CCT4 Study Guide 2011

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A brief study guide outlining the CCT4 definitions and terms. Please enter your Name.

CCT4 Study Guide 2011 - Quiz

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  • 2. 

    When your frustrated while driving, what should you do to calm down?

    • Call your supervisor

    • Pull over, Count to 10

    • Speed up to get to the job faster

    • Call in sick

    Correct Answer
    A. Pull over, Count to 10
    Explanation
    When feeling frustrated while driving, it is important to calm down to ensure safety on the road. The suggested action of pulling over and counting to 10 allows the driver to take a break from the stressful situation and regain composure. This helps in reducing stress levels and making better decisions while driving. Calling the supervisor, speeding up, or calling in sick are not appropriate actions to handle frustration while driving.

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  • 3. 

    POS

    • Point of Sale

    • Point Over Salad

    • Piece of Shoe

    • Point of Static

    Correct Answer
    A. Point of Sale
    Explanation
    The correct answer is "Point of Sale." This refers to the location where a transaction is completed between a buyer and a seller, typically involving the exchange of goods or services for payment. It is commonly used in retail businesses where customers make purchases at a physical store or online.

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  • 4. 

    What do you do before powering up the EMTA/Gateway.

    • Interpret Modem Lights

    • Connect RF Signal

    • Check for RF Signal leakage

    • Reset Mode

    Correct Answer
    A. Connect RF Signal
    Explanation
    Before powering up the EMTA/Gateway, it is necessary to connect the RF signal. This means ensuring that the device is properly connected to the RF (radio frequency) signal source, such as a cable or satellite connection. Without a proper RF signal connection, the EMTA/Gateway will not be able to receive or transmit data effectively.

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  • 5. 

    A wireless network begins with an ___________.

    • Work order

    • Technician

    • Switch

    • Access Point

    Correct Answer
    A. Access Point
    Explanation
    A wireless network begins with an Access Point. An Access Point is a device that allows wireless devices to connect to a wired network. It acts as a central hub for communication, transmitting and receiving data between wireless devices and the network. Without an Access Point, wireless devices would not be able to connect to the network and access the internet or other network resources. Therefore, an Access Point is essential for establishing a wireless network.

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  • 6. 

    66 Block - Signal goes in from ________ and out to the ________.

    • Top, Bottom

    • Left, Right

    • Right, Left

    • Bottom, Left

    Correct Answer
    A. Left, Right
    Explanation
    The signal goes in from the left side of the 66 Block and goes out to the right side.

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  • 7. 

    All lights are flashing on the front panel of EMTA.

    • Provisioning Mode

    • Download Mode

    • Off Hook

    • Short In Line (Voltage Present)

    Correct Answer
    A. Short In Line (Voltage Present)
    Explanation
    The correct answer is "Short In Line (Voltage Present)". This means that there is a short circuit in the line, causing a voltage to be present. This could be a potential safety hazard and should be addressed immediately.

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  • 8. 

    If two AP's reply to the probe, the device will use whichever has the __________ signal.

    • Weakest

    • Closest

    • Encrypted

    • Strongest

    Correct Answer
    A. Strongest
    Explanation
    If two access points (APs) reply to the probe, the device will use whichever AP has the strongest signal. This means that the device will connect to the AP that provides the strongest and most reliable signal strength, ensuring a stable and efficient connection.

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  • 9. 

    CLI

    • Communication Line Index

    • Company Line Index

    • Cumulative Leakage Index

    • Communication Leakage Index

    Correct Answer
    A. Cumulative Leakage Index
    Explanation
    The correct answer is Cumulative Leakage Index. The term CLI stands for Cumulative Leakage Index, which is a measure used in the utility industry to assess the overall condition of an electrical distribution system. It is a ratio that represents the total leakage current in the system relative to its maximum allowable value. The CLI helps utility companies identify potential issues with insulation and leakage currents, allowing them to take necessary measures to maintain the safety and efficiency of the electrical system.

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  • 10. 

    Packet Filtering, Proxy, and Sateful Alerts are features of a __________.

    • Router

    • Firewall

    • Switch

    • Modem

    Correct Answer
    A. Firewall
    Explanation
    Packet Filtering, Proxy, and Stateful Alerts are features commonly associated with firewalls. A firewall is a network security device that monitors and controls incoming and outgoing network traffic based on predetermined security rules. Packet filtering allows the firewall to examine each packet of data and decide whether to allow or block it based on specific criteria. Proxies act as intermediaries between clients and servers, enhancing security and performance. Stateful alerts enable the firewall to track the state of network connections and generate alerts if any suspicious activity is detected. Therefore, the correct answer is Firewall.

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  • 11. 

    HFC

    • Hybrid Fiber Coax

    • Hybrid Frequency Coax

    • Hole Fiber Coax

    • Hybrid Fiber Call

    Correct Answer
    A. Hybrid Fiber Coax
    Explanation
    The correct answer is Hybrid Fiber Coax. Hybrid Fiber Coax refers to a type of network architecture that combines both fiber optic and coaxial cable technologies. This combination allows for the transmission of data, voice, and video signals over long distances. The fiber optic cables are used for the backbone of the network, while the coaxial cables are used for the final connection to individual homes or businesses. This architecture is commonly used in cable television and internet service providers to deliver high-speed internet and cable TV services to customers.

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  • 12. 

    Allows group of phone stations to access common set of phone lines.

    • Key System/PBX

    • Switch/110 Block

    • Gateway/Switch

    • Switch/ILEC

    Correct Answer
    A. Key System/PBX
    Explanation
    A key system/PBX allows a group of phone stations to access a common set of phone lines. This means that multiple users can share a set of phone lines, making it more efficient and cost-effective. A key system/PBX acts as a central hub, managing and routing calls between the phone stations and the phone lines. It provides features such as call forwarding, call transfer, and voicemail, enhancing communication capabilities within the group.

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  • 13. 

    The crossing of modulation from one channel to another.

    • CSO

    • CTN

    • XMOD

    • CTB

    Correct Answer
    A. XMOD
    Explanation
    XMOD refers to the crossing of modulation from one channel to another. This means that the modulation from one channel is interfering with or affecting the modulation in another channel. This can result in distortion or interference in the transmission of signals.

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  • 14. 

    Provides a means of monitoring the various inputs and outputs without iterrupting service.

    • Node

    • Test Point

    • Passive Device

    • Tap

    Correct Answer
    A. Test Point
    Explanation
    A test point is a component or connection point in a circuit that provides a means of monitoring the various inputs and outputs without interrupting service. It allows for easy access to measure voltages, currents, or signals at specific points in the circuit without affecting the normal operation of the system. Test points are commonly used in electronic testing and troubleshooting to ensure proper functionality and diagnose any issues.

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  • 15. 

    A protocol used on the internet for exchanging files.

    • FTP

    • P2P

    • KAZAA

    • SPAM

    Correct Answer
    A. FTP
    Explanation
    FTP stands for File Transfer Protocol, which is a standard network protocol used for transferring files between a client and a server on a computer network. It allows users to upload, download, and manipulate files over the internet. FTP is commonly used by web developers to update websites, by businesses to share files with clients or partners, and by individuals to transfer files between their personal devices and remote servers. It provides a secure and efficient method for exchanging files over the internet.

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  • 16. 

    How many hours per month should be devoted by a champion?

    • 4 Hours

    • 10 Hours

    • 20 Hours

    • 8 Hours

    Correct Answer
    A. 20 Hours
    Explanation
    A champion should devote 20 hours per month. This suggests that being a champion requires a significant time commitment. It implies that in order to excel and achieve success, one must dedicate a substantial amount of time and effort to their chosen field or endeavor.

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  • 17. 

    A geogrpahically far set of devices connected to a network.

    • WAN

    • LAN

    • FTP

    • FQDN

    Correct Answer
    A. WAN
    Explanation
    A Wide Area Network (WAN) is a geographically far set of devices connected to a network. Unlike a Local Area Network (LAN) which is limited to a small area, a WAN covers a larger geographical area, such as multiple buildings, cities, or even countries. It allows for communication and data transfer between devices over long distances. FTP (File Transfer Protocol) and FQDN (Fully Qualified Domain Name) are not related to the geographical distance of devices connected to a network.

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  • 18. 

    Name the subnets for the following :  /30,  /29,  /28

    • .252, .249, .240

    • .252, .248, .240

    • .248, .240, .262

    • /29, /28, /30

    Correct Answer
    A. .252, .248, .240
    Explanation
    The correct answer is ".252, .248, .240" because the given subnets are in descending order of their network sizes. A /30 subnet has 2 usable IP addresses, a /29 subnet has 6 usable IP addresses, and a /28 subnet has 14 usable IP addresses. Therefore, the subnet with the largest network size is .240, followed by .248, and then .252.

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  • 19. 

    As the temperature of the device increases or decreases, the electron activity (voltage) also increases or decreases, producing more or less noise.

    • Discrete 2nd Order

    • Carrier to Noise Ratio

    • Cross Modulation

    • Thermal Noise

    Correct Answer
    A. Thermal Noise
    Explanation
    Thermal noise refers to the random fluctuations in voltage or current in a device that occur due to the thermal agitation of electrons. As the temperature of the device increases, the movement of electrons also increases, leading to an increase in voltage and hence more noise. Similarly, when the temperature decreases, the movement of electrons decreases, resulting in a decrease in voltage and less noise. Therefore, the given statement explains that the electron activity (voltage) in a device increases or decreases with temperature, leading to more or less thermal noise.

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  • 20. 

    Filter that passes higher frequencies but attenuates lower frequencies.

    • Basic Filter

    • HSI Filter

    • High Pass Filter

    • Low Pass Filter

    Correct Answer
    A. High Pass Filter
    Explanation
    A high pass filter is a type of filter that allows higher frequencies to pass through while attenuating or reducing lower frequencies. This means that it selectively filters out or blocks lower frequency signals while allowing higher frequency signals to pass through. In other words, it emphasizes or boosts the higher frequencies and reduces the lower frequencies.

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  • 21. 

    Which of the follwing is NOT a reasonable expectation for a Champion?

    • Meet as often as your schedules permit.

    • Drive the student's career Development.

    • When providing feedback, be honest, yet tactful.

    • Keep Commitments.

    Correct Answer
    A. Drive the student's career Development.
    Explanation
    The expectation of driving a student's career development is not reasonable for a Champion. A Champion is typically someone who supports and advocates for the success of a student, but they are not responsible for driving their career development. This task is usually the responsibility of the student themselves, with guidance and support from mentors, career counselors, or other professionals in the field. The Champion's role is to provide encouragement, guidance, and resources to help the student succeed, but they should not be solely responsible for driving their career development.

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  • 22. 

    Compression / Decompression.

    • MPEG

    • Digital Components of Video

    • CODEC

    • TFTP

    Correct Answer
    A. CODEC
    Explanation
    A CODEC stands for "coder-decoder" and is used for compression and decompression of digital data, such as audio or video. It is responsible for encoding the data into a smaller file size for efficient storage or transmission, and then decoding it back to its original format for playback or editing. Therefore, the given correct answer "CODEC" is related to the process of compression and decompression.

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  • 23. 

    Wireless connection speeds.

    • 1-10mbps

    • 11-52mbps

    • 11-54mbps

    • 100-101mbps

    Correct Answer
    A. 11-54mbps
    Explanation
    The correct answer is 11-54mbps. This range represents the wireless connection speeds that are commonly available. Mbps stands for megabits per second, which is a measure of data transfer speed. The range of 11-54mbps indicates that the wireless connection can provide speeds between 11 and 54 megabits per second. This range is typical for Wi-Fi connections using the 802.11b/g/n standards, which are commonly used in homes and offices.

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  • 24. 

    A mushroom spool should have ______ of excess wire.

    • 1-6 inches

    • 1-3 feet

    • 1-6 feet

    • 1-3 inches

    Correct Answer
    A. 1-3 feet
    Explanation
    A mushroom spool should have 1-3 feet of excess wire because this allows for flexibility and ease of use when connecting the wire to various devices or outlets. Having a longer length of wire ensures that there is enough slack to reach the desired destination without causing tension or strain on the wire. Additionally, the excess wire provides room for adjustments or repositioning if needed.

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  • 25. 

    A geogrpahically close set of devices connected to a single network.

    • WAN

    • DHCP

    • Firewall

    • LAN

    Correct Answer
    A. LAN
    Explanation
    A LAN (Local Area Network) is a geographically close set of devices connected to a single network. It is a network that covers a small area, typically within a single building or a group of buildings. LANs are commonly used in homes, offices, schools, and other small-scale environments. They allow devices such as computers, printers, and servers to communicate and share resources with each other. Unlike WAN (Wide Area Network), which covers a larger geographical area and connects multiple LANs together, a LAN is limited to a specific location. DHCP (Dynamic Host Configuration Protocol) and Firewall are network technologies and services that can be used within a LAN to manage IP addresses and provide security, respectively.

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  • 26. 

    Where is the demarcation if the customer owns their own equipment?

    • Ground Block

    • RF Input at Device

    • RF Input to Splitter

    • ILEC

    Correct Answer
    A. RF Input at Device
    Explanation
    The demarcation point is where the responsibility for the equipment shifts from the service provider to the customer. In this case, if the customer owns their own equipment, the demarcation point would be the RF Input at Device, as this is where the customer's equipment connects to the service provider's network.

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  • 27. 

    CRAN

    • Converged Regional Arris Network

    • Converged Regional Area Network

    • Conventional Resistance Area Network

    • Conventional Regional Attenuation Network

    Correct Answer
    A. Converged Regional Area Network
    Explanation
    The correct answer is "Converged Regional Area Network". This term refers to a network infrastructure that combines multiple regional networks into a single network. It allows for the consolidation and integration of various network services and resources, resulting in improved efficiency and cost-effectiveness.

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  • 28. 

    Used to insert power into the network for use by the active devices.

    • Power Diplexer

    • In-Line Equalizer

    • Power Inserter

    • In-Line Conditioner

    Correct Answer
    A. Power Inserter
    Explanation
    A power inserter is used to insert power into the network for use by the active devices. This device is commonly used in situations where the active devices in the network require additional power to function properly. The power inserter allows for the seamless integration of power and data transmission in the network, ensuring that the active devices receive the necessary power supply.

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  • 29. 

    MPEG-2 is primarly used for.....

    • DVD, CATV, HDTV

    • Video CD

    • CATV

    • Internet Streaming, Interactive TV

    Correct Answer
    A. DVD, CATV, HDTV
    Explanation
    MPEG-2 is primarily used for DVD, CATV, and HDTV. This video compression standard is commonly used for storing and transmitting high-quality video content on DVDs. It is also widely used in cable television (CATV) systems to deliver digital television signals. Additionally, MPEG-2 is the standard format for broadcasting high-definition television (HDTV) signals, ensuring efficient transmission and playback of high-quality video on HDTV devices.

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  • 30. 

    Map that is the corrected version of any map that incurred changes.

    • Design Map

    • As-Built Map

    • Tree Map

    • Base Map

    • Strand Map

    Correct Answer
    A. As-Built Map
    Explanation
    An As-Built Map refers to a corrected version of a map that has undergone changes or modifications. It is typically created after construction or renovation projects to accurately document any alterations made to the original design. This map serves as a record of the final state of the project, showing the actual layout, dimensions, and features. Unlike other types of maps listed, such as Design Map or Base Map, an As-Built Map reflects the real-world changes and is used for reference and future planning purposes.

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  • 31. 

    MPEG is superior to other CODEC's because......

    • It is easier to transmit.

    • It provides better quality with more compression.

    • Works better with DTCP.

    • Can fit more frames in a single sequence.

    Correct Answer
    A. It provides better quality with more compression.
    Explanation
    MPEG is superior to other CODECs because it provides better quality with more compression. This means that it can compress video files to a smaller size while still maintaining a high level of quality. This is important for various applications, such as streaming videos over the internet or storing videos on limited storage devices. By providing better quality with more compression, MPEG allows for efficient transmission and storage of video content.

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  • 32. 

    Four actions of a virus.

    • Camouflage, Republican, Event Watching, Delivery

    • Delivery, Event Writing, Replication, Camouflage

    • Event Watching, Replication, Camouflage, Delivery

    • Derive, Camouflage, Event Watching, Represent

    Correct Answer
    A. Event Watching, Replication, Camouflage, Delivery
    Explanation
    A virus performs four actions: Event Watching, Replication, Camouflage, and Delivery. Event Watching refers to the virus monitoring the system for specific events or triggers. Replication involves the virus making copies of itself to spread and infect other systems. Camouflage is the act of the virus disguising itself to avoid detection by antivirus software or other security measures. Delivery refers to the virus being transmitted or introduced into a system, typically through infected files or downloads.

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  • 33. 

    Connects building data wiring to switch.

    • EMTA

    • Patch Cable

    • Patch Bay

    • Router

    Correct Answer
    A. Patch Bay
    Explanation
    A patch bay is a piece of equipment that allows for the connection of various audio or data cables. It serves as a central hub where different cables can be plugged in and easily routed to different destinations, such as switches or other devices. In the context of the given question, a patch bay would be used to connect building data wiring to a switch, allowing for the efficient and organized management of the network connections.

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  • 34. 

    Forwards requests for a paticular IP port pair to another port pair.

    • Network Address Translation (NAT)

    • Fully Qualified Domain Name (FQDN)

    • Port Address Translation (PAT)

    • Virtual Private Network (VPN)

    Correct Answer
    A. Port Address Translation (PAT)
    Explanation
    Port Address Translation (PAT) is a technique used in computer networking to translate the source and/or destination IP address and port numbers of packets. In this context, it refers to forwarding requests for a particular IP port pair to another port pair. PAT allows multiple devices on a network to share a single public IP address by assigning different port numbers to each device. This helps conserve IPv4 addresses and enables communication between devices on a private network and the internet.

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  • 35. 

    Alarm Pin #1 Indicates what problem.....

    • Replace Battery

    • A/C Fail

    • Battery Missing

    • Battery Low

    Correct Answer
    A. A/C Fail
    Explanation
    The correct answer is A/C Fail. This means that if Alarm Pin #1 is indicating A/C Fail, it indicates that there is a problem with the air conditioning system.

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  • 36. 

    What is the return path range?

    • 2-52mhz

    • 5-45mhz

    • 54-100mhz

    • 5-42mhz

    Correct Answer
    A. 5-42mhz
    Explanation
    The return path range refers to the frequency range within which signals can be transmitted back from the user to the source. In this case, the correct answer is 5-42MHz, which means that signals can be sent back within this frequency range.

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  • 37. 

    How many pictures are in a normal video sequence?

    • 4

    • 8

    • 12

    • 16

    Correct Answer
    A. 12
    Explanation
    A normal video sequence typically consists of 24 frames per second (fps). Therefore, if we multiply the number of frames per second by the duration of the video in seconds, we can determine the total number of pictures in the sequence. Assuming the video is 0.5 seconds long, the total number of pictures would be 24 fps * 0.5 seconds = 12 pictures.

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  • 38. 

    According to the HSI installations task list, what do you do after checking peripheals?

    • Network Connections

    • Perform a cold boot

    • Perform drop cable checks

    • Check for minimum requirements

    Correct Answer
    A. Check for minimum requirements
    Explanation
    After checking peripherals, the next step according to the HSI installations task list is to check for minimum requirements. This involves ensuring that all the necessary specifications and conditions are met in order to proceed with the installation process. This step is crucial to ensure that the system is compatible and capable of supporting the required functions and tasks.

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  • 39. 

    The virus inserts copies of itself into other program files.

    • Delivery

    • Camouflage

    • Event Watching

    • Replication

    Correct Answer
    A. Replication
    Explanation
    The correct answer is "Replication" because it accurately describes the behavior of the virus inserting copies of itself into other program files. Replication refers to the ability of a virus or malware to reproduce and spread, often by infecting other files or systems. In this case, the virus is replicating itself by inserting copies of its code into other program files, allowing it to spread and potentially infect more systems.

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  • 40. 

    Horizontal bar that moves from the bottom to the top of a picture.

    • Composite Third Order

    • Hum Ingress

    • Hum Modulation

    • Constellation

    Correct Answer
    A. Hum Modulation
    Explanation
    A horizontal bar that moves from the bottom to the top of a picture is a characteristic of Hum Modulation. This term refers to the interference caused by a low-frequency electrical signal, known as "hum," which can manifest as horizontal bars moving vertically on a screen. The hum modulation disrupts the normal display of the picture, causing these bars to appear.

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  • 41. 

    Is a measure of signal strength relative to background noise in analog and digital communications.

    • SNR Ratio

    • MER Ratio

    • NPR Ratio

    • FEC Ratio

    Correct Answer
    A. SNR Ratio
    Explanation
    The SNR (Signal-to-Noise Ratio) is a measure of the strength of a signal compared to the level of background noise in both analog and digital communications. It indicates how much the signal stands out from the noise, with a higher SNR indicating a clearer and more reliable signal. This ratio is important in determining the quality and reliability of a communication system, as a higher SNR generally leads to better performance and fewer errors in data transmission.

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  • 42. 

    How many bits in a 64QAM carrier?

    • 10

    • 9

    • 6

    • 3

    Correct Answer
    A. 6
    Explanation
    A 64QAM carrier uses 6 bits. QAM stands for Quadrature Amplitude Modulation, which is a modulation scheme that combines both amplitude and phase modulation. In 64QAM, there are 64 possible combinations of amplitude and phase, which can be represented by 6 bits. Each combination represents a different symbol that carries information. Therefore, a 64QAM carrier requires 6 bits.

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  • 43. 

    Three layers fo a fiber strand.

    • Coating, Core, Cladding

    • Conductor, Jacket, Core

    • Dielectric, Core, Cladding

    • Core, Sheath, Cladding

    Correct Answer
    A. Coating, Core, Cladding
    Explanation
    The correct answer is Coating, Core, Cladding. In fiber optics, the coating is the outermost layer that protects the fiber from external elements. The core is the central part of the fiber where the light signals travel through. The cladding is the layer surrounding the core, which has a lower refractive index to help keep the light signals contained within the core.

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  • 44. 

    What does a Node do?

    • Converts RF to Light

    • Converts Light to RF

    • RF Distribution System

    • Light Distribution System

    Correct Answer
    A. Converts Light to RF
    Explanation
    A node is a device that converts light signals to radio frequency (RF) signals. This means that it takes in light signals and converts them into RF signals that can be transmitted over a network. This conversion allows for the transmission of data over long distances using optical fibers. By converting light to RF, the node enables the distribution of data signals through an RF distribution system. Therefore, the correct answer is "Converts Light to RF".

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  • 45. 

    Output Voltage of an LPSU.

    • 50WATTS

    • 48DCV

    • 48VDC

    • 50VDC

    Correct Answer
    A. 48VDC
    Explanation
    The correct answer is 48VDC. This is because the question is asking for the output voltage of an LPSU (Low Power Supply Unit) and the given options include different voltage values. Among these options, 48VDC is the only one that matches the given information.

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  • 46. 

    What is the most common cause of signal leakage?

    • Loose F-Connectors in the house

    • Poorly Installed Splitters

    • Poorly Installed Ground Block

    • Poorly Installed F-Connectors

    Correct Answer
    A. Poorly Installed F-Connectors
    Explanation
    Poorly installed F-connectors are the most common cause of signal leakage. When F-connectors are not properly installed, they can result in loose connections, which can cause signal leakage. Signal leakage refers to the unintended transmission of signals from a cable system, which can cause interference and decrease signal quality. Therefore, it is important to ensure that F-connectors are installed correctly to prevent signal leakage.

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  • 47. 

    A digital modulation scheme wherin the carrier is shifted in 90-degree steps.

    • CTB

    • CSO

    • QPSK

    • XMOD

    Correct Answer
    A. QPSK
    Explanation
    QPSK stands for Quadrature Phase Shift Keying, which is a digital modulation scheme where the carrier signal is shifted in 90-degree steps. In QPSK, two bits are encoded per symbol, allowing for higher data transmission rates compared to simpler modulation schemes. By shifting the carrier signal in 90-degree steps, QPSK is able to transmit four different phase states, each representing a different combination of two bits. This allows for efficient use of bandwidth and improved spectral efficiency.

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  • 48. 

    Measures how often an error occurs in a given amount of data.

    • DIM (Digital Impedance)

    • MER (Modulation Error Ratio)

    • FEC (Forward Error Correction)

    • BER (Bit Error Rate)

    Correct Answer
    A. BER (Bit Error Rate)
    Explanation
    The Bit Error Rate (BER) is a measure of the frequency at which errors occur in a given amount of data. It is commonly used in digital communication systems to assess the quality of the transmission. A lower BER indicates a better quality of the transmission, as it means that fewer errors are occurring. Therefore, BER is the correct answer as it accurately reflects the given explanation.

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  • 49. 
    What is this? - ProProfs

    What is this?

    • 110 Block

    • 66 PBX

    • 66 Block

    • Key System

    Correct Answer
    A. 66 Block
    Explanation
    A 66 Block is a type of punch-down block used in telecommunications to connect telephone wiring. It consists of rows of terminals where wires are inserted and then punched down to establish connections. This type of block is commonly used in telephone systems to terminate and distribute incoming and outgoing phone lines.

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Quiz Review Timeline (Updated): Jun 12, 2024 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Jun 12, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Oct 24, 2011
    Quiz Created by
    WickidK

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