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Questions and Answers
What is the primary function of transmission media?
What is the primary function of transmission media?
Transmission media only includes optical fibers and copper wires.
Transmission media only includes optical fibers and copper wires.
False
Name one type of transmission media classified as Wired/Guided/Bounded.
Name one type of transmission media classified as Wired/Guided/Bounded.
Twisted pair
Transmission media is also referred to as a __________.
Transmission media is also referred to as a __________.
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Match the following types of signals with their definitions:
Match the following types of signals with their definitions:
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Which of the following is NOT a characteristic of transmission media?
Which of the following is NOT a characteristic of transmission media?
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Both wired and wireless transmission media are commonly used for data transmission.
Both wired and wireless transmission media are commonly used for data transmission.
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What is the reason signals are contained within bound transmission media?
What is the reason signals are contained within bound transmission media?
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What type of connector is commonly associated with coaxial cables?
What type of connector is commonly associated with coaxial cables?
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The OSI model and TCP/IP model are identical in terms of layer functionality.
The OSI model and TCP/IP model are identical in terms of layer functionality.
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What type of network topology connects nodes in a closed loop?
What type of network topology connects nodes in a closed loop?
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A __________ cable is often used for high-speed internet connections and is known for its durability.
A __________ cable is often used for high-speed internet connections and is known for its durability.
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Match the networking components with their primary functions:
Match the networking components with their primary functions:
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Which type of cable is least affected by electromagnetic interference?
Which type of cable is least affected by electromagnetic interference?
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In a client-server model, the server provides resources to the client.
In a client-server model, the server provides resources to the client.
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Name a topology that connects all devices through a single central hub.
Name a topology that connects all devices through a single central hub.
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Which type of connector is represented by the image titled 'RJ45 Connector'?
Which type of connector is represented by the image titled 'RJ45 Connector'?
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Star topology and bus topology are the same.
Star topology and bus topology are the same.
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What is the primary function of a router in a network?
What is the primary function of a router in a network?
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A __________ is used to connect and shield twisted pair cables.
A __________ is used to connect and shield twisted pair cables.
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Which cable type is known for its minimal loss in signal over long distances?
Which cable type is known for its minimal loss in signal over long distances?
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Match the following network topologies with their features:
Match the following network topologies with their features:
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Thicknet and thinnet refer to two types of coaxial cables.
Thicknet and thinnet refer to two types of coaxial cables.
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Name one advantage of using fiber optic cables over traditional copper cables.
Name one advantage of using fiber optic cables over traditional copper cables.
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What type of cable is known for being commonly used in networking and consists of twisted pairs of wires?
What type of cable is known for being commonly used in networking and consists of twisted pairs of wires?
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Shielded Twisted Pair (STP) cables provide better protection against interference compared to Unshielded Twisted Pair (UTP) cables.
Shielded Twisted Pair (STP) cables provide better protection against interference compared to Unshielded Twisted Pair (UTP) cables.
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What does the acronym WAN stand for in networking?
What does the acronym WAN stand for in networking?
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A network topology that connects devices in a circular fashion is called a ______.
A network topology that connects devices in a circular fashion is called a ______.
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Match the following types of cables with their characteristics:
Match the following types of cables with their characteristics:
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Which of the following images represents a Wide Area Network (WAN)?
Which of the following images represents a Wide Area Network (WAN)?
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UTP cables are more expensive than STP cables.
UTP cables are more expensive than STP cables.
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In a star topology, all devices are connected to a central ______.
In a star topology, all devices are connected to a central ______.
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Which type of communication wave is omni-directional and can easily penetrate buildings?
Which type of communication wave is omni-directional and can easily penetrate buildings?
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Infrared waves can penetrate obstacles easily, similar to radiowaves.
Infrared waves can penetrate obstacles easily, similar to radiowaves.
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What does bandwidth refer to in data transmission?
What does bandwidth refer to in data transmission?
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_________________ are widely used for mobile phone communication and television distribution.
_________________ are widely used for mobile phone communication and television distribution.
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Match the following communication waves with their characteristics:
Match the following communication waves with their characteristics:
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What is a significant characteristic of radiowaves at high frequencies?
What is a significant characteristic of radiowaves at high frequencies?
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Bandwidth does not affect the data rates supported by a communication channel.
Bandwidth does not affect the data rates supported by a communication channel.
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List two common uses of infrared communication.
List two common uses of infrared communication.
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Study Notes
Transmission Media
- Transmission media are pathways that carry information from a sender to a receiver also known as a communication channel.
- Each media has different properties like bandwidth, delay, cost, and ease of installation and maintenance.
Types of Transmission Media
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Guided/Wired/Bounded Media
- These are tangible cables with a physical existence that are limited or bounded by the physical geography.
- The term bounded or guided refers to the signal being contained within an enclosed physical path.
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Unguided/Wireless/Unbounded Media
- These transmit signals without the use of a physical guide.
- They utilize electromagnetic waves to transmit data.
- The waves travel freely through the air or space.
Guided Media
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Twisted Pair Cable
- Used in telephone lines, Ethernet networks, and for connecting computers to modems.
- Twisted pair cabling reduces the amount of interference between the two wires in the cable.
- Unshielded Twisted Pair (UTP) is the most common type and is less expensive, although more susceptible to interference.
- Shielded Twisted Pair (STP) is more expensive and offers greater protection from interference.
-
Coaxial Cable
- Consists of a central wire surrounded by an insulator, then a braided metallic shield, and a final outer insulator.
- Used in cable television, internet connections, and some older computer networks.
- Offer better performance than twisted pair cables because they shield better against interference.
- Thicknet/10Base5 is an older coaxial cable version used in Ethernet networks.
- Thinnet/10Base2 is a smaller version of coaxial cable that was also used in earlier Ethernet networks.
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Fiber Optic Cable
- Made of glass or plastic fibers that transmit data as light pulses.
- Known for high bandwidth, low signal loss, and immunity to electromagnetic interference.
- Used in high-speed internet connections, telecommunications, and in networks requiring faster speeds and high capacity.
- Single-mode fiber supports long distances and high data rates.
- Multi-mode fiber supports shorter distances and lower data rates but is less expensive.
Unguided Media
-
Microwave
- Use radio waves in the microwave frequency band.
- Typically used for long-distance communications and satellite television broadcasts.
- Able to transmit large amounts of data and are suitable for point-to-point communication.
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Radio Waves
- Used in various wireless technologies, such as Wi-Fi, cellular phones, and radio broadcasting.
- Can penetrate buildings and travel long distances.
- At high frequencies, radiowaves tend to travel in straight lines and bounce off obstacles.
- Susceptible to interference from other devices that emit radio waves.
-
Infrared
- Primarily used for short-distance communication.
- Offers a great unbound photonic solution as it uses light.
- Cannot penetrate through obstacles and is limited to line-of-sight communication.
- Commonly used in TV remotes, wireless keyboards, and mice.
Data Transmission Factors
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Bandwidth
- Refers to the data carrying capacity of a particular medium or channel.
- Higher bandwidth allows for greater data rates.
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Delay
- Refers to the time it takes for a signal to travel from the sender to the receiver.
- Delay can be affected by factors such as distance, the type of media used and the amount of traffic on the network.
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Cost
- The installation and maintenance costs of the transmission media can vary widely depending on the type of media used.
- Wireless media tends to have a lower initial cost but higher long-term costs because of ongoing maintenance.
- Wired media like fiber optic cables are more expensive to install but require less maintenance over time.
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Security
- Wired media is generally more secure than wireless media because the signals are contained within a physical cable.
- Wireless media is more vulnerable to eavesdropping and other security risks.
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Flexibility
- Wireless media is much more flexible than wired media.
- Wireless allows for easy reconfiguration and expansion of the network without the need for physical cabling.
- Wired media is more difficult to install and re-route.
-
Reliability
- Wired media is generally more reliable than wireless media.
- Physical cables are less susceptible to interference and disruptions.
- Wireless signals can be affected by weather conditions, obstructions, and other factors.
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Description
Test your knowledge on the different types of transmission media, including guided and unguided methods. Explore the properties, applications, and characteristics of various media such as twisted pair cables and wireless transmission. This quiz helps solidify your understanding of communication channels.
