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Wireless security. Wireless security is the prevention of unauthorized access or damage to computers or data using wireless networks, which include Wi-Fi networks. The term may also refer to the protection of the wireless network itself from adversaries seeking to damage the confidentiality, integrity, or availability of the network.
The Address Resolution Protocol ( ARP) is a communication protocol used for discovering the link layer address, such as a MAC address, associated with a given internet layer address, typically an IPv4 address. This mapping is a critical function in the Internet protocol suite. ARP was defined in 1982 by RFC 826, [1] which is Internet Standard ...
Portugal has a 68,732 km (42,708 mi) road network, of which almost 3,000 km (1,864 mi) are part of system of 44 motorways. On many highways, a toll needs to be paid (see Via Verde ). Vasco da Gama bridge is the longest bridge in the EU (the second longest in Europe) at 12.345 km. [186] [187]
On an Internet Protocol (IP) network, IP packets with a destination outside a given subnetwork are sent to the network gateway. For example, if a private network has a base IPv4 address of 192.168.1.0 and has a subnet mask of 255.255.255.0, then any data addressed to an IP address outside of 192.168.1.0–192.168.1.255 is sent to the network ...
Router (computing) Rack containing a service-provider–class router connected to multiple networks. A router [a] is a computer and networking device that forwards data packets between computer networks, including internetworks such as the global Internet. [2] [3] [4] A router is connected to two or more data lines from different IP networks.
The Internet protocol suite, commonly known as TCP/IP, is a framework for organizing the set of communication protocols used in the Internet and similar computer networks according to functional criteria. The foundational protocols in the suite are the Transmission Control Protocol (TCP), the User Datagram Protocol (UDP), and the Internet ...
السعودية. Saudi Arabia, [e] officially the Kingdom of Saudi Arabia ( KSA ), [f] is a country in West Asia and the Middle East. It covers the bulk of the Arabian Peninsula and has a land area of about 2 150 000 km 2 ( 830 000 sq mi), making it the fifth-largest country in Asia and the largest in the Middle East.
Cuba, [c] officially the Republic of Cuba, [d] is an island country, comprising the island of Cuba, Isla de la Juventud, archipelagos, 4,195 islands and cays surrounding the main island. Cuba is located where the northern Caribbean Sea, Gulf of Mexico, and Atlantic Ocean meet. Cuba is located east of the Yucatán Peninsula (Mexico), south of ...