3D152 Ure Volume 1

The grounding resistance goal for military communication electronics (C-E) facilities is 10 ohms or less. This means that the resistance between the ground and the facility should be 10 ohms or lower. A lower grounding resistance helps to ensure the safety and proper functioning of the electronics by providing a stable reference point for electrical currents.

The upper section of a horizontal cable duct is used for signal and control cables. This section is typically designed to accommodate these types of cables and provide proper routing and protection for them. The lower section of the cable duct is usually reserved for power cables, while the right and left sections may be used for other purposes or remain unused.

Fiber optic cables are designed to withstand high temperatures, and the maximum operating temperature is an important specification. The correct answer is 1,000'C, which means that the fiber optic cable can operate safely in temperatures up to 1,000 degrees Celsius. This high temperature tolerance is crucial for applications where the cable may be exposed to extreme heat, such as industrial settings or in close proximity to heat sources. It ensures the reliability and durability of the cable, preventing damage or degradation of the optical signal transmission.

The use of TEMPEST-certified equipment must be validated by an AF Certified TEMPEST Technical Authority (CTTA) prior to testing an inspectable space because it is expensive. This suggests that there are costs associated with the validation process, which may include the expertise and resources required to conduct the validation. By requiring validation, the authorities ensure that the equipment meets the necessary standards and can effectively protect against electromagnetic emissions that could potentially be intercepted by unauthorized individuals.

The correct answer is "binder." A binder is a stationary item used to hold and organize loose papers or documents. The description in the question matches the function of a binder, as it mentions a thin plastic colored tape spiraling around a specific number of pairs that replicate in color. This tape is commonly found on the spine of a binder, helping to secure and identify the contents inside. Therefore, a binder is the most suitable option among the given choices.

An enclave that does not have a firewall and intrusion detection system (IDS) is classified as having a vulnerability in Category I. This means that the enclave lacks the necessary security measures to protect against unauthorized access and potential attacks. Without a firewall, the enclave is more susceptible to network-based threats, while the absence of an IDS leaves it vulnerable to detecting and responding to intrusion attempts. Overall, Category I vulnerabilities pose a significant risk to the security and integrity of the enclave's systems and data.

The equipment that should be designated as RED is the equipment processing clear-text classified information. This is because RED is used to classify information that is deemed highly sensitive and requires the highest level of security. Clear-text refers to information that is not encrypted or encoded, and classified information refers to information that has been classified and labeled with a specific level of sensitivity. Therefore, the equipment processing clear-text classified information would require the highest level of security measures to ensure the protection of the sensitive information.

Crossover cables are used to connect devices that operate at similar layers of the OSI model. These cables are specifically designed to allow direct communication between two devices of the same type, such as two computers or two switches, without the need for an intermediary device like a hub or a router. Crossover cables have their transmit and receive wires crossed over, enabling the devices to transmit and receive data correctly. This allows for efficient and direct communication between devices operating at the same layer of the OSI model.

Zoning is the method of containing radiated emanations that requires both facility and equipment testing. This involves dividing the facility into different zones based on their levels of sensitivity to radiated emanations. Each zone is then tested to ensure that the appropriate level of protection is in place. This method ensures that sensitive equipment or areas are adequately shielded from radiated emanations, minimizing the risk of interference or unauthorized access to information. Shielding, suppression, and profile matching are other methods of containing radiated emanations, but they do not necessarily require facility and equipment testing.

A scribe is used to remove excess fiber after the connector has cooled and epoxy has dried on a fiber cable. A scribe is a tool with a sharp pointed tip that is used to score or scratch the fiber, making it easier to break off the excess fiber. This helps to ensure a clean and smooth connection between the fiber cable and the connector. Strippers are used to remove the outer protective coating of the fiber cable, alco wipes are used for cleaning, and a polishing cloth is used for polishing the connector, but none of these tools are specifically designed for removing excess fiber.

The correct answer is Two. This means that the Air Force has two Integrated Network and Operation Security Centers (INOSCs). These centers are responsible for ensuring the security and operation of the Air Force's integrated network systems. Having two INOSCs suggests that the Air Force has implemented redundancy and distributed its security operations across multiple locations, which can help enhance the overall security and resilience of its network infrastructure.

Host-based intrusion detection systems (HIDS) are capable of both passive and active detection. Passive detection involves monitoring and analyzing system logs, network traffic, and other data to identify potential intrusions. Active detection, on the other hand, involves actively scanning the system for signs of unauthorized activity or vulnerabilities. HIDS can perform both these functions, making them versatile and effective in detecting and preventing intrusions on a host system.

During normal operating conditions with commercial AC power available, facility batteries act as a DC filter for the commercial AC power. This means that they remove any unwanted noise or fluctuations from the AC power supply, ensuring a stable and clean DC power output for the system. By acting as a filter, the facility batteries help to maintain the quality and reliability of the power supply, protecting the system from any potential disruptions or damages caused by AC power fluctuations.

Technical Security is not a communications security program duty and responsibility for Cyber Transport Systems. While Transmission Security, Emission Security, and Physical Security are all important aspects of ensuring secure communication, Technical Security refers to the protection of computer systems and networks from unauthorized access, attacks, and vulnerabilities. It involves implementing measures such as firewalls, encryption, access controls, and regular system updates to safeguard against cyber threats. However, Technical Security is not specifically related to communications security within Cyber Transport Systems.

A digital storage oscilloscope (DSO) typically uses real-time sampling on single-shot or seldom-occurring signals. Real-time sampling allows the DSO to capture and display the signal waveform accurately by continuously sampling the input at a high rate. This ensures that no important details or events are missed, even if they occur infrequently or unpredictably. Sequential sampling, on the other hand, would not be suitable for capturing these types of signals as it involves sampling at regular intervals, potentially missing important information between samples. Repetitive and random sampling are also not commonly used for single-shot or seldom-occurring signals in DSOs.

When using an optical time-domain reflectometer (OTDR), connecting a launch cable between the test set and the cable being tested is necessary to prevent false readings. This is because the launch cable helps to eliminate any uncertainties or reflections that may occur at the beginning of the cable under test. By using a launch cable, the OTDR can accurately measure and analyze the characteristics of the cable without any interference or false reflections caused by the connection point.

The purpose of the miniature ON/OFF switches on a breakout box is to allow the interruption of the individual interface conductors for isolated testing. These switches provide a convenient way to temporarily disconnect specific interface signals, allowing for isolated testing of those signals without affecting the rest of the system. This can be useful for troubleshooting or debugging purposes, as it allows for pinpointing the source of a problem by selectively interrupting different interface conductors.

Industrial and commercial applications typically require three phases of generator power. This is because three-phase power offers a more balanced and efficient distribution of electrical power compared to single or double phases. Three-phase power allows for higher power transmission and is commonly used in industries and commercial settings to operate heavy machinery and equipment.

The correct answer is "Default allow." This security posture allows everything unless it is specifically denied. In other words, there are no restrictions or limitations in place by default, and all actions or requests are permitted unless explicitly blocked or denied. This can potentially pose a higher security risk as it allows for greater access and potential vulnerabilities if not properly managed and monitored.

IP telephony is the correct answer because it accurately describes the technology for transmitting voice communications over a data network using open-standard-based internet protocol (IP). IP telephony refers to the use of IP networks, such as the internet, to transmit voice calls, allowing for more efficient and cost-effective communication compared to traditional telephony systems. It utilizes the internet protocol (IP) to convert voice signals into digital packets that can be transmitted over the network.

Distance and angle play a major role in a conductor's ability to minimize compromising emanations. By increasing the distance between the conductor and potential sources of interference, the chances of electromagnetic radiation or interference decreases. Additionally, the angle at which the conductor is positioned can also affect the amount of emanations that are produced. By positioning the conductor at an angle that minimizes the exposure to potential sources of interference, the conductor's ability to minimize compromising emanations is enhanced.

Fiber-optic epoxies typically take 12-24 hours to set. This is the amount of time required for the epoxy to fully cure and harden, ensuring a strong bond between the fiber-optic components. Waiting for the epoxy to set is crucial to ensure the reliability and durability of the fiber-optic connection.

AFSSI 7700 provides the overall implementation of DOD's TEMPEST program. TEMPEST is a program that ensures the security of electronic information by preventing unauthorized access to compromising emanations from electronic equipment. AFSSI 7700 specifically focuses on the implementation of TEMPEST within the Air Force Systems Security Program.

Signal reference bonds are typically applied using mechanical bonding. This involves physically connecting the signal reference points using screws, clamps, or other mechanical fasteners. This method ensures a secure and reliable connection between the bonded components, allowing for effective signal transmission and minimizing any potential interference or noise. Brazing and welding, on the other hand, involve using heat to melt and fuse materials together, which may not be suitable for delicate signal reference bonds.

The correct answer is Protocol Statistics. This option provides information about the network utilization and frame errors specifically related to a particular protocol. It allows users to analyze and monitor the performance of the protocol in terms of its usage and any errors encountered. This feature is useful for troubleshooting and optimizing network protocols.

The correct answer is Media access control (MAC) node statistics. A protocol analyzer is used to capture and analyze network traffic. The MAC node statistics window in the protocol analyzer displays information about the MAC layer, which is responsible for controlling access to the physical medium. This window reports errors that occur at the physical layer, such as bad frame check sequence (FCS), short frames, and jabbers. By monitoring these statistics, network administrators can identify and troubleshoot issues related to the physical layer of the network.

Network-based intrusion detection systems (NIDS) are designed to monitor and analyze network traffic for any signs of unauthorized or malicious activity. They operate in a passive manner by observing the network traffic and analyzing it for potential threats. NIDS do not actively intervene or take action to prevent or stop intrusions; instead, they generate alerts or notifications for further investigation and response by security personnel. Therefore, the correct answer is "passive only."

The correct answer is TO 31-10 series. This series covers standard Air Force installation practices.

The correct answer is 1 milliohm. In the earth electrode subsystem, bonds are typically direct and permanent. These bonds are crucial for ensuring a low resistance path for electrical current to flow into the earth. A resistance of 1 milliohm or lower is desired for effective grounding and to minimize the risk of electrical hazards. Higher resistance values can lead to poor grounding and potential safety issues.

The correct answer is the first label is placed within 12 inches of the connector and marked "TO", and the second is placed within one (2) inch of the first label and marked "FROM". This means that the first label indicating the direction of the cable is placed within a maximum distance of 12 inches from the connector, and the second label indicating the origin of the cable is placed within a maximum distance of 2 inches from the first label.

The support intervals for cable requiring surface installation will not exceed 5 feet. This means that the cable must be supported at intervals of 5 feet or less along its length when installed on the surface. This is important to ensure the cable is properly supported and protected from damage.

Coaxial cable does not radiate energy because it has a shielding layer that prevents the leakage of electromagnetic signals. This shielding layer consists of a conductive material that surrounds the inner conductor, creating a balanced electrical field within the cable. This design ensures that the energy transmitted through the cable is contained within the cable itself, minimizing interference with other devices and reducing signal loss.

Host-based intrusion detection systems (IDS) use software sensors to monitor and analyze activity on a specific host or endpoint. These sensors are installed on individual systems and collect data regarding system logs, file integrity, user activity, and network connections. By analyzing this data, host-based IDS can detect and alert on suspicious or malicious activity occurring on the host. This makes them effective in detecting attacks that may evade network-based IDS, as they focus on the activity within a specific host rather than monitoring network traffic.

A facility with an inspectable space of more than 20 meters, but less than 100 meters would be considered to be in facility zone. This means that the facility falls within a specific area or zone that is designated for inspection purposes.

The jumper cables and side switch pins on a breakout box allow for the cross-patching of individual interface conductors. This means that they enable the connection or re-routing of specific conductors within an interface, allowing for flexibility in signal routing and connectivity.

The facility ground subsystem that is also called the "signal ground" is the signal reference. This subsystem is responsible for controlling electrical noise and static in a facility. It ensures that all signals have a common reference point and helps to maintain signal integrity by minimizing interference and noise. Earth electrode, fault protection, and lightning protection are not specifically related to controlling electrical noise and static in a facility, making them incorrect answers.

The size of a test pattern segment transmitted from a bit error rate test (BERT) is determined by the number of bits that can represent the total number of bits in the test pattern. This means that the size of the segment is determined by the number of bits needed to accurately represent the entire test pattern. The other options mentioned in the question, such as the total amount of bandwidth or the number of bytes, do not directly determine the size of the test pattern segment.

Multimode step index fiber is the easiest to splice because it has a larger core and a uniform refractive index profile, which allows for easier alignment and fusion of the fibers during the splicing process. In contrast, multimode graded-index fiber has a varying refractive index profile that makes alignment more challenging. Single mode fiber has a smaller core, requiring more precise alignment and fusion. Coaxial cable, on the other hand, is not typically spliced but rather connected using connectors or adapters.

A breakout box is a device that allows for easy monitoring and access to multiple conductors. It is typically used in electrical and electronic testing and troubleshooting. By connecting the breakout box to a cable or circuit, technicians can easily access and monitor the individual conductors within the cable. This helps in identifying any issues or faults with specific conductors, making it easier to diagnose and fix problems. The other options provided in the question, such as providing wiring maps or measuring electrical parameters, do not accurately describe the purpose of a breakout box.

A packet filter gateway operates at the third layer of the OSI model, which is the network layer. This layer is responsible for routing packets across different networks and ensuring they reach their intended destination. The packet filter gateway examines the headers of incoming and outgoing packets and makes decisions based on predefined rules, such as allowing or blocking certain types of traffic. By operating at the network layer, the packet filter gateway can effectively filter and control network traffic.

In a digital storage oscilloscope, sampled data points are stored as waveform points. These waveform points represent the amplitude of the signal at specific time intervals. The oscilloscope captures the signal and converts it into a digital format, storing the data as a series of waveform points. This allows for the visualization and analysis of the signal on the oscilloscope's display.

When the protocol analyzer application is activated, the protocol analyzer test window that automatically runs in the background is the node discovery. This feature allows the protocol analyzer to scan the network and identify all the nodes present. It helps in detecting and mapping the network topology, providing information about the devices connected, their IP addresses, and other relevant details. This feature is essential for network administrators to understand the structure and layout of the network.

The correct answer is Lightning protection. Surge arrestors are used in the lightning protection subsystem to protect the facility from power surges caused by lightning strikes. These surge arrestors are designed to divert the excess electrical energy from the lightning strike away from the facility, preventing damage to the equipment and ensuring the safety of the facility and its occupants.

A network-based intrusion detection system (IDS) monitors packets for protocol anomalies and known virus signatures. This means that it analyzes network traffic to detect any abnormal behavior or patterns that may indicate a potential intrusion or attack. It also compares the packets against a database of known virus signatures to identify any malicious activity. This type of IDS operates at the network level, allowing it to monitor all traffic passing through a network and provide a comprehensive view of the network's security posture.

The CURSORS control button is the correct answer because it is the button that controls all the waveforms displayed in the STORE mode of a digital storage oscilloscope. The CURSORS control allows the user to select specific points on the waveform and measure various parameters such as voltage, time, and frequency. By using the CURSORS control, the user can analyze and manipulate the waveforms in the STORE mode.

The standard operating mode for the acquisition mode on a digital storage oscilloscope is sample mode. In this mode, the oscilloscope takes a series of samples of the input signal at regular intervals and stores them in memory. These samples are then used to reconstruct the waveform on the display. Sample mode is useful for capturing and analyzing single-shot events or signals with fast-changing characteristics.

Electrical separation ensures that every signal conductor from a RED device either routes to another RED device or becomes encrypted before connecting to a BLACK device. This type of separation involves using electrical means, such as filters or transformers, to isolate and protect the signals from unauthorized access or interference. It helps to prevent the leakage of sensitive information and ensures the integrity and confidentiality of the data being transmitted.

A circuit layer gateway operates at the fourth layer of the OSI model, which is the transport layer. This layer is responsible for establishing and managing end-to-end connections between hosts, ensuring reliable and efficient data transfer. Circuit layer gateways specifically handle the establishment and maintenance of virtual circuits, which are logical connections between two endpoints. By operating at this layer, circuit layer gateways can provide additional security and control over the flow of data between networks.

The facility ground subsystem that is also referred to as the safety ground is fault protection. Fault protection is responsible for detecting and mitigating any faults or abnormalities in the electrical system to ensure the safety of the facility. This subsystem includes protective devices such as circuit breakers and ground fault interrupters that quickly disconnect the power in the event of a fault, preventing potential electrical hazards and ensuring the safety of the users and equipment.

Equipment with an equipment radiation TEMPEST zone (ERTZ) of 20 to 100 meters would be considered to be in the equipment zone. This means that the equipment is located within a specific area where the electromagnetic radiation it emits can potentially be intercepted and exploited by attackers. The equipment zone is a designated area where extra security measures are implemented to protect against TEMPEST attacks.