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Networking Fundamentals > Module 3 > Flashcards

Module 3 Flashcards

1
Q

Question: What type of electrical cables are coaxial cables?

A

Answer: Coaxial cables are types of electrical cables that have an inner conductor surrounded by a tubular insulating layer, which is surrounded by a tubular conducting shield.

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2
Q

Question: What is the purpose of the dielectric material in a coaxial cable?

A

Answer: The dielectric material in a coaxial cable separates the inner conductor from the shield.

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3
Q

Question: What are some common applications for coaxial cables?

A

Answer: Coaxial cables are used in a variety of applications, including television and radio broadcasting, cable television, and computer network connections.

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4
Q

Question: Why are coaxial cables useful for carrying high-frequency signals?

A

Answer: Coaxial cables are useful for carrying high-frequency signals over long distances because they are less susceptible to interference from external sources such as electromagnetic fields.

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5
Q

Question: What is the purpose of twisting two conductors in a twisted pair cable?

A

Answer: The purpose of twisting two conductors in a twisted pair cable is to cancel out electromagnetic interference (EMI) from external sources.

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6
Q

Question: What is the pitch of a twisted pair cable?

A

Answer: The pitch of a twisted pair cable is the number of twists per unit length (such as per meter or per foot).

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7
Q

Question: What are the two most common types of twisted pair cables?

A

Answer: The two most common types of twisted pair cables are unshielded twisted pair (UTP) and shielded twisted pair (STP).

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8
Q

Question: What are the differences between UTP and STP cables?

A

Answer: UTP cables have no shielding around the wires, while STP cables have a metallic shield to reduce the amount of EMI that reaches the wires.

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9
Q

Question: In which application twisted pair cabling is commonly used?

A

Answer: Twisted pair cabling is commonly used in communication systems such as telephone networks, and in data networks like Ethernet and home networks.

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10
Q

Question: What is TIA/EIA-568B?

A

Answer: TIA/EIA-568B is a standard for wiring in commercial and residential buildings in the United States, which defines the order of the eight wires in an eight-wire cable.

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11
Q

Question: What is the difference between TIA/EIA-568A and TIA/EIA-568B?

A

Answer: TIA/EIA-568A and TIA/EIA-568B are similar, but the order of the first four wires is reversed in TIA/EIA-568A.

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12
Q

Question: What is the purpose of structured cabling?

A

Answer: Structured cabling is a method of organizing and managing cabling in a building or campus, which allows for easy expansion and reconfiguration of the cabling system as needed.

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13
Q

Question: What is ISO/IEC 11801?

A

Answer: ISO/IEC 11801 is an international standard for data cabling, which defines the requirements for cabling systems used in premises cabling, including cable types, connector types, and transmission performance.

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14
Q

Question: What is the order of wires in T568A standard?

A

Answer: The order of wires in T568A standard is white-green, green, white-orange, blue, white-blue, orange, white-brown, brown.

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15
Q

Question: What is the order of wires in T568B standard?

A

Answer: The order of wires in T568B standard is orange, white-orange, green, white-green, blue, white-blue, brown, white-brown.

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16
Q

Question: What is the main difference between shielded twisted pair (STP) and unshielded twisted pair (UTP) cables?

A

Answer: The main difference between STP and UTP cables is the presence or absence of shielding around the wires. STP cables have a metallic shield around the wires, while UTP cables have no shielding.

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17
Q

Question: What is the purpose of the shielding in STP cables?

A

Answer: The shielding in STP cables is designed to reduce the amount of electromagnetic interference (EMI) that reaches the wires.

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18
Q

Question: In which environments are STP cables more suitable?

A

Answer: STP cables are more suitable for use in environments where there is a high level of EMI, such as industrial settings.

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19
Q

Question: In which environments are UTP cables more suitable?

A

Answer: UTP cables are more suitable for use in residential and commercial buildings, and are commonly used in Ethernet networks and home networks.

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20
Q

Question: How does FTP/ScTP differ from UTP cables?

A

Answer: FTP/ScTP cables have a small shielding around the wire, which provides better protection against EMI than UTP but still less than STP.

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21
Q

Question: What are CAT cabling standards?

A

Answer: CAT cabling standards are a set of standards established by the Telecommunications Industry Association (TIA) and the International Organization for Standardization (ISO) for the performance of twisted pair cables used in networking and telecommunications.

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22
Q

Question: What is the data transfer rate of CAT5 standard?

A

Answer: CAT5 standard supports data transfer rates of up to 100 MHz and can transmit data at speeds of up to 100 Mbps.

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23
Q

Question: What is the data transfer rate of CAT5e standard?

A

Answer: CAT5e standard supports data transfer rates of up to 350 MHz and can transmit data at speeds of up to 1000 Mbps.

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24
Q

Question: What is the data transfer rate of CAT6 standard?

A

Answer: CAT6 standard supports data transfer rates of up to 550 MHz and can transmit data at speeds of up to 10 Gbps.

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25
Q

Question: What is the data transfer rate of CAT7 standard?

A

Answer: CAT7 standard supports data transfer rates of up to 600 MHz and can transmit data at speeds of up to 10 Gbps over 100 meters of cable.

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26
Q

Question: Which factors should be considered when choosing a cabling standard?

A

Answer: When choosing a cabling standard, it’s important to consider the network’s current and future bandwidth requirements, as well as the distance that the data will need to travel.

27
Q

Question: Are there standards for optical fiber cabling?

A

Answer: Yes, there are standards for optical fiber cabling such as OM1, OM2, OM3, OM4 and OM5 which define the performance characteristics of different types of multimode optical fiber cables.

28
Q

Question: What is fiber optic technology?

A

Answer: Fiber optic technology uses thin glass or plastic fibers to transmit data in the form of light.

29
Q

Question: What are the advantages of fiber optic cables over traditional copper cables?

A

Answer: Fiber optic cables have larger bandwidth, faster data transfer rates, more secure and are not affected by electromagnetic interference (EMI)

30
Q

Question: What are the two main types of fiber optic cables?

A

Answer: The two main types of fiber optic cables are single-mode and multimode.

31
Q

Question: What is the use of single-mode fibers?

A

Answer: Single-mode fibers are used for long-distance communications.

32
Q

Question: What is the use of multimode fibers?

A

Answer: Multimode fibers are used for shorter distance communications.

33
Q

Question: How are fiber optic cables connected to devices and equipment?

A

Answer: Fiber optic cables are connected to devices and equipment using connectors such as SC, LC, ST, and FC connectors.

34
Q

Question: What is susceptibility to interference in cables?

A

Answer: Susceptibility to interference refers to the ability of a cable to resist the effects of external electromagnetic interference (EMI) or radio frequency interference (RFI).

35
Q

Question: What are the effects of EMI and RFI on cables?

A

Answer: EMI and RFI can cause errors or loss of data in the signals that are transmitted over the cable, such as attenuation, crosstalk, and signal distortion.

36
Q

Question: Which type of cable is more susceptible to EMI and RFI?

A

Answer: Unshielded twisted pair (UTP) cables are more susceptible to EMI and RFI than shielded cables.

37
Q

Question: Which type of cable is less susceptible to EMI and RFI?

A

Answer: Fiber optic cables are less susceptible to EMI and RFI than other types of cables.

38
Q

Question: What are the methods to reduce susceptibility of cables to interference?

A

Answer: Shielding the cables, proper installation techniques such as proper grounding, routing the cables away from sources of interference and using filters or other signal conditioning devices can help to reduce the susceptibility of cables to interference.

39
Q

Question: What is susceptibility to interception in cables?

A

Answer: Susceptibility to interception refers to the ease with which the data transmitted over a cable can be intercepted or accessed by unauthorized individuals or devices.

40
Q

Question: What are the effects of interception on cables?

A

Answer: Interception can result in data breaches, loss of confidential information, and unauthorized access to a network.

41
Q

Question: Which type of cable is more susceptible to interception?

A

Answer: Unshielded twisted pair (UTP) cables are relatively easy to tap into, making them more susceptible to interception.

42
Q

Question: Which type of cable is less susceptible to interception?

A

Answer: Shielded twisted pair (STP) cables and Coaxial cables have a metallic shield around the wires that helps to reduce the ability to tap into the cable, making them less susceptible to interception.

43
Q

Question: What are the methods to reduce susceptibility of cables to interception?

A

Answer: Encryption, access controls, and monitoring tools to detect and prevent unauthorized access to the network can help to reduce the susceptibility of cables to interception.

44
Q

Question: What are wireless networking standards?

A

Answer: Wireless networking standards are the technical specifications and protocols used for wireless communication between devices. They define the characteristics of the wireless network, such as the frequency band, data transfer rate, and security protocols.

45
Q

Question: What is WiFi?

A

Answer: WiFi is a widely used standard for wireless local area networks (WLANs) and is based on the IEEE 802.11 standard. It operates in the 2.4GHz and 5GHz frequency bands and supports data transfer rates of up to 6 Gbps.

46
Q

Question: What is Bluetooth?

A

Answer: Bluetooth is a short-range wireless technology that is used to connect devices such as smartphones, computers, and peripherals. It operates in the 2.4GHz frequency band and supports data transfer rates of up to 24 Mbps.

47
Q

Question: What is Zigbee?

A

Answer: Zigbee is a low-power, low-data-rate wireless technology that is commonly used in smart home and industrial automation applications. It operates in the 2.4GHz frequency band and supports data transfer rates of up to 250 kbps.

48
Q

Question: What is Z-Wave?

A

Answer: Z-Wave is a low-power wireless technology that is commonly used in smart home and industrial automation applications. It operates in the 908.42 MHz frequency band and supports data transfer rates of up to 100 kbps.

49
Q

Question: What is LoRaWAN?

A

A long-range wireless technology that is used for wide-area networks (WANs) and the Internet of Things (IoT) applications. It operates in the sub-gigahertz frequency band and supports data transfer rates of up to 27 kbps.

50
Q

Question: What is 5G?

A

Answer: 5G is the latest generation of cellular wireless technology that offers higher data transfer rates and lower latency than previous generations. It operates in a range of frequency bands, including sub-6GHz and millimeter wave (mmWave) bands. It is designed for a wide range of applications including mobile broadband, IoT, and high-speed wireless communications.

51
Q

Question: What factors should be considered when choosing a wireless networking standard?

A

Answer: The factors that should be considered when choosing a wireless networking standard include the required data transfer rate, range, power consumption, and security requirements.

52
Q

Question: What is wireless networking security?

A

Answer: Wireless networking security refers to the measures and technologies used to protect wireless networks and devices from unauthorized access and attacks.

53
Q

Question: What is encryption?

A

Answer: Encryption is the process of converting plain text data into a code to protect it from unauthorized access.

54
Q

Question: What are access controls?

A

Answer: Access controls are used to restrict access to a wireless network by only allowing authorized devices to connect.

55
Q

Question: What is a firewall?

A

Answer: A firewall is a security system that monitors and controls incoming and outgoing network traffic based on a set of security rules.

56
Q

Question: What is a Virtual Private Network (VPN)?

A

Answer: A VPN is a secure, encrypted connection between two devices or networks.

57
Q

Question: What is a Wireless Intrusion Prevention System (WIPS)?

A

Answer: A WIPS is a security system that monitors wireless networks for unauthorized access points and other security threats, and then takes action to prevent or mitigate those threats.

58
Q

Question: What are wireless networking modes?

A

Answer: Wireless networking modes refer to the different ways in which wireless devices can communicate with each other.

59
Q

Question: What is ad-hoc mode?

A

Answer: In ad-hoc mode, wireless devices communicate directly with each other without the use of a central access point.

60
Q

Question: What is infrastructure mode?

A

Answer: In infrastructure mode, wireless devices communicate with each other through a central access point.

61
Q

Question: What is repeater mode?

A

Answer: In repeater mode, a wireless device is used to extend the range of an existing wireless network.

62
Q

Question: What is bridge mode?

A

Answer: In bridge mode, wireless devices are used to connect two separate wired networks together.

63
Q

Question: What is access point mode?

A

Answer: In access point mode, a wireless device is used to provide wireless access to a wired network.

Networking Fundamentals (8 decks)

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