Revision Unit 1 For The Second Grade Intermediate (1st Semester)

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The given statement describes a network that connects computer networks and devices worldwide. The term "الإنترنت" specifically refers to the global network that connects millions of computers and devices together. Therefore, "الإنترنت" is the correct answer as it perfectly matches the description provided.

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The given statement states that accurate and reliable information can be found on official and trusted websites such as the Saudi Press Agency. This implies that the statement is correct as it highlights the importance of relying on credible sources for accurate information.

The term that refers to keeping information confidential and secure, protecting it from theft and loss, is called "أمن المعلومات" in Arabic. This concept encompasses various measures and practices aimed at safeguarding sensitive information and ensuring its integrity and availability. It involves implementing security protocols, encryption, access controls, and other strategies to prevent unauthorized access, disclosure, alteration, or destruction of data.

The correct answer is "تشفير المعلومات" which translates to "encryption of information". This is the process of converting information into a code that can only be understood by the sender and the receiver. Encryption ensures that data transmitted over a network is secure and protected from unauthorized access or interception. It is an essential measure to maintain the confidentiality and integrity of sensitive information.

The given statement is correct. The IP address is used to identify the location of a device on the internet when transmitting data from one device to another. IP stands for Internet Protocol, and it serves as a unique identifier for devices connected to a network. It allows data packets to be routed correctly across different networks and ensures that the data reaches its intended destination.

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The statement is correct because internet addiction can occur when individuals spend excessive amounts of time on the internet without any productive or beneficial outcomes. This can lead to negative consequences such as neglecting responsibilities, social isolation, and withdrawal symptoms when not using the internet.

The correct answer is "شبكة الحاسب" because it refers to connecting one or more computers to exchange data and participate in associated resources. The other options, such as "شبكة الهاتف" (telephone network), "شبكة الاتصالات" (communication network), and "شبكة الكهرباء" (electricity network), do not specifically mention the connection of computers and data exchange.

The given question is asking about the use of someone's online identity to obtain confidential information. This is commonly known as "identity theft" or "انتحال الشخصية" in Arabic. It involves impersonating someone else online in order to gain access to their personal or financial information. This can be done through various means such as phishing scams, hacking into accounts, or using malware to capture sensitive data.

The correct answer is "وسائل سلكية" because the question is asking for a means of communication in computer networks that relies on tangible wires for connecting devices and networks. "وسائل سلكية" translates to "wired means" which accurately describes the use of physical cables for communication. The other options, "وسائل لا سلكية" (wireless means), "المودم" (modem), and "المبدل" (switch), do not specifically refer to the use of tangible wires for communication.

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The statement is correct because the connection between a modem and a computer can be either wired or wireless. This means that you can connect your computer to the modem using an Ethernet cable or through a wireless connection such as Wi-Fi.

Every computer connected to the internet has a unique address called an IP address.

The given list contains a series of IP addresses. An IP address is a numerical label assigned to each device connected to a computer network that uses the Internet Protocol for communication. Among the given options, 21.12.33.43 is the only valid IP address as it consists of four sets of numbers separated by periods and each set contains numbers ranging from 0 to 255. The other options, 11.22 and 11.22.55, do not follow the correct format of an IP address.

WAN (Wide Area Network) is the correct answer because it is the largest type of computer network in terms of spatial coverage. WANs cover a wide geographical area, such as a city, country, or even multiple countries, and connect multiple smaller networks, such as LANs (Local Area Networks) or MANs (Metropolitan Area Networks). PANs (Personal Area Networks) are the smallest type of network, typically covering a very short range, while LANs and MANs have larger coverage areas compared to PANs but are still smaller than WANs.

The correct answer is "سلكية - لا سلكية" which translates to "Wired - Wireless" in English. This answer suggests that the means of communication in computer networks can be both wired and wireless. Wired communication refers to the use of physical cables or wires to transmit data, while wireless communication involves the use of radio waves or other wireless technologies to transmit data without the need for physical connections.

The statement "الإنترنت ليست كلمة عربية" is correct. It translates to "The Internet is not an Arabic word." This is true because the word "Internet" originated from the English language and does not have Arabic origins.

The given statement describes a computer network that is designed for a limited physical area, such as a school laboratory. This type of network is known as a Local Area Network (LAN), which connects devices within a small geographical area. Therefore, the correct answer is LAN.

The given description states that the network covers a large area and connects computers in different cities and countries. This aligns with the definition of a Wide Area Network (WAN), which is a network that spans a large geographical area and connects multiple Local Area Networks (LANs) and Metropolitan Area Networks (MANs). Therefore, the correct answer is WAN.

The correct answer is "وسائل لا سلكية" (wireless means of communication). This is because the question is asking for a method of communication in computer networks that relies on signal transmission and does not use physical wires. "وسائل لا سلكية" refers to wireless communication technologies such as Wi-Fi, Bluetooth, or infrared that transmit data through the air without the need for physical cables.

The given options include "وسائل سلكية" (wired means) and "وسائل لا سلكية" (wireless means), which refer to different types of connections. The options also include "المودم" (modem), which is a device that connects a computer to the internet. However, the correct answer is "المبدل" (switch), which is a device that connects multiple computers together within a local network. Therefore, the switch is the device that connects multiple computers.

The correct answer is PAN. PAN stands for Personal Area Network, which is a network that is designed for a small area, typically no larger than a room. It is used for connecting devices that are in close proximity to each other, such as a computer, smartphone, and other personal devices. LAN (Local Area Network) is a network that covers a small geographical area, MAN (Metropolitan Area Network) covers a larger area like a city, and WAN (Wide Area Network) covers a wide geographical area, such as multiple cities or even countries.

The connection between a desktop computer and a printer using Bluetooth technology is an example of a Personal Area Network (PAN). A PAN is a network that connects devices within a short range, typically within a person's workspace or immediate surroundings. In this case, the desktop computer and the printer are in close proximity to each other, allowing for a wireless connection using Bluetooth technology.

The given statement "شبكة حاسب تـُـدار من فرد" translates to "A computer network managed by an individual." This suggests that the network is a Personal Area Network (PAN), which is a network that connects devices within a small area, typically within the reach of an individual. The other options, LAN, MAN, and WAN, refer to larger networks that cover larger areas and are typically managed by organizations or service providers. Therefore, PAN is the correct answer.

The correct answer is WAN because the internet is a global network that connects computers and devices from all over the world. It covers a wide area, allowing users to access information and resources from different locations. PAN, LAN, and MAN are all types of networks, but they have a more limited coverage compared to WAN.

The correct answer is "المبدل" because it refers to a device that receives signals from the connected computer, identifies the sender's device address through the signals, and then sends the content to that device.

The given statement suggests that a computer network can be found in a school laboratory or a company building. A LAN (Local Area Network) is a type of computer network that is typically found in a limited geographical area, such as a school or office building. Therefore, LAN is the most appropriate option based on the given information.

The given statement states that a computer network has a limited number of devices. LAN (Local Area Network) is a type of network that is confined to a small geographic area, such as a home, office, or building. It typically connects a limited number of devices within this area. Therefore, LAN aligns with the statement provided. MAN (Metropolitan Area Network), PAN (Personal Area Network), and WAN (Wide Area Network) are not limited to a specific number of devices and can cover larger areas.

The given statement describes the act of attempting to gain unauthorized access to individuals' or companies' devices and systems using specialized software through vulnerabilities in the security system. This act is commonly referred to as "الاختراق" in Arabic.

The given phrase "شبكة حاسب تمتد في حدود مدينة" translates to "A computer network that extends within the boundaries of a city." Based on this information, the correct answer is MAN (Metropolitan Area Network), which is a network that covers a larger geographic area than a LAN (Local Area Network) but smaller than a WAN (Wide Area Network). A MAN typically covers a city or a metropolitan area.

The given statement describes a network that connects schools in separate buildings within a city to an educational company. This type of network is known as a Metropolitan Area Network (MAN). A MAN covers a larger geographic area than a Local Area Network (LAN) but smaller than a Wide Area Network (WAN). Since the schools and the educational company are located within the same city, it is appropriate to classify the network as a MAN.

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The connection between a desktop computer and a laptop computer using Bluetooth is an example of a Personal Area Network (PAN). A PAN is a network that is used for communication between devices in close proximity to each other, typically within a range of 10 meters. In this case, the desktop computer and laptop are able to connect and share data wirelessly using Bluetooth technology, which is a common method of creating a PAN.

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The statement is incorrect. The internet connects countries through underwater cables, not underground wires. These cables are laid on the ocean floor and are responsible for transmitting data between different countries.

The correct answer is المودم (modem). A modem is a device that allows computers to transmit digital signals over telephone lines or wirelessly. It converts the digital signals from the computer into a form that can be transmitted over the phone lines or wireless networks, and vice versa. Therefore, a modem is responsible for modifying the digital signals emitted by the computer to match the telephone environment.

The correct answer is "عبارة خاطئة" which translates to "Incorrect statement". This means that the statement "تقوم هيئة الترفيه بحجب المواقع السيئة" is false.

The correct answer is "انتشار الشائعات" because the spread of rumors can lead to misinformation and false information being circulated, which can compromise the security of information. When false information is shared, it can create confusion and make it difficult to distinguish between what is true and what is not, making it easier for malicious actors to exploit vulnerabilities and gain unauthorized access to sensitive information. Therefore, the spread of rumors can contribute to the weakness of information security.