Polling access method

Polling is a method of controlling the access to a transmission medium which is shared by a number of stations. A station is a user requesting service. Polling techniques have been widely used in inquiry - response networks. In polling networks, a controller is required to either initiate or to carry out the polling.

1. What is polling in mobile communication?
2. What is polling and token passing?
3. What is polling give its drawbacks?
4. What are the principles of access protocols?
5. What is reservation in DCN?
6. What is polling used for?
7. What is polling method in microcontroller?
8. What is polling in API?
9. What are control access methods?
10. What is a demand priority in networking?
11. What type of protocol is token passing?
12. Why polling is better than interrupt?
13. What is the difference between polling and interrupts?
14. What is polling IP address?

What is polling in mobile communication?

In electronic communication, 'polling' is the continuous checking of other programs or devices by one progam or device to see what state they are in, usually to see whether they are still connected or want to communicate.

What is polling and token passing?

On a local area network, token passing is a channel access method where a packet called a token is passed between nodes to authorize that node to communicate. In contrast to polling access methods, there is no pre-defined "master" node.

What is polling give its drawbacks?

Disadvantages of Polling and Interrupt

Disadvantages of polling are the standby time of some devices that is shorter than the response time and then another method of transmission should be applied, as well as that the CPU consumes unnecessary time to check devices that have not searched for data transfer.

What are the principles of access protocols?

The objectives of multiple access protocols are optimization of transmission time, minimization of collisions and avoidance of crosstalks.

What is reservation in DCN?

Reservation protocols are the class of protocols in which the stations wishing to transmit data broadcast themselves before actual transmission. ... In the contention period, each station broadcasts its desire for transmission.

What is polling used for?

Polling is the process where the computer or controlling device waits for an external device to check for its readiness or state, often with low-level hardware. For example, when a printer is connected via a parallel port, the computer waits until the printer has received the next character.

What is polling method in microcontroller?

In polling, the microcontroller continuously monitors the status of a given device and executes the task the device needed when the status will satisfy the condition. ... After that, it moves on to monitor the next device until each one is served.

What is polling in API?

APIs commonly require a client to send a request to the server to receive new data; that is, the page requests data from the server. ... This pattern is known as polling and is a common solution for clients that need to become aware of new data or notified of backend events.

What are control access methods?

Access Control Methods-

Access control methods are the methods used for providing access control. They prevent the collision or deal with it and ensures smooth flow of traffic on the network. They are implemented at the data link layer of the OSI reference model.

What is a demand priority in networking?

Demand priority is a media-access method used in 100BaseVG, a 100 megabit per second (Mbit/s) Ethernet implementation proposed by Hewlett-Packard (HP) and AT&T Microelectronics, later standardized as IEEE 802.12. Demand priority shifts network access control from the workstation to a hub.

What type of protocol is token passing?

Bit-map protocol is a collision free protocol that operates in the Medium Access Control (MAC) layer of the OSI model. It resolves any possibility of collisions while multiple stations are contending for acquiring a shared channel for transmission.

Why polling is better than interrupt?

Advantages of Interrupt over Polling. The first advantage is- the performance of microcontroller is far better in Interrupt method than Polling Method. In polling method, the microcontroller is checking continuously whether the device is ready or not, but the chances of data loss are greater in Polling than Interrupt.

What is the difference between polling and interrupts?

The main difference between interrupt and polling is that in interrupt, the device notifies the CPU that it requires attention while, in polling, the CPU continuously checks the status of the devices to find whether they require attention. In brief, an interrupt is asynchronous whereas polling is synchronous.

What is polling IP address?

Ping polling determines the availability of a network device or interface by using an ICMP echo request. The ping process ensures that a device is still present, live, and can be contacted in the network by periodically sending an ICMP packet to an IP address and waiting for a response.