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How many routers a datagram can pass through?
A datagram can pass through multiple routers, depending on the network topology and the destination. There's no fixed limit to the number of routers; it can be as few as one or two for local communication or many more in complex networks spanning large distances. Each router processes the datagram and forwards it toward its destination based on routing protocols. Ultimately, the number of routers a datagram traverses is determined by the path taken through the network.
What is datagram Subnet?
datagram subnet is connection oriented network.
What is the role of the address field in a packet travelling through a datagram?
There are two address fields. Source is the IP address the packet came from and destination is the IP address the packet is meant to be delivered to.
Which operation is used by a router to extract the destination network address from the destination IP address of a packet?
Route table lookup
What can be identified by the network layer header?
destination host address
Which portion of a received datagram is decoded and used by the internetwork layer of the tcpip model?
Only the Network Layer (Layer 3) portion of the datagram is used by the Network Layer (Layer 3) portion of the TCP/IP Model. The network portion of the datagram includes IP Addressing information, and things such as TTL (Time to Live), and Datagram Priority markings.
What happens when a node on an Ethernet network is creating a frame and it does not have the destination MAC address?
The node sends out an ARP request with the destination IP address.
What are the two most important network layer functions in a datagram network?
Forwarding and Routing.
What contact does IPv4 make with the destination before sending a packet?
Before sending a packet, IPv4 establishes contact with the destination by using the Address Resolution Protocol (ARP) to map the destination IP address to a MAC (Media Access Control) address on the local network. If the destination is on a different network, IPv4 sends the packet to the default gateway, which is determined by the subnet mask. The packet includes the destination IP address, and the network layer handles routing it through the appropriate paths until it reaches the destination.
What information is found in the network layer header?
The destination host address
Is the default gateway address a portion of the destination IP address?
No, it is not. A destination IP address may be any address, usually on a completely different network. The default gateway address is used to determine where to send packets that need to be routed outside of the current local area network.
Which network components are identified by a Backbone Destination Address and a Backbone Source Address?
The Provider Edge Bridges
