The most significant protocol
at layer 3 (also called the network layer)
is the Internet Protocol, or IP. IP is the standard for routing packets across interconnected networks–hence, the name internet. It is an encapsulating protocol similar to the way Ethernet is an encapsulating protocol.
Is IP address Layer 2?
The IP address is a layer 3 (network layer) address. The MAC address is a layer 2 (data link) address. … It will pertain to a single protocol (such as IP, IPX, or Appletalk). The layer 2
address is a physical address
.
At what layer would you find IP addresses?
The Internet Layer
In which layer do you find the IP address of source and destination?
Layer 3 (Network)
transmits data segments between networks in the form of packets. When you message your friend, this layer assigns source and destination IP addresses to the data segments. Your IP address is the source, and your friend’s is the destination. Layer 3 also determines the best paths for data delivery.
Which layer would you find IP addresses and MAC addresses?
MAC address works at
the data link layer of
the OSI model and allows computers to uniquely identify themselves in the network at a relatively lower level. IP Address: IP Address works at the network layer of OSI model (actually the IP layer of TCP/IP model).
Is ARP a Layer 3?
ARP works between Layers 2 and 3 of the Open Systems Interconnection model (OSI model). The MAC address exists on Layer 2 of the OSI model, the data link layer. The IP address exists on Layer 3,
the network layer
.
What layer is DNS?
DNS is an
application layer protocol
. All application layer protocols use one of the two transport layer protocols, UDP and TCP.
Is router a Layer 2 device?
Think of them as functions. Routing is a layer 3 function.
Packet switching
is a layer 2 function. If a router can packet switch as well as route, it is a layer 2 and layer 3 device.
Is DNS a Layer 2 or 3?
| OSI Ref. Layer No. OSI Layer Equivalent TCP/IP Protocol Examples | 5,6,7 Application, session, presentation NFS, NIS+, DNS, telnet , ftp , rlogin , rsh , rcp , RIP, RDISC, SNMP, and others | 4 Transport TCP, UDP | 3 Network IP, ARP, ICMP | 2 Data link PPP, IEEE 802.2 |
|---|
What are the Layer 2 devices?
A Layer 2 switch is a device that operates according to the Layer 2 data communications protocol. A Layer 2 device
decides how to forward data based on the MAC address
. Ethernet hubs and network switches work at the data link layer, with a switch delivering greater performance than a hub.
Can two devices have same MAC Address?
If two devices have the same MAC Address (which occurs more often than network administrators would like),
neither computer can communicate properly
. … Duplicate MAC Addresses separated by one or more routers is not a problem since the two devices won’t see each other and will use the router to communicate.
What is IP address and MAC Address?
The main difference between MAC and IP address is that
MAC Address is used to ensure the physical address of the computer
. It uniquely identifies the devices on a network. While IP addresses are used to uniquely identifies the connection of the network with that device takes part in a network.
What layer of OSI is MAC Address?
In the OSI model, the MAC sublayer of
the data-link layer (Layer 2)
implements MAC addresses.
Can I identify a device by its MAC address?
MAC addresses can sometimes be used to identify the maker and potentially model of the device even without the device in hand. This is called the
OUI (organizationally unique identifier)
.
What layer is ARP?
ARP is a protocol used by the Internet Protocol (IP) [RFC826], to map IP network addresses to the hardware addresses used by a data link protocol. The protocol operates
below the network layer
as a part of the interface between the Open Systems Interconnection (OSI) network and OSI link layer.
How do I find the lowest MAC address?
After that first MAC address has smallest bit/number i.e. 0. So
MAC 0f00. 0ace. 0000
should be smallest address.
