COMPUTER ETHICS AND SECURITY
TYPES OF THREATS AND ATTACKS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Data-Link Layer
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Network Layer
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Transport Layer
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Physical Layer
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Detailed explanation-1: -Physical addressing for network connections exists at the data link layer. The data link layer combines data bits into entities called frames. Network topologies like Ethernet exist at the data link layer. Network switches are the most common network devices that exist at the data link layer.
Detailed explanation-2: -Data Link and Physical Layers Layer 2 (Data Link) receives packets from Layer 3. Whereas Layer 4 performs logical addressing (IPv4, IPv6), Layer 2 performs physical addressing. It adds sender and receiver MAC addresses to the data packet to form a data unit called a frame.
Detailed explanation-3: -Bridges work only at the Physical and Data Link layers of the OSI model. Bridges are used to divide larger networks into smaller sections by sitting between two physical network segments and managing the flow of data between the two.
Detailed explanation-4: -The physical layer describes the way data is actually transmitted on the network medium. The data link layer defines how these streams of bits are put together into manageable chunks of data. Ethernet is the best known implementation of the physical and data link layers.