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What type of address identifies the source of data in frame?
MAC
What is the MAC address of the source in the first frame?
To determine the MAC address of the source in the first frame, you would need to analyze the frame's header information, typically found in a network packet capture tool like Wireshark. The source MAC address is usually listed alongside the destination MAC address in the Ethernet frame header. If you have the specific frame data available, you can extract the source MAC address directly from there. If you provide more context or data, I can assist further!
What is the unit of information called when a network adapter adds the source and destination MAC address to the segment of data before it is transmitted on the network?
Packet
What is the purpose of the 7-byte preamble and 1-byte start-of-frame delimiter on an Ethernet frame?
The purpose is the preamble signals to the receiving node that data is incoming and indicates when the data flow is about to begin. The SFD (start-of-frame delimiter) identifies where the data field begans.
In which of the following would be found in a data link layer header?
The data link layer header contains the source's physical address. It refers the address that is found in the Network Interface Card.
At what layer a NIC identifies itself using the MAC address?
Data Link Layer...
What address does a switch build into its table to successfully send data to that device?
A switch builds a MAC address table, which contains the MAC addresses of devices connected to its ports along with the corresponding port numbers. When a switch receives a data frame, it reads the source MAC address and updates its table if the address is not already present. To send data to a specific device, the switch looks up the destination MAC address in its table and forwards the frame out of the appropriate port associated with that address. If the destination address is not found, the switch broadcasts the frame to all ports except the one it received it on.
What does the format for Ethernet frames specify?
destination (physical/hardware address) Source (physical/hardware address) Start flag (start of message indicator) Recipient sender encapsulated data end of frame
Which identifies the VLAN to switch each piece of data to where it belongs?
If a switch receives a frame (a piece of data) from a certain port, it will identify that as belonging to a certain VLAN, because each port is assigned a certain port.In a trunk link, additional data is added to each frame (frame tagging), to identify to which VLAN each frame belongs.
How does a computer on a LAN detect an error in a frame?
It calculates a check-sum from the data in the frame and sends it to the source for verification
What protocols are in the Ethernet frame?
The ethernet frame carries the IP (Internet Protocol) The Ethernet frame is made up of the following: 7 BYTE PREAMBLE 1 Byte "Start OF Frame" delimiter 6 byte destination address 6 byte source address 2 byte length or type 46 - 1500 bytes variable 802.2 or ethernet header and data 4 byte Frame Check sequence
Why both physical address is needed for data transfer in a network?
Both physical addresses (MAC addresses) and logical addresses (IP addresses) are needed for data transfer in a network to ensure proper routing and delivery. The logical address identifies the device within a specific network and facilitates communication across different networks, while the physical address uniquely identifies a device on a local network segment. This two-tier addressing system enables efficient data transfer by allowing packets to be routed accurately from source to destination through various network layers.
