3DX5X Cyber Support Journeyman Volume 2. Information Technology Concepts

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  • 1/126 Questions

    (215) What are two anti-virus programs that the Air Force uses?

    • A. Norton and Horton.
    • B. Horton and McAfee.
    • C. Norton and McAfee.
    • D. McAfee and Lotus Pro.
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3DX5X Quizzes & Trivia
About This Quiz

This quiz assesses knowledge in Information Technology, focusing on the OSI model, network devices, and data handling techniques. It is designed for learners aiming to enhance their understanding of network layers, protocols, and standards, crucial for IT professionals.

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  • 2. 

    (223) What concerns slowed the military’s adoption of wireless network technology?

    • A. Speed and reliability.

    • B. Security and reliability.

    • C. Reliability and maintenance.

    • D. Certification and interoperability.

    Correct Answer
    A. B. Security and reliability.
    Explanation
    The military's adoption of wireless network technology was slowed due to concerns regarding both security and reliability. Security was a major concern as wireless networks are more susceptible to hacking and unauthorized access compared to wired networks. The military needed to ensure that their wireless networks were secure enough to protect sensitive information and prevent any potential cyber attacks. Additionally, reliability was also a concern as wireless networks can be affected by interference, signal loss, and other technical issues. The military needed to ensure that their wireless networks were reliable enough to support critical operations without any disruptions.

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  • 3. 

    (207) The ability to move about without being tethered by wires in wireless technology is called

    • A. mobility.

    • B. ease of installations.

    • C. war driving.

    • D. motion capture technology.

    Correct Answer
    A. A. mobility.
    Explanation
    The correct answer is a. mobility. In wireless technology, the ability to move about freely without being restricted by wires is referred to as mobility. This allows users to access and use wireless devices and services from different locations, providing convenience and flexibility. Ease of installations (b) refers to the simplicity and efficiency of setting up wireless systems. War driving (c) is the act of searching for and exploiting wireless networks, often for malicious purposes. Motion capture technology (d) involves capturing and recording the movements of objects or individuals for various applications, such as animation or sports analysis.

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  • 4. 

    (217) What was the first disk operating system developed to operate on a wide range of computer systems?

    • A. C-Plus.

    • B. UNIX.

    • C. Fortran.

    • D. Windows.

    Correct Answer
    A. B. UNIX.
    Explanation
    UNIX was the first disk operating system developed to operate on a wide range of computer systems. It was created in the 1960s and was designed to be portable and flexible, allowing it to be used on different hardware platforms. UNIX became widely adopted in the academic and research communities and eventually influenced the development of other operating systems, including Linux and macOS.

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  • 5. 

    (201) What Open System Interconnect layer is closest to the end user?

    • A. Application.

    • B. Session.

    • C. Presentation.

    • D. Transport.

    Correct Answer
    A. A. Application.
    Explanation
    The Open System Interconnect (OSI) model is a conceptual framework that standardizes the functions of a communication system into seven different layers. The layer closest to the end user is the Application layer. This layer provides services directly to the user, such as email, web browsing, and file transfer. It interacts with software applications and enables communication between the user and the network. The Application layer is responsible for identifying and establishing the availability of communication partners, as well as synchronizing and encrypting data for transmission.

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  • 6. 

    (202) What topology defines the way in which devices communicate, and data is transmitted, throughout the network?

    • A. Physical.

    • B. Logical.

    • C. Star.

    • D. Hybrid.

    Correct Answer
    A. B. Logical.
    Explanation
    The correct answer is b. Logical. Logical topology refers to the way in which devices communicate and data is transmitted in a network. It focuses on the logical connections and pathways between devices, rather than the physical layout. This includes concepts such as bus, ring, and mesh topologies.

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  • 7. 

    (207) Which landline transmission medium is the primary carrier of voice communications?

    • A. Twisted pair cable.

    • B. Fiber optic cable.

    • C. Coaxial cable.

    • D. Twinax cable.

    Correct Answer
    A. A. Twisted pair cable.
    Explanation
    Twisted pair cable is the primary carrier of voice communications because it is a widely used and cost-effective transmission medium. It consists of two insulated copper wires twisted together, which helps to reduce electromagnetic interference and crosstalk. Twisted pair cable is capable of transmitting analog signals, making it suitable for carrying voice signals. It is commonly used in telephone systems and is able to support voice communication over long distances without significant loss of quality.

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  • 8. 

    (207) Who is an authorized client that may unknowingly or maliciously help outside parties gain access to a network?

    • A. Auditor.

    • B. Employee.

    • C. War Driver.

    • D. Hacker.

    Correct Answer
    A. B. Employee.
    Explanation
    An employee is an authorized client who may unknowingly or maliciously help outside parties gain access to a network. Employees have legitimate access to the network and can be manipulated or exploited by external parties to gain unauthorized access. They may unknowingly share sensitive information, fall victim to social engineering attacks, or intentionally breach security protocols. Therefore, it is crucial for organizations to implement robust security measures and educate their employees about the potential risks and best practices to prevent unauthorized access.

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  • 9. 

    (211) What is the method called when the entire frame is received and placed into the buffer, an error check is performed, and the frame is sent to the proper port for delivery?

    • A. Store-and-forward.

    • B. Cross-over.

    • C. Fragment-free.

    • D. Adaptive.

    Correct Answer
    A. A. Store-and-forward.
    Explanation
    Store-and-forward is the method where the entire frame is received and placed into the buffer. An error check is then performed to ensure the integrity of the frame. Finally, the frame is sent to the proper port for delivery. This method ensures that the entire frame is received before it is forwarded, minimizing the chances of errors or data loss during transmission.

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  • 10. 

    (215) The path between the operating system and virtually all hardware not on the computer’s motherboard goes through a special program called a

    • A. director.

    • B. deliver.

    • C. driver.

    • D. sender.

    Correct Answer
    A. C. driver.
    Explanation
    The correct answer is c. driver. The explanation for this answer is that a driver is a special program that acts as a bridge between the operating system and hardware devices that are not on the computer's motherboard. It allows the operating system to communicate and control these external hardware devices effectively.

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  • 11. 

    (204) What type of network makes use of tunneling and security protocols to enables a group of two or more computer systems to communicate over the public Internet?

    • A. Local Area Network.

    • B. Wide Area Network.

    • C. Virtual Private Network.

    • D. Metropolitan Area Network.

    Correct Answer
    A. C. Virtual Private Network.
    Explanation
    A Virtual Private Network (VPN) makes use of tunneling and security protocols to enable a group of two or more computer systems to communicate over the public Internet. VPNs create a secure and encrypted connection between the computers, allowing them to send and receive data privately and securely. This is especially useful for remote workers or businesses that need to connect to their network from outside locations, as it ensures that their communication is protected from potential threats on the public Internet.

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  • 12. 

    (205) Using a range of 1–126 in the first octet of an IPv4 address, what class does it belong to?

    • A. Class A.

    • B. Class B.

    • C. Class C.

    • D. Class D.

    Correct Answer
    A. A. Class A.
    Explanation
    The range of 1-126 in the first octet of an IPv4 address belongs to Class A. Class A addresses have the first bit set to 0, indicating that the address belongs to the network address space. The remaining 7 bits in the first octet are used to represent the network ID, allowing for a large number of networks. The range 1-126 falls within this class, making it the correct answer.

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  • 13. 

    (207) What is the type of memory that retains data after power is removed or lost?

    • A. Volatile.

    • B. Nonvolatile.

    • C. Secured.

    • D. Unsecured.

    Correct Answer
    A. B. Nonvolatile.
    Explanation
    Nonvolatile memory is the type of memory that retains data even after power is removed or lost. Unlike volatile memory, which requires a constant power supply to retain data, nonvolatile memory can store information even when power is not available. This type of memory is commonly used in devices such as solid-state drives (SSDs), USB flash drives, and memory cards, where data needs to be preserved even when the device is turned off.

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  • 14. 

    (207) Which of the following is not one the four security threats to Wireless Local Area Network?

    • A. Rogue Access Points.

    • B. Direct Connections.

    • C. War Drivers.

    • D. Hackers.

    Correct Answer
    A. B. Direct Connections.
    Explanation
    Direct Connections is not one of the four security threats to Wireless Local Area Network. Rogue Access Points, War Drivers, and Hackers are all common security threats to wireless networks. Rogue Access Points refer to unauthorized access points that are set up by individuals with malicious intent. War Drivers are individuals who drive around with wireless devices to detect and exploit vulnerabilities in wireless networks. Hackers are individuals who attempt to gain unauthorized access to a network or system. Direct Connections, on the other hand, do not pose a specific security threat to wireless networks.

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  • 15. 

    (207) What organization developed several wireless standards to meet the demands of security, speed, and flexibility of today’s wireless networks?

    • A. Institute of Electrical Electronics Engineers.

    • B. International Organization for Standardization.

    • C. Internet assigned numbers authority.

    • D. National Science Foundation network.

    Correct Answer
    A. A. Institute of Electrical Electronics Engineers.
    Explanation
    The correct answer is a. Institute of Electrical Electronics Engineers. The Institute of Electrical Electronics Engineers (IEEE) is an organization that has developed several wireless standards to meet the demands of security, speed, and flexibility of today's wireless networks. They have developed standards such as IEEE 802.11 (Wi-Fi) and IEEE 802.15 (Bluetooth), which have become widely adopted in the industry.

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  • 16. 

    (212) What do routing algorithms initialize and maintain to aid the process of path determination?

    • A. Routing times.

    • B. Routing tables.

    • C. Longest routes.

    • D. shortest routes.

    Correct Answer
    A. B. Routing tables.
    Explanation
    Routing algorithms initialize and maintain routing tables to aid the process of path determination. Routing tables contain information about the network topology, including the available routes and their associated metrics or costs. By analyzing this information, the routing algorithm can determine the most efficient path for forwarding packets from the source to the destination. Routing tables are continuously updated and adjusted based on changes in the network, such as link failures or the addition of new routes.

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  • 17. 

    (217) What directory is always identified by the slash symbol (/) and is in the “a” partition?

    • A. root.

    • B. user.

    • C. binary.

    • D. device.

    Correct Answer
    A. A. root.
    Explanation
    The directory that is always identified by the slash symbol (/) and is in the "a" partition is called the root directory.

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  • 18. 

    (234) Which condition permits non-essential networks to be taken offline and substituted with alternate methods of communication?

    • A. INFOCON 2.

    • B. INFOCON 3.

    • C. INFOCON 4.

    • D. INFOCON 5.

    Correct Answer
    A. A. INFOCON 2.
    Explanation
    INFOCON 2 is the condition that permits non-essential networks to be taken offline and substituted with alternate methods of communication. This indicates that the threat level is high and there is a need to secure critical networks by disconnecting non-essential ones. INFOCON 2 signifies a higher level of readiness and security measures compared to INFOCON 3, 4, and 5.

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  • 19. 

    (203) What application within Transmission Control Protocol/Internet Protocol is used to send and receive files via TCP?

    • A. File Transfer Protocol.

    • B. Trivial File Transfer Protocol.

    • C. Simple Mail Transfer Protocol.

    • D. HyperText Transfer Protocol.

    Correct Answer
    A. A. File Transfer Protocol.
    Explanation
    The correct answer is File Transfer Protocol (FTP). FTP is a standard network protocol used to transfer files from one host to another over a TCP-based network, such as the internet. It provides a simple and reliable way to send and receive files, allowing users to upload and download files between their local system and a remote server. FTP uses TCP as its transport protocol to ensure the reliable delivery of data packets. Trivial File Transfer Protocol (TFTP), Simple Mail Transfer Protocol (SMTP), and HyperText Transfer Protocol (HTTP) are not designed specifically for file transfer purposes.

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  • 20. 

    (204) What type of network connects networks that are typically separated by geographical distances between cities, states, countries, or around the world?

    • A. Local Area Network.

    • B. Wide Area Network.

    • C. Virtual Private Network.

    • D. Metropolitan Area Network.

    Correct Answer
    A. B. Wide Area Network.
    Explanation
    A Wide Area Network (WAN) is a type of network that connects networks that are typically separated by geographical distances between cities, states, countries, or around the world. Unlike a Local Area Network (LAN) which connects devices within a limited area, a WAN allows for long-distance communication and enables organizations to connect their remote offices or branches to a centralized network. A Virtual Private Network (VPN) is a technology that allows users to securely access a private network over a public network, and a Metropolitan Area Network (MAN) connects networks within a specific geographic area, such as a city. Therefore, the correct answer is b. Wide Area Network.

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  • 21. 

    (210) What rule establishes the percent of data that should be local to a segment and the percentage of data that should be destined to traverse a bridge to the other segment?

    • A. 90/10 rule.

    • B. 80/20 rule.

    • C. 70/30 rule.

    • D. 60/40 rule.

    Correct Answer
    A. B. 80/20 rule.
    Explanation
    The 80/20 rule establishes that 80% of the data should be local to a segment, meaning it stays within that segment, while 20% of the data should be destined to traverse a bridge to the other segment. This rule helps to balance the distribution of data between segments and optimize network performance.

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  • 22. 

    (212) Dynamic routing automatically calculates the best path between how many nodes?

    • A. 2.

    • B. 3.

    • C. 4.

    • D. 5.

    Correct Answer
    A. A. 2.
    Explanation
    Dynamic routing automatically calculates the best path between two nodes. It considers factors such as network congestion, link quality, and shortest distance to determine the optimal route. This process is performed dynamically, meaning that the routing decisions can change in real-time based on the current network conditions. Therefore, the correct answer is a. 2.

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  • 23. 

    (215) Applications are software programs designed to perform what type of tasks?

    • A. specific.

    • B. general.

    • C. special.

    • D. broad.

    Correct Answer
    A. A. specific.
    Explanation
    Applications are software programs that are designed to perform specific tasks. Unlike general software programs that can perform a wide range of tasks, applications are created with a specific purpose in mind. They are tailored to meet the needs of users who require a particular functionality or solve a specific problem. By focusing on specific tasks, applications can provide targeted features and enhanced performance, making them more efficient and effective for users. Therefore, the correct answer is a. specific.

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  • 24. 

    (201) The Institute of Electrical and Electronics Engineers divide the Open System Interconnect Data Link Layers into what two sublayers?

    • A. High Level Data Link Control and Synchronous Data Link Control.

    • B. Logical Link Control and Media Access Control.

    • C. Distance Vector and Link State.

    • D. RS–232 and RS–530.

    Correct Answer
    A. B. Logical Link Control and Media Access Control.
    Explanation
    The Institute of Electrical and Electronics Engineers (IEEE) divides the Open System Interconnect (OSI) Data Link Layers into two sublayers: Logical Link Control (LLC) and Media Access Control (MAC). The LLC sublayer is responsible for managing communication between network devices and providing error control and flow control. The MAC sublayer is responsible for controlling access to the network media and handling data transmission. Therefore, option b, Logical Link Control and Media Access Control, is the correct answer.

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  • 25. 

    (203) Which network protocol has the Department of Defense chosen as its standard to govern the flow of information?

    • A. AppleTalk.

    • B. NetBios Extended User Interface.

    • C. Transport Control Protocol/Internet Protocol.

    • D. Internetwork Packet Exchange/ Sequenced Packet Exchange.

    Correct Answer
    A. C. Transport Control Protocol/Internet Protocol.
    Explanation
    The Department of Defense has chosen the Transport Control Protocol/Internet Protocol (TCP/IP) as its standard network protocol to govern the flow of information. TCP/IP is a widely used protocol in computer networks, including the internet, and it provides reliable and secure communication between devices. It allows for the transmission of data packets, ensuring that information is properly delivered and received. TCP/IP also provides addressing and routing functions, allowing for efficient and effective communication across networks.

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  • 26. 

    (206) What Unicast address scope is designed to be private, internally routable addresses that do not route outside the site?

    • A. Site-local.

    • B. Link-local.

    • C. Aggregatable Local.

    • D. Aggregatable Global.

    Correct Answer
    A. A. Site-local.
    Explanation
    Site-local Unicast addresses are designed to be private, internally routable addresses that do not route outside the site. These addresses are used within a specific site or organization and are not meant to be globally unique. They are typically used for internal communication and are not advertised or routed outside the site.

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  • 27. 

    (207) The computing part of the computer is the central processing unit, also called the

    • A. control unit.

    • B. minicomputer.

    • C. microprocessor.

    • D. arithmetic logic unit.

    Correct Answer
    A. C. microprocessor.
    Explanation
    The computing part of a computer is referred to as the central processing unit (CPU). The CPU is responsible for executing instructions and performing calculations. The microprocessor is a key component of the CPU, as it is the integrated circuit that carries out the actual processing of data. Therefore, the correct answer is c. microprocessor.

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  • 28. 

    (213) The classification of a fill device is

    • A. classified when taken out of a safe.

    • B. classified as SECRET when the key has been unloaded.

    • C. unclassified when put back in the safe after a key has been loaded into it.

    • D. classified as soon as a key is loaded, and holds the classification of the loaded key.

    Correct Answer
    A. D. classified as soon as a key is loaded, and holds the classification of the loaded key.
    Explanation
    The correct answer is d. When a key is loaded into a fill device, it becomes classified and holds the classification of the loaded key. This means that the fill device itself is not classified until a key is loaded into it. Once a key is loaded, the fill device takes on the same classification as the key, indicating the sensitivity of the information it is designed to protect.

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  • 29. 

    (201) What is a formal set of rules and conventions that govern how computers exchange information over a network medium?

    • A. Specification.

    • B. Standard.

    • C. Etiquette.

    • D. Protocol.

    Correct Answer
    A. D. Protocol.
    Explanation
    A protocol is a formal set of rules and conventions that govern how computers exchange information over a network medium. It outlines the specific format, timing, sequencing, and error control for data transmission. It ensures that devices can communicate effectively and understand each other's messages.

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  • 30. 

    (202) What topology combines two or more different physical topologies in a single network?

    • A. Bus.

    • B. Ring.

    • C. Star.

    • D. Hybrid.

    Correct Answer
    A. D. Hybrid.
    Explanation
    A hybrid topology combines two or more different physical topologies in a single network. This means that a network can have a combination of bus, ring, star, or other topologies. This allows for more flexibility and scalability in designing a network, as different topologies can be used to suit different needs and requirements. Therefore, the correct answer is d. Hybrid.

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  • 31. 

    (202) What topology combines two or more different physical topologies in a single network?

    • A. Bus.

    • B. Ring.

    • C. Star.

    • D. Hybrid.

    Correct Answer
    A. D. Hybrid.
    Explanation
    A hybrid topology combines two or more different physical topologies in a single network. This means that the network can have a mix of different topologies such as bus, ring, or star. This allows for more flexibility and scalability in the network design, as different topologies can be used to suit different needs or requirements.

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  • 32. 

    (203) What Transmission Control Protocol/Internet Protocol network layer protocol provides messaging that can help with troubleshooting?

    • A. Internet Protocol.

    • B. Address Resolution Protocol.

    • C. Reverse Address Resolution Protocol.

    • D. Internet Control Message Protocol.

    Correct Answer
    A. D. Internet Control Message Protocol.
    Explanation
    The Internet Control Message Protocol (ICMP) is a network layer protocol that provides messaging capabilities to help with troubleshooting. ICMP messages are used to report errors, congestion, and other information about the network. These messages can be used by network administrators to diagnose and troubleshoot network issues, such as identifying unreachable hosts or determining the round-trip time for packets. ICMP is an integral part of the TCP/IP protocol suite and is essential for the proper functioning and maintenance of IP networks.

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  • 33. 

    (205) What IPv4 reserved address is used for loop back?

    • A. 0.0.0.0.

    • B. 127.0.0.1.

    • C. 207.55.157.255.

    • D. 255.255.255.255.

    Correct Answer
    A. B. 127.0.0.1.
    Explanation
    The loopback address is a reserved IPv4 address used to test network communication within the device itself. The correct answer is b. 127.0.0.1. This address is commonly referred to as the localhost or loopback address, and it allows a device to send and receive data to itself. It is often used for troubleshooting network issues or testing network applications on a local machine.

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  • 34. 

    (206) What notation is expressed in zero compression for IPv6?

    • A. 1234:1234:0:0:1234:0:0:1234.

    • B. 10AB::3:0:1234:5678.

    • C. 255.255.255.255.

    • D. 127.0.0.1.

    Correct Answer
    A. B. 10AB::3:0:1234:5678.
    Explanation
    The correct answer is b. 10AB::3:0:1234:5678. This notation represents zero compression for IPv6. In IPv6, consecutive blocks of zeros can be compressed to "::". In this answer, "::" is used to compress the consecutive blocks of zeros between "10AB" and "3".

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  • 35. 

    (207) Which of the following is not one of the three advantages to using wireless technology?

    • A. Ease of installation.

    • B. Lower Cost.

    • C. Safety.

    • D. Mobility.

    Correct Answer
    A. C. Safety.
    Explanation
    Wireless technology offers several advantages, including ease of installation, lower cost, and mobility. However, safety is not one of these advantages. While wireless technology may have safety protocols in place, it is not inherently safer than other forms of technology. Safety concerns can still arise with wireless technology, such as security breaches or interference. Therefore, safety is not considered one of the three advantages of using wireless technology.

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  • 36. 

    (202) What topology consists of devices connected to a common, shared cable?

    • A. Bus.

    • B. Ring.

    • C. Star.

    • D. Hybrid.

    Correct Answer
    A. A. Bus.
    Explanation
    The correct answer is a. Bus. In a bus topology, devices are connected to a common cable called a bus. All devices on the network share this cable, and data is transmitted in both directions. Each device receives all the data transmitted on the bus, but only the intended recipient processes the data. This topology is simple and cost-effective, but can be prone to collisions and performance issues as more devices are added to the network.

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  • 37. 

    (203) What Transmission Control Protocol/Internet Protocol network layer protocol provides the IP address for a device that knows its own MAC address?

    • A. Internet Protocol.

    • B. Address Resolution Protocol.

    • C. Reverse Address Resolution Protocol.

    • D. Internet Control Message Protocol.

    Correct Answer
    A. C. Reverse Address Resolution Protocol.
    Explanation
    The Reverse Address Resolution Protocol (RARP) is a network layer protocol that provides the IP address for a device that knows its own MAC address. RARP allows a device to send its MAC address to a RARP server and request its corresponding IP address. This is useful in situations where a device does not have a configured IP address and needs to obtain one dynamically. RARP is the reverse process of Address Resolution Protocol (ARP), which maps an IP address to a MAC address.

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  • 38. 

    (205) How many bits are in an IPv4 address?

    • A. 16 bits.

    • B. 32 bits.

    • C. 64 bits.

    • D. 128 bits.

    Correct Answer
    A. B. 32 bits.
    Explanation
    An IPv4 address is a 32-bit address, which means it consists of 32 binary digits or bits. Each bit can be either a 0 or a 1, allowing for a total of 2^32 (approximately 4.3 billion) unique addresses. This addressing scheme is used to identify and locate devices on a network using the Internet Protocol version 4 (IPv4) protocol.

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  • 39. 

    (201) What layer of the Open System Interconnect model defines the electrical, mechanical, procedural, and functional specifications for links between communicating network systems?

    • A. Physical.

    • B. Data Link.

    • C. Network.

    • D. Transport.

    Correct Answer
    A. A. Physical.
    Explanation
    The physical layer of the Open System Interconnect model is responsible for defining the electrical, mechanical, procedural, and functional specifications for links between communicating network systems. This layer deals with the physical transmission of data, including the physical medium (such as cables and connectors) and the encoding and decoding of data. It ensures that the data is transmitted reliably and accurately over the network.

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  • 40. 

    (203) What Transmission Control Protocol/Internet Protocol transport layer protocol provides reliable data delivery services?

    • A. Internet Protocol.

    • B. User Datagram Protocol.

    • C. Transmission Control Protocol.

    • D. Internet Control Message Protocol.

    Correct Answer
    A. C. Transmission Control Protocol.
    Explanation
    The Transmission Control Protocol (TCP) provides reliable data delivery services. TCP ensures that data packets are delivered in the correct order and without errors. It uses acknowledgments and retransmissions to guarantee that all data is successfully received by the recipient. TCP also manages congestion control to prevent network congestion and ensure efficient data transmission.

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  • 41. 

    (225) While you are using the Red Switch, what feature lets you know that you have dialed the correct number at the proper level of security?

    • A. Recorded voice message.

    • B. Punched computer cards.

    • C. Liquid crystal display.

    • D. Punched paper tape.

    Correct Answer
    A. C. Liquid crystal display.
    Explanation
    The liquid crystal display is the feature that lets you know that you have dialed the correct number at the proper level of security while using the Red Switch.

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  • 42. 

    (234) When a risk of a network system attack has been identified, which condition requires all unclassified dial-up connections be disconnected?

    • A. INFOCON 2.

    • B. INFOCON 3.

    • C. INFOCON 4.

    • D. INFOCON 5.

    Correct Answer
    A. B. INFOCON 3.
    Explanation
    INFOCON 3 is the condition that requires all unclassified dial-up connections to be disconnected when a risk of a network system attack has been identified. INFOCON stands for Information Operations Condition and is a system used by the military to assess and communicate the level of information security threats. INFOCON 3 indicates a significant risk of attack, and as a precautionary measure, all unclassified dial-up connections are disconnected to minimize the potential impact of the attack.

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  • 43. 

    (205) Instead of using binary, how are IPv4 addresses expressed to be more user-friendly?

    • A. Colon Hexadecimal Format.

    • B. Dotted Decimal Notation.

    • C. Hexadecimal.

    • D. Octal.

    Correct Answer
    A. B. Dotted Decimal Notation.
    Explanation
    IPv4 addresses are expressed in dotted decimal notation to make them more user-friendly. In this format, the address is divided into four sections, each representing one byte of the address. Each section is separated by a dot, making it easier for users to read and understand the address. This format is widely used and allows for easy recognition and interpretation of IPv4 addresses.

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  • 44. 

    (205) What is a mechanism that allows a network device to divide an IP address into a network and host number?

    • A. Subnet mask.

    • B. Broadcast.

    • C. Multicast.

    • D. Subnet.

    Correct Answer
    A. A. Subnet mask.
    Explanation
    A subnet mask is a mechanism that allows a network device to divide an IP address into a network and host number. It is used to determine which part of the IP address represents the network and which part represents the host. By using a subnet mask, the device can identify the network to which the IP address belongs and route the data accordingly.

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  • 45. 

    (212) Which of these is an example of an Exterior Gateway Protocol?

    • A. Open Shortest Path First.

    • B. Border Gateway Protocol.

    • C. Routing Information Protocol.

    • D. Enhanced Gateway Routing Protocol.

    Correct Answer
    A. B. Border Gateway Protocol.
    Explanation
    Border Gateway Protocol (BGP) is an example of an Exterior Gateway Protocol. BGP is used to exchange routing information between different autonomous systems (AS) on the internet. It is responsible for determining the best path for data to travel across multiple networks. BGP is widely used by internet service providers (ISPs) to establish and maintain routing tables, allowing for efficient and reliable routing of internet traffic between different networks. Other options mentioned, such as Open Shortest Path First (OSPF), Routing Information Protocol (RIP), and Enhanced Gateway Routing Protocol (EGRP), are examples of Interior Gateway Protocols (IGP), which are used within a single network or autonomous system.

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  • 46. 

    (201) At what Open System Interconnect layer do routers operate?

    • A. Network.

    • B. Physical.

    • C. Data Link.

    • D. Transport.

    Correct Answer
    A. A. Network.
    Explanation
    Routers operate at the Network layer of the Open System Interconnect (OSI) model. The Network layer is responsible for routing packets across different networks, determining the best path for data transmission, and addressing logical network addresses. Routers use IP addresses to make routing decisions and connect different networks together. They analyze the destination IP address of a packet and use routing tables to determine the next hop for forwarding the packet to its destination. Therefore, the correct answer is a. Network.

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  • 47. 

    (204) Which is a common port that contains Hyper Text Transfer Protocol servers and proxies?

    • A. Port 80.

    • B. Port 110.

    • C. Port 443.

    • D. Port 8080.

    Correct Answer
    A. D. Port 8080.
    Explanation
    Port 8080 is a common port that contains Hyper Text Transfer Protocol (HTTP) servers and proxies. HTTP is the protocol used for transmitting web pages and other resources over the internet. Port 8080 is often used as an alternative to the default HTTP port (port 80) when the latter is already in use or blocked. It allows for the hosting of multiple web servers or applications on the same machine without conflicts.

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  • 48. 

    (205) What is the default classful subnet mask on class B networks?

    • A. 255.255.0.0.

    • B. 255.255.240.0.

    • C. 255.255.255.0.

    • D. 255.255.255.224.

    Correct Answer
    A. A. 255.255.0.0.
    Explanation
    The default classful subnet mask for class B networks is 255.255.0.0. In classful networking, IP addresses are divided into classes, and class B addresses have a default subnet mask of 255.255.0.0. This subnet mask allows for a larger number of available network addresses compared to class C networks, which have a default subnet mask of 255.255.255.0. The subnet mask 255.255.0.0 allows for 16 bits of network address and 16 bits of host address, providing a total of 65,536 possible network addresses.

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  • 49. 

    (207) What two main components make up the central processing unit?

    • A. Control unit and read-only memory.

    • B. Control unit and arithmetic logic unit.

    • C. Arithmetic logic unit and read-only memory.

    • D. Arithmetic logic unit and random access memory.

    Correct Answer
    A. B. Control unit and arithmetic logic unit.
    Explanation
    The central processing unit (CPU) is made up of two main components: the control unit and the arithmetic logic unit (ALU). The control unit is responsible for coordinating and controlling the operations of the CPU, while the ALU performs arithmetic and logical operations. These two components work together to execute instructions and process data in a computer system.

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Quiz Review Timeline (Updated): Mar 22, 2023 +

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  • Current Version
  • Mar 22, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Apr 26, 2012
    Quiz Created by
    Beto612

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