1.
What's the primary unit of any information system?
Correct Answer
A. CPU
Explanation
The primary unit of any information system is the CPU (Central Processing Unit). The CPU is responsible for executing instructions, performing calculations, and coordinating the activities of all other hardware components in the system. It acts as the brain of the computer, processing and manipulating data to produce the desired output. Without the CPU, the information system would not be able to perform any tasks or functions.
2.
From what substance are chips made?
Correct Answer
B. Silicon
Explanation
Chips are made from silicon. Silicon is a chemical element that is widely used in the semiconductor industry to create integrated circuits, also known as chips. These chips are the building blocks of modern electronics and are used in various devices such as computers, smartphones, and televisions. Silicon has unique electrical properties that make it an ideal material for creating these tiny electronic components.
3.
What are the links between transistors called?
Correct Answer
B. Circuits
Explanation
Transistors are electronic devices that control the flow of electrical current. They are typically connected together to form circuits, which are pathways for the current to flow through. Therefore, the links between transistors are called circuits. Gateways and nodes are not accurate terms to describe the connections between transistors.
4.
How many signals are used in a computer?
Correct Answer
A. Two
Explanation
In a computer, there are typically two types of signals used - digital signals and analog signals. Digital signals are used to represent data in binary form (0s and 1s) and are used for communication within the computer's components. Analog signals, on the other hand, are used for external communication such as audio and video signals. Therefore, the correct answer is two.
5.
What's the code used by computers called?
Correct Answer
C. Binary
Explanation
Binary is the correct answer because computers use binary code, which consists of only two digits, 0 and 1, to represent and process data. This binary code is the fundamental language that computers understand and use to perform calculations, store information, and execute instructions. It is the building block of all computer programs and systems.
6.
What's another name for a transistor switch?
Correct Answer
C. Gate
Explanation
A transistor switch is commonly referred to as a gate. Transistors are electronic devices that can amplify or switch electronic signals and a transistor switch is specifically designed to control the flow of current in a circuit. The term "gate" is used because, similar to a physical gate, it can either allow or block the flow of current depending on the input signal.
7.
What kind of gate sends on a pulse when it receives one at either or both of its terminals?
Correct Answer
A. OR
Explanation
An OR gate is a logical gate that sends on a pulse when it receives one at either or both of its terminals. This means that if there is a pulse at either terminal or at both terminals, the OR gate will output a pulse. In other words, the OR gate performs a logical OR operation and produces a high output if any of its inputs are high.
8.
What controls the speed of a computer's activities?
Correct Answer
B. Clock
Explanation
The speed of a computer's activities is controlled by the clock. The clock synchronizes the operations of the computer's components, ensuring that they work together in a timely manner. It sets the pace at which instructions are executed and data is processed. A faster clock speed means that the computer can perform more operations per second, resulting in faster overall performance.
9.
What unit decodes commands and synchronizes a device with the data processing system?
Correct Answer
A. Control Unit
Explanation
The control unit is responsible for decoding commands and synchronizing a device with the data processing system. It receives instructions from the memory and coordinates the activities of other hardware components to execute those instructions. It controls the flow of data between the CPU, memory, and input/output devices, ensuring that instructions are executed in the correct sequence and that data is processed accurately.
10.
What component of a computer supervises the entire information system as a whole?
Correct Answer
C. Control Unit
Explanation
The control unit is responsible for supervising the entire information system of a computer. It directs and coordinates the activities of all the other components, ensuring that instructions are executed correctly and data is processed accurately. It manages the flow of data between the memory, the ALU, and the input/output devices. Without the control unit, the computer would not be able to function properly as an information system.
11.
Wher is all the computer calculating, sorting, and comparing of data accomplished?
Correct Answer
B. ALU
Explanation
The ALU (Arithmetic Logic Unit) is responsible for performing calculations, sorting, and comparing data within a computer. It is a fundamental component of the CPU (Central Processing Unit) and is designed to execute arithmetic and logical operations. The ALU carries out tasks such as addition, subtraction, multiplication, division, and logical operations like AND, OR, and NOT. It is where the actual processing of data takes place, making it the correct answer to the question.
12.
What are the storage areas in an ALU called?
Correct Answer
A. Registers
Explanation
Registers are the storage areas in an ALU (Arithmetic Logic Unit). They are small, high-speed memory units within the ALU that store data temporarily during processing. Registers are used to hold operands, intermediate results, and final results of arithmetic and logical operations. They provide quick access to data, allowing the ALU to perform calculations efficiently. Registers play a crucial role in the overall functioning of the ALU by providing temporary storage for data manipulation.
13.
What does a channel do?
Correct Answer
A. Manages the I/O control unit and the units connected to it
Explanation
A channel is responsible for managing the I/O control unit and the units connected to it. It handles the communication between the processor and the various input/output devices. This includes controlling the flow of data and commands between the devices and the control unit, ensuring efficient and proper functioning of the I/O operations. The channel acts as an intermediary, coordinating the transfer of data between the processor and the connected units, effectively managing the I/O processes.
14.
What allows for the overlappoing of operations in a computer system?
Correct Answer
C. Buffering Systems
Explanation
Buffering systems allow for the overlapping of operations in a computer system. A buffering system temporarily stores data that is being transferred between different components of the computer system. This allows for the smooth flow of data and instructions, as one operation can start while another is still being processed. By buffering data, the computer system can effectively handle multiple tasks simultaneously, improving efficiency and performance.
15.
What is the purpose of a buffer system?
Correct Answer
C. To store data until a unit is able to accept it
Explanation
A buffer system is designed to store data until a unit is ready to receive it. This allows for a smooth flow of data between different components or processes that may operate at different speeds or have varying input/output capabilities. By temporarily holding data in a buffer, it ensures that data is not lost or overwritten and can be delivered to the intended recipient when it is ready to receive it.
16.
What's a byte?
Correct Answer
A. Eight bits grouped together to form a character
Explanation
A byte is a unit of digital information that consists of eight bits. It is commonly used to represent a single character in computer systems. Each bit can have a value of either 0 or 1, and when eight bits are combined, they can represent a total of 256 different values, which is sufficient to represent a wide range of characters, symbols, and numbers. Therefore, a byte is defined as eight bits grouped together to form a character.
17.
What happens to a value in primary memory when the processor sends a new value to that storage address?
Correct Answer
B. It's lost
Explanation
When the processor sends a new value to a storage address in primary memory, the previous value stored in that address is overwritten and lost. The new value replaces the old value, and there is no way to retrieve the original data.
18.
What part of the computer can you compare to a great electronic file cabinet?
Correct Answer
A. Random Access Memory
Explanation
Random Access Memory (RAM) can be compared to a great electronic file cabinet because it is a temporary storage location for data that can be accessed quickly and randomly. Just like a file cabinet where you can easily access any file without going through all the other files, RAM allows the computer to quickly retrieve and store data that is currently being used by the processor. It is volatile memory, meaning that its contents are lost when the computer is turned off, just like how files in a file cabinet are accessible only when the cabinet is powered on.
19.
What's the heart of a computer display?
Correct Answer
C. The CRT
Explanation
The correct answer is the CRT. CRT stands for Cathode Ray Tube, which is the technology used in older computer displays. The CRT is responsible for creating the images on the screen by using an electron beam that scans across the phosphor-coated glass. This technology was widely used before the advent of LCD and LED displays.
20.
What does display resolution mean?
Correct Answer
C. The number of pixels that make up the image
Explanation
Display resolution refers to the number of pixels that make up an image. It determines the level of detail and clarity in the displayed content. A higher display resolution means more pixels are used, resulting in a sharper and more detailed image. The resolution is typically expressed as the number of pixels in width and height, such as 1920x1080 for Full HD resolution.
21.
What's the resolution of a VGA monitor?
Correct Answer
B. 640 X 480
Explanation
The resolution of a VGA monitor is 640 X 480. VGA stands for Video Graphics Array, which was a popular video display standard introduced by IBM in 1987. This resolution refers to the number of pixels displayed horizontally and vertically on the screen. In this case, there are 640 pixels in width and 480 pixels in height, resulting in a 4:3 aspect ratio. This resolution was commonly used for older CRT monitors and is considered low by today's standards.
22.
To what operations are the four central ACUs dedicated?
Correct Answer
B. Controls and Displays, Navigation, Weapons Delivery, Critical Data
Explanation
The four central ACUs are dedicated to Controls and Displays, Navigation, Weapons Delivery, and Critical Data. This means that these ACUs are responsible for managing and controlling various aspects of the aircraft's operation. Controls and Displays allow for the manipulation and monitoring of different systems and functions. Navigation ensures accurate positioning and guidance. Weapons Delivery handles the deployment of weapons. Critical Data involves the collection and processing of important information for safe and efficient operation.
23.
What are the functions of the two non-central ACUs?
Correct Answer
A. Terrain Following, Radar Control
Explanation
The two non-central ACUs have the functions of Terrain Following and Radar Control. Terrain Following allows the aircraft to maintain a specific altitude above the ground, even when flying over uneven terrain. This is crucial for low-level flying and avoiding obstacles. Radar Control, on the other hand, involves the use of radar systems to detect and track other aircraft, providing crucial information for air traffic control and ensuring safe navigation.
24.
From what source(s) are the ACU memories loaded?
Correct Answer
C. Both
Explanation
The ACU memories are loaded from both the DTS and the MSD. This means that the memories can be accessed and retrieved from either of these sources. It implies that the ACU memories are stored in both the DTS and the MSD, allowing for flexibility and redundancy in accessing and loading the memories.
25.
Which ACU function monitors and controls the navigation functions?
Correct Answer
B. General Navigation
Explanation
General Navigation is the ACU function that monitors and controls the navigation functions. This function is responsible for tracking the aircraft's position, altitude, heading, and speed. It uses various sensors and systems to gather data and make adjustments to ensure accurate navigation. By monitoring and controlling the navigation functions, General Navigation helps the aircraft stay on course, avoid obstacles, and reach its destination safely.
26.
Which ACU function provides the integration link between offensive and defensive tasks?
Correct Answer
A. Controls and Displays
Explanation
Controls and Displays provide the integration link between offensive and defensive tasks. This function allows the user to have control over offensive and defensive systems by providing them with the necessary information and displays. It enables the coordination and management of offensive and defensive tasks, ensuring seamless integration and effective execution of operations.
27.
Which ACU function provides radar status and altitude to the ACUC?
Correct Answer
C. Terrain Following
Explanation
Terrain Following is the ACU function that provides radar status and altitude to the ACUC. This function allows the ACUC to receive information about the radar's status and the altitude of the aircraft. It is important for the ACUC to have this information in order to effectively navigate and control the aircraft, especially when flying at low altitudes and in challenging terrain conditions.
28.
What's the function of the RDTs?
Correct Answer
C. To provide the primary interface between the digital avionics systems and the analog flight control and flight director systems
Explanation
The function of the RDTs is to provide the primary interface between the digital avionics systems and the analog flight control and flight director systems. This means that the RDTs are responsible for facilitating communication and data exchange between the digital avionics systems, which are based on digital technology, and the analog flight control and flight director systems, which are based on analog technology. This interface is crucial for ensuring the proper functioning and coordination of these systems, allowing for effective control and guidance of the aircraft.
29.
How many channels are in the DEU?
Correct Answer
B. Two
Explanation
The correct answer is "Two" because the question asks about the number of channels in the DEU. Since the answer options provided are "One," "Two," and "Three," we can determine that the DEU has two channels.
30.
Where does the DEU receive VIDEO and SYNC from and to where do they go?
Correct Answer
C. Radar video signal processor; OSO and DSO MFDs and the video recorder
Explanation
The DEU (Display Electronics Unit) receives video and sync signals from the radar video signal processor. These signals are then sent to the OSO (Outboard Station Operator) and DSO (Downstream Operator) Multi-Function Displays (MFDs) for display purposes. Additionally, the DEU also sends these signals to the video recorder for recording purposes.
31.
What multiplexing bus(es) does the DEU interface with?
Correct Answer
B. CMUX
Explanation
The DEU interface with the CMUX multiplexing bus.
32.
What function is provided by the IKB DIS SEL R/BOT keys?
Correct Answer
A. Selects the right or bottom MFD for display and keyboard
Explanation
The IKB DIS SEL R/BOT keys provide the function of selecting the right or bottom Multi-Function Display (MFD) for display and keyboard input. These keys allow the user to choose which MFD to use for viewing information and inputting commands.
33.
What unique feature does the IKB and DEU have together?
Correct Answer
B. The ability to back up other control panels
Explanation
The IKB and DEU have the unique feature of being able to back up other control panels. This means that they can serve as a backup or secondary system for other control panels, providing redundancy and ensuring continuity of operations in case of failure or power loss in the primary control panels. This feature enhances the reliability and resilience of the overall control system.
34.
From where do the MFDs receive VIDEO and SYNC signals?
Correct Answer
C. DEU
Explanation
The MFDs receive VIDEO and SYNC signals from the DEU.
35.
What controls the data presented on the MFDs?
Correct Answer
B. IKB
Explanation
The correct answer is IKB. IKB stands for Integrated Keyboard. It is a control system that allows the user to input commands and control the data presented on the Multi-Function Displays (MFDs). The IKB enables the user to navigate through different screens, select options, and manipulate the data displayed on the MFDs. It plays a crucial role in operating and accessing the information on the MFDs.
36.
What happens when you press one of the ACU/PWR ON switchlights on the NAV/AUX control when no switchlights are on?
Correct Answer
B. The four central ACUs and the core avionics LRUs are powered on
Explanation
When you press one of the ACU/PWR ON switchlights on the NAV/AUX control when no switchlights are on, the result is that the four central ACUs (Air Conditioning Units) and the core avionics LRUs (Line Replaceable Units) are powered on. This means that the air conditioning system and the essential avionics components are activated, allowing for proper functioning of the aircraft's systems.
37.
Whats the purpose of the DCO indicator on the NAV/AUX control?
Correct Answer
B. Indicates when the DVS is operating in velocity memory mode
Explanation
The purpose of the DCO indicator on the NAV/AUX control is to indicate when the DVS (Doppler Velocity Sensor) is operating in velocity memory mode. This mode allows the DVS to store and recall previous velocity information, which can be useful for navigation purposes. The indicator helps the operator know whether the DVS is currently in this mode or not.
38.
The LAND/SEA switchlight on the NAV/AUX control affects what radar system?
Correct Answer
C. DVS
Explanation
The correct answer is DVS. The LAND/SEA switchlight on the NAV/AUX control affects the DVS radar system.
39.
Pressing RDR on the BOMB/NAV control causes what type of navigational update?
Correct Answer
C. Update with crosshair position reference
Explanation
Pressing RDR on the BOMB/NAV control causes an update with crosshair position reference. This means that the navigation system will be updated with the current position of the crosshair, which is a reference point on the display. This allows for more accurate navigation and tracking of the aircraft's position.
40.
MPW updates what navigate mode?
Correct Answer
A. DR
Explanation
MPW updates the Dead Reckoning (DR) navigate mode.
41.
Pressin OVFLY on the BOMB/NAV control causes what type of navigational update?
Correct Answer
B. Update without crosshair position reference
Explanation
Pressing OVFLY on the BOMB/NAV control causes an update without crosshair position reference. This means that when OVFLY is pressed, the navigational update will not include the current position of the crosshair.
42.
What principle do the JTIDS/MIDS terminals operate on?
Correct Answer
C. TDMA
Explanation
The JTIDS/MIDS terminals operate on the principle of TDMA, which stands for Time Division Multiple Access. This means that the terminals divide the available time into time slots, and each terminal is assigned a specific time slot to transmit its data. This allows multiple terminals to share the same frequency channel without interfering with each other. TDMA is a commonly used technique in telecommunications to maximize the efficiency of communication systems.
43.
What is contention access?
Correct Answer
B. Assignment of specific time slots to multiple users
Explanation
Contention access refers to the process of assigning specific time slots to multiple users in order to access a shared medium or network. This method ensures that each user is allocated a specific time interval during which they can transmit or receive data without interference from other users. By assigning time slots, contention access helps in managing and organizing the access to the network, allowing multiple users to share the medium efficiently and avoid collisions or conflicts.
44.
What is a JU?
Correct Answer
A. Octal or alphanumeric number identifying units and determining a preassigned set of time slots that designate when the unit transmits and receives data
Explanation
The correct answer is "Octal or alphanumeric number identifying units and determining a preassigned set of time slots that designate when the unit transmits and receives data." This answer accurately describes a JU as a number that identifies units and determines time slots for data transmission and reception. The use of "octal or alphanumeric" indicates that the JU can be represented in either numeric or alphanumeric format.
45.
What does net number 127 indicate?
Correct Answer
B. Stacked net
Explanation
The net number 127 indicates a stacked net. Stacked nets are used in electronic circuits to connect multiple layers of a circuit board. They allow for the efficient routing of signals between different layers, reducing the complexity of the circuit layout. Stacked nets are commonly used in multi-layer PCB designs to optimize space and improve signal integrity.
46.
When is voice clarity enhanced on secure voice channels?
Correct Answer
A. When using 16kbps secure voice
Explanation
Voice clarity is enhanced when using 16kbps secure voice because the higher the bitrate, the better the audio quality. With a higher bitrate, more data can be transmitted per second, resulting in clearer and more detailed sound. Therefore, using 16kbps secure voice allows for improved voice clarity on secure voice channels compared to using 8kbps or 32kbps.
47.
How many units (max) may participate in a TADIL J system?
Correct Answer
C. 32,766
Explanation
A TADIL J system can accommodate a maximum of 32,766 units.
48.
How is the RELNAV function started by Link 16 participants?
Correct Answer
C. It's automatically started
Explanation
The RELNAV function is automatically started by Link 16 participants. This means that the function is initiated without any manual intervention or selection of options. The system is designed to automatically start the RELNAV function when necessary, without requiring any specific action from the participants.
49.
What signal processing does the RT process for JTIDS TDMA?
Correct Answer
C. RF and IF
Explanation
The RT (Radio Terminal) processes both RF (Radio Frequency) and IF (Intermediate Frequency) signals for JTIDS (Joint Tactical Information Distribution System) TDMA (Time Division Multiple Access). RF refers to the electromagnetic signals used for wireless communication, while IF refers to the frequency range after the initial RF processing and before the final baseband processing. Therefore, the RT processes both RF and IF signals in order to facilitate the TDMA communication in the JTIDS system.
50.
On the RT, what does ETI display?
Correct Answer
B. Total time power has been applied to the RT
Explanation
The ETI on the RT displays the total time that power has been applied to the RT. It is a measure of the cumulative amount of time that the RT has been powered on. This information is useful for tracking the usage and lifespan of the RT, as well as for scheduling maintenance and inspections.