3c251 CDC Vol 2

A terminal is a device that is used to input and display data. It serves as an interface between the user and the computer system, allowing the user to enter commands or data and receive output or information from the system. Terminals can be text-based or graphical, and they can be standalone devices or software applications running on a computer. They are commonly used in various settings, such as computer labs, offices, and data centers, to interact with computer systems.

The common equipment for the Promina module is the Processor. This module is essential for the functioning and operation of the Promina system. It is responsible for handling and processing data, voice, and trunk connections. Without the Processor module, the Promina system would not be able to perform its intended functions.

The inverter is the component of the Uninterruptible Power Supply (UPS) that takes the Direct Current (DC) voltage input and changes it to Alternating Current (AC) voltage. This is necessary because most electronic devices and appliances operate on AC power, so the inverter ensures that the UPS can provide a consistent and compatible power source during power outages or fluctuations.

A bipolar violation is the result of two successive logic one pulses of the same polarity in violation of alternate mark inversion coding rules. In alternate mark inversion coding, logic one pulses are supposed to alternate in polarity. When two consecutive logic one pulses of the same polarity occur, it results in a bipolar violation. This violation can cause errors in the transmission of data and can lead to signal integrity issues.

The TSEC/KIV-19 is the correct answer because it is a network device that is certified to secure all classification levels and categories. It is also capable of encrypting trunk-level high-speed circuits. The AN/CYZ-10 Data Transfer Device (DTD), Secure Terminal Equipment (STE), and Secure DTD 2000 System (SDS) are not specifically designed for these purposes.

Dynamic routing in the Promina allows for the automatic rerouting of traffic over other trunks if a path to a connected node is down. This feature ensures that network connectivity is maintained even in the event of a failure or outage. It eliminates the need for manual intervention and ensures seamless communication and data transfer.

DISA ensures there are some standards of operation throughout the Promina network through centralized management. This means that DISA has a central authority or control system in place that oversees and manages the network operations. This allows for consistent and standardized practices to be implemented across the network, ensuring that all users and systems adhere to the same set of rules and protocols. Centralized management helps to maintain control, efficiency, and security within the network.

Advancing the oscilloscope synchronizing control too far can lead to distortion in the observed signal. Distortion refers to any alteration or deformation in the shape or quality of the signal waveform. When the synchronizing control is advanced too far, it can cause the oscilloscope to incorrectly synchronize with the signal, resulting in a distorted representation of the waveform on the display. This distortion can make it difficult to accurately analyze and interpret the signal's characteristics, potentially leading to incorrect conclusions or measurements.

Customer complaints are not relied upon as a fault isolation aid because they are subjective and may not always accurately identify the root cause of a problem. While customer complaints can provide valuable feedback, they are not a reliable method for isolating faults or identifying specific technical issues. Instead, operational adjustments, intercommunications, and test facilities are commonly used to diagnose and isolate faults in systems or products.

The power distribution within the systems control facility begins at the main power panel. This panel is responsible for receiving the main power supply and distributing it to various subpanels and circuits within the facility. It acts as the central hub for controlling and managing the power distribution throughout the facility.

The Promina 800 node can accommodate a range of one to four Promina Processor Modules. This means that the user has the flexibility to install anywhere between one to four modules based on their specific requirements.

The transmitter section of a bit error rate test (BERT) set generates a pseudo-random test pattern. This pattern is used to simulate real-world data transmission and assess the performance of the communication system. The transmitter generates a sequence of bits based on a pseudo-random algorithm, which is then sent to the receiver for analysis. By comparing the received data with the transmitted pattern, the system can measure the bit error rate and identify any issues or errors in the transmission.

The correct answer is Average Bit Error Rate (BER) versus Receive Signal Level (RSL). This test is used to determine whether the digital radio and multiplexer are operating optimally by measuring the average bit error rate, which indicates the quality of the received signal, and the receive signal level, which indicates the strength of the received signal. By comparing the BER and RSL, it can be determined if the system is performing at an optimal level or if there are issues that need to be addressed.

The 22-ohm resistor is wired between the tip and ring of the monitor jack in the audio patch panel to allow for signal monitoring. This resistor helps to balance the audio signal and prevent any impedance mismatch between the input and output devices. By providing the right amount of resistance, the 22-ohm resistor ensures that the monitored signal is accurately represented without any distortion or loss of quality.

The correct answer is "Action" because it is the only option that specifies a type of menu. The other options, Prolog Procedure, Functional Area, and Object, do not indicate any specific type of menu. Additionally, the question states that the menu is used only with an operator status of level 3 or higher, which suggests that it is a menu for performing specific actions or tasks.

After adjusting the oscilloscope intensity control to increase the readability of the display, the next control that may need to be adjusted is the focus control. This control allows the user to adjust the sharpness and clarity of the waveform being displayed on the screen. By adjusting the focus control, the user can ensure that the waveform is clear and easy to interpret, improving the overall usability of the oscilloscope.

The term "systems control element" suggests that the question is referring to a centralized control system that monitors power and building conditions. In such a system, alarms are used to alert operators about any issues or abnormalities. The term "station" is the most logical choice among the given options, as it commonly refers to a specific location or facility where monitoring and control activities take place. Therefore, "station" is the correct answer for this question.

The main function of fault alarm and status reporting is to assist you in isolating a failure to a specific location. This means that the fault alarm and status reporting system helps in identifying the exact location where a failure or fault has occurred. By providing information about the status and alarms, it becomes easier to pinpoint the specific area or component that is causing the problem. This helps in troubleshooting and resolving the issue efficiently.

The correct answer is 7 because an on-call patch should not be activated for more than 7 days. This is because keeping a patch activated for too long can increase the risk of potential security vulnerabilities and may also cause system instability. Therefore, it is recommended to regularly update and rotate patches to ensure the security and stability of the system.

A modem is a device that modulates digital data onto an analog carrier for transmission. It converts digital signals from a computer into analog signals that can be transmitted over telephone lines or other communication channels. The modem then demodulates the analog signals back into digital form at the receiving end. This allows digital data to be transmitted over analog communication channels, enabling devices to communicate with each other over long distances.

The Systems Control Facility (SCF) contacts the Regional Network Operations and Security Center for assistance when on-call service cannot be established within the means available to the SCF. This suggests that the Regional Network Operations and Security Center has the necessary resources and capabilities to provide assistance in such situations.

The feature of transparency to users in Promina allows them to be unconcerned with the exact circuit path. This means that users do not need to worry about the specific route their data takes within the network. The Promina system handles the routing and ensures that data is delivered efficiently and reliably, without requiring users to have knowledge of or control over the circuit path. This feature simplifies the user experience and allows them to focus on their tasks without being burdened by network intricacies.

The "Network" command in the Promina Operator Interface displays a matrix depicting the network topology of the nodes connected within the local domain. This command provides a visual representation of how the nodes are interconnected and allows the user to understand the overall network structure. It is a useful tool for troubleshooting and monitoring the network.

The two major sections of a Bit Error Rate Test (BERT) set are the transmitter and receiver. The transmitter is responsible for generating the test signal, which is then transmitted to the receiver. The receiver, on the other hand, is responsible for receiving the test signal and comparing it to the expected signal. By measuring the number of bit errors that occur during transmission, the BERT set can evaluate the performance and quality of the communication channel.

Switchgear is the correct answer because it is a component that is responsible for connecting the generator to the load. It does this by changing the power feed from the commercial source to the generator. Switchgear is designed to handle high voltages and currents, and it includes switches, fuses, and circuit breakers to control and protect the electrical system.

A Promina node can have 64 links. This means that it can connect to 64 other devices or nodes within a network. These links allow for communication and data transfer between the Promina node and other connected devices. Having 64 links provides a significant amount of connectivity and flexibility for the node to interact with various components of a network.

When a 'halo' appears on the display of an oscilloscope, the correct control to adjust is the Intensity. The Intensity control adjusts the brightness of the waveform on the screen. By adjusting the Intensity, the 'halo' can be reduced or eliminated, resulting in a clearer and more accurate display of the waveform.

The correct answer is balanced or unbalanced. Before conducting the timing jitter test, it is important to determine whether the circuit being tested is balanced or unbalanced. This is because the test procedure and interpretation of results may vary depending on the balance or imbalance of the circuit. A balanced circuit has equal impedance on both sides, while an unbalanced circuit has unequal impedance. Understanding the balance or imbalance of the circuit helps in accurately assessing and analyzing the timing jitter.

The Secure Terminal Equipment (STE) is a network device that provides high-speed secure data transfers up to 38.4 kilobits per second (kbps) for asynchronous or 128 kbps for synchronous communication. The AN/CYZ-10 Data Transfer Device (DTD) is not the correct answer because it is a portable electronic device used for transferring data between different security domains. The TSEC/KIV-7HS and TSEC/KIV-19 are also not the correct answers as they are encryption devices used for securing data transmissions, but they do not specifically provide high-speed data transfers like the STE.

To prevent Promina alarms from being overwritten and discarded, you should cancel all alarms that have been resolved. By doing so, you ensure that the resolved alarms are not cleared or overwritten, allowing them to be saved and reviewed for future reference or analysis. This helps in maintaining a comprehensive record of all resolved alarms and prevents important information from being lost or discarded.

The correct answer is Functional Area. In the context of Promina, a functional area refers to a specific section or module within the system that focuses on a particular aspect or task. In this case, the functional area menu would contain commands and options related to configuring the network settings. It would provide the necessary tools and options for managing and customizing the network configuration within the Promina system.

A bit error rate test (BERT) is used to measure the quality of a communication channel by introducing errors and checking how many errors are detected. The duration of the test depends on the desired level of accuracy and the length of the circuit. In this case, since the circuit is specified to be a Z4, 50 kbps circuit, a 15-minute test duration is appropriate to ensure a thorough evaluation of the circuit's performance.

The stress pattern test that causes the pulse generator of the transmission equipment to consume the maximum amount of power is the "All ones" test. In this test, all bits in the T-1 circuit are set to the value of 1, which requires the pulse generator to continuously transmit high voltage signals. This constant transmission of high voltage signals consumes the maximum amount of power from the pulse generator, making it the most power-consuming stress pattern test for T-1 circuits.

The correct answer is electrical because the question is asking about the type of separation that isolates battery circuits from each other. This type of separation refers to the electrical isolation of the circuits, ensuring that they are not connected or affected by each other's electrical signals or power sources.

The X.50 module supports subrate data multiplexing.

To center the trace on the cathode-ray tube (CRT) of an oscilloscope, you would use the horizontal and vertical position controls. These controls allow you to adjust the position of the trace on the screen horizontally and vertically, ensuring that it is centered and aligned properly. The frequency and sweep calibrator, expanded sweep, and sweep calibrator controls are not used for centering the trace on the CRT.

The jumper cables and side switch pins on a breakout box are used to cross-patch individual interface conductors. This means that they allow for the connection of specific interface conductors to each other, enabling the exchange of signals between them. This can be useful for testing and troubleshooting purposes, as it allows for the isolation and manipulation of individual signals within an interface.

When conducting a timing jitter test with an oscilloscope connected to a circuit carrying a signal, the sweep is triggered by the first positive-going transition. This means that the oscilloscope starts measuring and displaying the waveform at the moment when the signal crosses the zero voltage level and starts increasing in a positive direction. This is important because it allows for accurate measurement and analysis of the timing variations or fluctuations in the signal, known as jitter, that may occur after this initial transition.

A client is a device that typically has significant computing and processing capability. It is used to access and interact with a server or host system. Clients can perform tasks such as running applications, processing data, and displaying information. They are usually connected to a network and rely on the server or host for resources and services. Therefore, a client is the correct answer as it fits the description of a terminal with significant computing and processing capability.

CellXpress is the trunk module that interconnects Promina nodes across an Asynchronous Transfer Mode (ATM) network.

The correct answer is "High-speed synchronous data." This type of Promina module supports two independent synchronous circuits at data rates ranging from 9.6 kbps to 2.048 Mbps.

The DS-X patch bay provides a circuit monitoring and testing capability for T-1 circuits.

A Promina trunk and link differ in their nature. A trunk refers to a physical connection involving multiple physical connections between two nodes. On the other hand, a link represents a logical connection that can consist of one or more trunks. Therefore, a link is a logical connection that can include multiple physical connections, while a trunk is a physical connection between two nodes.

The 2:3 height-to-width ratio provides optimum display proportions for general-purpose waveform examinations on an oscilloscope. This ratio ensures that the waveform is displayed with a balanced and visually pleasing aspect ratio, allowing for accurate analysis and interpretation of the waveform. A 2:3 ratio means that the height of the waveform is two-thirds of its width, providing enough vertical resolution to capture the details of the waveform while still maintaining a wide enough display to see the overall shape and characteristics of the waveform.

The correct answer is -18 and -22 dBm0. In commercial data circuits, the signal level typically falls within this range. dBm0 is a unit of measurement used to express power levels in decibels relative to a reference level of 1 milliwatt. The signal level between -18 and -22 dBm0 indicates a moderate power level, which is suitable for transmitting data over commercial data circuits.

The answer is "Digital" because the question asks for the patch bays that can accommodate DB-25 modules wired for the RS-232, RS-530, or V.35 physical standard. The term "Digital" suggests that this type of patch bay is specifically designed to handle digital signals, which includes the RS-232, RS-530, and V.35 standards. Therefore, the Digital patch bay is the correct choice for accommodating these modules.

The switching exchange device is responsible for providing clocking functions to the Promina 800 nodes. It ensures that the nodes are synchronized and operate on the same timing. The switching exchange device acts as a central hub, coordinating the communication between the nodes and managing the timing signals. Without the switching exchange, the nodes would not be able to communicate effectively and efficiently.

At status level 2 of the Promina Operator Interface, the operator has the ability to modify the local node within the local domain. This means that the operator can make changes to the specific node they are working on, but their modifications are limited to the local domain. They do not have the authority to modify all nodes within the local domain or perform network system administration tasks.

The correct answer is "Node." The Node command in the Promina Operator Interface query displays various information including the voice compression available, software version installed, hardware type, and link status. This command provides a comprehensive overview of the node's configuration and status, making it a suitable choice for obtaining the specified information.

The correct answer is a predetermined sequence of logical ones and zeros used for testing and fault isolation. This explanation states that a stress pattern is a predetermined sequence of logical ones and zeros that is used specifically for testing and fault isolation purposes.