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Layer 3 network addresses are logical addresses and can be easily changed by software.
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Which OSI layer addresses data messages translates logical addresses into actual physical address and routes data to addresses on the network?
Network layer
Network layer protocol that obtains the MAC physical address of a host or node and then creates a database that maps the MAC address to the hosts IP logical address?
ARP
What is difference between a logical network and physical?
A physical network is different from a logical network. Logical networks are defined at the Network layer by the arrangement of the hierarchical addressing scheme. Physical networks represent the interconnection of devices on a common media. Sometimes, a physical network is also referred to as a network segment
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.
Which layer of the OSI model is primarily concerned with accessing the physical media and physical addressin?
The Physical layer is responsible for the actual hardware connection. The physical addressing is handled by the Data Link Layer.
Is ip address is a physical address?
No an IP address is considered a logical address. Physical address refers to a MAC address which is burned into ROM on each Ethernet network interface card or NIC. In theory every NIC card has a unique physical address which denotes its manufacture and its own unique address. The logical address or IP internet protocol address is used for layer 3 routing between networks and subnets.
Difference between logical topology and physical topology?
The physical connection is layer 1 of the OSI model, and is the medium through which the data is transfered. i.e., cables The logical connection is layer 3 of the OSI model, and is the network portion. Using the Internetwork Protocol (IP), each host is assigned a 32 bit IP address. e.g. 192.168.1.1
What are logical and physical address?
Through logical address the system identify a network (source to destination). after identifying the network physical address is used to identify the host on that network. The port address is used to identify the particular application running on the destination machine.Logical Address: An IP address of the system is called logical address. This address is the combnation of Net ID and Host ID. This address is used by network layer to identify a particular network (source to destination) among the networks. This address can be changed by changing the host position on the network. So it is called logical address.Physical address: Each system having a NIC(Network Interface Card) through which two systems physically connected with each other with cables. The address of the NIC is called Physical address or mac address. This is specified by the manficture company of the card. This address is used by data link layer.Port Address: There are many application running on the computer. Each application run with a port no.(logically) on the computer. This port no. for application is decided by the Karnal of the OS. This port no. is called port address.
Which OSI layer addresses data messages translates logical addresses into actual physical addresses and routes data to addresses on the networks?
Network layer
Why IP address is logical and MAC address is physical?
A MAC (Media Access Control) address is physical because it physically identifies the NIC (Network Interface Card). When two NIC's talk to each other, they address each other by MAC address. In order for this to work, the NIC's have to be connected to the same physical network. If the two NIC's are on different networks, they must use an intermediary, such as a router or gateway, to proxy the message between networks. An IP (Internet Protocol) address, on the other hand, is logical because it sits at a higher level in the protocol stack. This is similar to the relationship between NetBios, NetBeui, IPX/SPX, etc. - each of those protocols has an address, but they all ride on top of the MAC layer. There is certainly a relationship, a one-to-one relationship, between an IP address and a MAC address. This relationship is established by the ARP (Address Resolution Protocol) which runs alongside the MAC layer, or sort of in between the MAC layer and the IP layer.
Which are good criteria to break a large network into multiple access layer network?
Logical Grouping, Physical Location, Application Usage, Security...ALL
Is ARP the core protocol responsible for logical addressing?
The structure of the question is meant to trick you because 'logical addressing' is being used loosely. Technically, IP is the CORE protocol responsible for logical addressing. ARP is the network layer protocol that is used to discover the identity(physical address) of a machine whose IP address you know. Very briefly, it does this by creating a database that maps the MAC address to the (hosts') logical address provided.
