In a packet-switched data network, what is used to reassemble the packets in the correct order at the destination device?
The firewall determines if network traffic should continue on to its destination or be stopped.True (Correct!)False
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A router connects multiple computers together and transmits data to its correct destination on a network.
The details vary enormously from protocol to protocol, but the basics are the same for all of them. A stream of data is split into packets, the packet has a header which contains (amongst other things) the destination for the packet. The network uses the destination address to deliver the network to the correct destination.
Hosts ensure that their packets are directed to the correct network destination through the use of IP addresses and routing tables. When a host wants to send data, it encapsulates the packet with the destination IP address, which identifies the target device on the network. Routers then use their routing tables to determine the best path for the packet to reach its destination, forwarding it across interconnected networks until it arrives at the intended host. Additionally, protocols like ARP (Address Resolution Protocol) are used to resolve IP addresses to MAC addresses within local networks, ensuring correct delivery at the data link layer.
A subnet mask is used by a router to determine which part of an IP address identifies the network and which part identifies the host. When a router receives a packet, it applies the subnet mask to the destination IP address to ascertain if the destination is within the same local network or if it needs to route the packet to a different network. This helps in efficient routing and ensures that data packets are sent to the correct destination. Additionally, it allows routers to manage and segment network traffic effectively.
In a datagram network, the destination addresses are unique. They cannot be duplicated in the routing table.
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the network path to a destination
Data travels over a network through a series of packets that are routed from the source to the destination using various protocols. Each packet contains destination information, allowing routers and switches to determine the optimal path across the network. As packets traverse the network, they may take different routes but are reassembled at the destination to form the complete message. This process ensures efficient and reliable data transmission across diverse network infrastructures.
A Switch looks at the MAC address its a layer 2 device (OSI Model).