Which layer is absent in broadcast network

Time To Live TTL : Using this field, we can set the time within which the packet should be delivered or else destroyed. It is strictly treated as the number of hops. The packet should reach the destination in this number of hops. Every router decreases the value as the packet goes through it and if this value becomes zero at a particular router, it can be destroyed. It is the next encapsulated protocol. Since the TTL field is changing at every router so the header checksum upto the options field is checked and recalculated at every router.

IP Options : The options field was created in order to allow features to be added into IP as time passes and requirements change. Currently 5 options are specified although not all routers support them. They are: Securtiy: It tells us how secret the information is.

In theory a military router might use this field to specify not to route through certain routers. In practice no routers support this field. Source Routing: It is used when we want the source to dictate how the packet traverses the network.

If it is not possible, the packet is dropped with an error message sent to the host. The above is the format for SSRR. For LSRR the code is Record Routing : In this the intermediate routers put there IP addresses in the header, so that the destination knows the entire path of the packet. Space for storing the IP address is specified by the source itself.

The pointer field points to the position where the next IP address has to be written. Length field gives the number of bytes reserved by the source for writing the IP addresses. If the space provided for storing the IP addresses of the routers visited, falls short while storing these addresses, then the subsequent routers do not write their IP addresses. Time Stamp Routing : It is similar to record route option except that nodes also add their timestamps to the packet. A special point of interest is that only if the IP is the same as that at the pointer then the time is entered.

The maximum value is Copy bit: It says whether the option is to be copied to every fragment or not. Broadcast Address IP address of a host is What will be the broadcast address of the subnet. A Subjects All categories General Aptitude 2. Follow gateoverflow. GATE Overflow.

Recent Blog Comments But yarunsharma Even after getting very good I believe you are too much in respect of IITD has no institutional support regarding Discussion Forum. An example of a layer that is absent in broadcast networks is: a. Physical layer b. Presentation layer c.

Network layer d. Application layer Answer: Network layer. Son : August 26, its Physical Layer. Confused About the Answer? Ask for Details Here Know Explanation? Similar Questions:. The mechanism with which several users can share a medium without interference is:.

Valid broadcast addresses would be The general network broadcast would actually broadcast to every machine on the internet, but internet routers will block all traffic from it to prevent this.

In effect if you use either The network layer is the layer that is responsible for routing packets on the network. This is the layer in which Internet protocol operates. In the seven layer OSI model, the network layer is the third layer from the bottom. There are actually 2: the network address and the broadcast address. Typically, the network address is the first address in the network and the broadcast is the last. Physical layer, Network layer and Data link layer.

Incomputer networking and telecommunications, broadcast communication network is a communication network which uses for communication between its nodes. They have a "network" of local affiliates that broadcast their programming.

Cable channels do not have affiliates. Cartoon Network! The switch connected to the sender's device recognizes the all fs MAC address as a broadcast message and hence forwards it to all its ports.

Network Layer, this layer provides the definition for the connection of two dissimilar networks. Functions of network layer are Routing, Congestion control etc. Frames are used on the data-link layer 2 layer. Packets are used at the Network layer 3 layer. Log in. Computer Networking. Study now. See Answer.