using fiber optic cables in backbone networks?
- They are the cheapest option available.
- They can transfer signals over short distances only.
- They have higher bandwidth for better data transfer rate. (correct)
- They are the only option for full duplex communication.
What technology utilizes microwaves for communication?
What technology utilizes microwaves for communication?
How do wireless technologies facilitate communication?
How do wireless technologies facilitate communication?
To achieve full duplex communication using optic fiber, how many cables are needed?
To achieve full duplex communication using optic fiber, how many cables are needed?
Which of the following is NOT a type of wireless communication technology?
Which of the following is NOT a type of wireless communication technology?
What property do fiber optic cables have that allows signals to travel longer distances?
What property do fiber optic cables have that allows signals to travel longer distances?
What material surrounds the copper core in a coaxial cable?
What material surrounds the copper core in a coaxial cable?
What is the primary advantage of the design of coaxial cables?
What is the primary advantage of the design of coaxial cables?
How does optical fiber transmit data?
How does optical fiber transmit data?
What is the purpose of cladding in optical fiber cables?
What is the purpose of cladding in optical fiber cables?
Which of the following describes the core of the coaxial cable?
Which of the following describes the core of the coaxial cable?
Which frequency characteristic is relevant to optical fiber transmission?
Which frequency characteristic is relevant to optical fiber transmission?
What is typically found as an outer layer in coaxial cables?
What is typically found as an outer layer in coaxial cables?
Which factor enhances the transmission capabilities of coaxial cables?
Which factor enhances the transmission capabilities of coaxial cables?
What is the frequency range of radio waves?
What is the frequency range of radio waves?
Which of the following properties is true for microwaves?
Which of the following properties is true for microwaves?
What is a key characteristic of radio waves in the frequency range of 300 KHz - 30 MHz?
What is a key characteristic of radio waves in the frequency range of 300 KHz - 30 MHz?
Which type of electromagnetic wave is primarily used in AM and FM radio?
Which type of electromagnetic wave is primarily used in AM and FM radio?
What distinguishes microwaves from radio waves regarding their movement?
What distinguishes microwaves from radio waves regarding their movement?
Which electromagnetic wave category can penetrate walls?
Which electromagnetic wave category can penetrate walls?
Which of the following statements about infrared waves is correct?
Which of the following statements about infrared waves is correct?
What can be said about the susceptibility of radio waves to interference?
What can be said about the susceptibility of radio waves to interference?
What does PPP ensure between two communicating devices?
What does PPP ensure between two communicating devices?
Which of the following is a key function of the Simple Mail Transfer Protocol (SMTP)?
Which of the following is a key function of the Simple Mail Transfer Protocol (SMTP)?
What requirement must devices meet to utilize the Point to Point Protocol (PPP)?
What requirement must devices meet to utilize the Point to Point Protocol (PPP)?
In the context of FTP, what is managed when transferring files between different systems?
In the context of FTP, what is managed when transferring files between different systems?
What is one of the responsibilities of PPP regarding data transmission?
What is one of the responsibilities of PPP regarding data transmission?
What type of connection does Point to Point Protocol (PPP) establish?
What type of connection does Point to Point Protocol (PPP) establish?
What aspect of email does SMTP not concern itself with?
What aspect of email does SMTP not concern itself with?
Which feature does NOT belong to the operation of FTP?
Which feature does NOT belong to the operation of FTP?
What is the main characteristic of circuit switching?
What is the main characteristic of circuit switching?
In packet switching, what happens to the packets after they are transmitted?
In packet switching, what happens to the packets after they are transmitted?
Which of the following best describes a packet in packet switching?
Which of the following best describes a packet in packet switching?
What is a key difference between circuit switching and packet switching?
What is a key difference between circuit switching and packet switching?
What role does the switching equipment play in circuit switching?
What role does the switching equipment play in circuit switching?
Why is packet switching considered more flexible than circuit switching?
Why is packet switching considered more flexible than circuit switching?
Which statement best describes the channel usage in circuit switching?
Which statement best describes the channel usage in circuit switching?
What is an example of circuit switching mentioned in the context?
What is an example of circuit switching mentioned in the context?
Study Notes
Switching Techniques
-
Circuit Switching
- Establishes a dedicated path between sender and receiver before communication starts.
- Utilizes a connected sequence of links for the entire duration of a call, typical in traditional telephone systems.
- Example: A telephone call where a physical channel is set up from one phone to another.
-
Packet Switching
- Breaks down messages into smaller packets for transmission.
- Enables independent routing of packets through the network, improving efficiency.
- Each packet consists of a header (destination and information) and the main message.
- Reassembly occurs at the destination, allowing for flexible communication channels.
Coaxial Cable
- Composed of a copper core surrounded by insulating material and an outer conductor, usually copper mesh.
- Effective at transmitting signals over longer distances with higher frequencies while minimizing interference.
- Commonly used for connecting different local area networks (LANs).
Optical Fiber Cable
- Transmits data as light through a thin strand of glass using refraction.
- Offers higher bandwidth and data transfer rates than traditional cables, but is more expensive.
- Requires two cables for full duplex communication, as it is typically unidirectional.
- Lightweight and immune to electromagnetic interference, allowing signals to travel longer distances.
Wireless Transmission Media
- Uses electromagnetic signals to transmit information through the air.
- Electromagnetic spectrum for wireless communication ranges from 3 KHz to 900 THz.
- Categories of waves used:
- Radio Waves (3 KHz - 1 GHz): Omni-directional, good for long distances; used in AM/FM radio.
- Microwaves (1 GHz - 300 GHz): Unidirectional, suitable for point-to-point communication.
- Infrared Waves: Utilized in short-range communications.
Point to Point Protocol (PPP)
- Establishes a direct connection between two devices for data exchange, ensuring data integrity.
- Commonly used in device communication, such as between routers or home computers and ISP servers.
- Maintains packet order, detects lost packets, and requests retransmission if necessary.
Simple Mail Transfer Protocol (SMTP)
- Protocol for sending emails, focusing on the message header rather than its content.
- Each email contains the addresses of recipients in the header.
- The SMTP sender queues outgoing mails and transmits them to the designated destination(s).
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Description
This quiz explores two fundamental switching techniques: Circuit Switching and Packet Switching. Designed for those studying Voice over Long-Term Evolution (VoLTE), it covers the principles of establishing dedicated paths for communication. Test your understanding of these key concepts in modern telecommunications.
