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IT Certification Practice Exams Virtual Trunking Protocol (VTP) is used for communication within VLANs. VLANs, short for Virtual LANs, are used in place for traditional LANs for ease of maintenance, and security. The article discusses different VTP protocols. Body: Communicating within VLANs: There are different protocols available for communicating between VLANs. These encapsulation schemes are also [...] Subnetting an IP Network is done primarily for better utilization of available IP address space, and routing purpose. Other reasons include better organization, use of different physical media (such as Ethernet, WAN, etc.), and securing network resources. A subnet mask enables you to identify the network and node parts of the address. The network bits are [...] With the recent advent of wireless communications, several wireless technologies have come to the fore. Notable among these are Blue tooth, Infrared, Wimax, and WiFi. Each of these communications methods is discussed in the article. With the recent advent of wireless communications, several wireless technologies have come to the fore. Notable among these are Blue tooth, [...] Open Systems Interconnection (OSI) model is a reference model developed by ISO (International Organization for Standardization), as a conceptual framework of standards for communication in a network across different applications by different vendors. It has become the primary architectural model for inter-computing and internetworking communications. Most of the network communication protocols used today have a [...] Summary: Security of information is important when the information is stored or transferred over the public Internet. To address the security concerns of Internet users, several algorithms are being used depending on the type of security and level of protection required. The article discusses about these algorithms, and the levels of protection available in each [...] Summary: Security of information is important when the information is stored or transferred over the public Internet. To address the security concerns of Internet users, several algorithms are being used depending on the type of security and level of protection required. The article discusses about these algorithms, and the levels of protection available in each [...] The article provides an overview of different fault tolerant schemes available for systems administrators for backing up data, and recovering from systems failures. The following methods provide fault tolerance for hard-disk systems: • Mirroring Disk Mirroring: Mirroring a drive means designating a hard-disk drive in the computer as a duplicate to another specified [...] Malware is a term used to describe any “malicious software” program. Malware includes spyware, adware, tracking cookies, Trojan horses, worms, and viruses. With the advent of Internet, computer malware programs have become widespread. Malware is a generic term used for any malicious programs such as viruses, Trojan horses, spywares, adwares, worms, etc. These are described briefly [...] LANs (Local Area Networks) and WANs (Wide Area Networks) are two basic types of networks used in digital communications. Typically, LANs are used within a private campus, where as WANs require regional government permission for laying and may cover very long distances. LANs (Local Area Networks) and WANs (Wide Area Networks) are two basic types of [...] |
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