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Compare and contast controlled media access and contention-based media access control?
Controlled-based media access control is based upon having a system in place for allowing one host to transmit at a time. It is also known as deterministic method since there is a process to determine which host transmits at a certain time. No collisions exist with this type of media access control. An example would be token ring where a token is passed from host to host and when it has the token it can transmit and others do not transmit at that time. Contention-based media access control is known as non-deterministic because hosts can transmit whenever they want. CSMA/CD is an example of this. Collisions do exist.
Why collision is an issue in a random access protocol?
In random access methods, there is no access control (as there is in controlled access methods) and there is no predefined channels (as in channelization). Each station can transmit when it desires. This liberty may create collision.
Where does wireless transmit and receive signal from?
It has an access point which transmit signal to the client and receive.
What is an internal control practice to access whether commitments and obligations are bona fide needs of the appropriations charged?
TAR
What is an internal control practice used to access whether commitments and obligations are bona fide needs of appropriations charged?
TAR
What is an internal control practice used to access whether commitment and obligations are bona fide needs of the appropriations charged?
TAR
What type of access control is determined by configuring an access control list or ACL?
Discretionary Access Control
What is a software control?
"Access control" means that you control who has access to certain things - so an access control software is software that helps you achieve that.
How can you control the access to a system?
You can control the access to a system by buying or downloading certain programs. An example of a program that gives you the ability to control the access to a system is Network Access Control.
What is a access control software?
Access control software refers to systems that manage and regulate entry to physical or virtual spaces, often using authentication mechanisms like passwords, biometrics, or access cards. While it's true that access control software enhances security by limiting unauthorized access, it's crucial to acknowledge potential drawbacks. Overreliance on such software can create a false sense of security, overlooking vulnerabilities like social engineering or insider threats. Additionally, excessive reliance on access control may impede user convenience and hinder productivity. Therefore, while access control software serves a purpose, it's imperative to adopt a holistic security approach that addresses diverse threats and balances security with usability.
How to use the NFC function of a smart watch to set up an access control card?
The smart watch can set the access control card through the NFC function, and can open the door by swiping the watch next to the access control machine. The specific steps are as follows: 1.Turn on the NFC function of the smart watch and ensure that the access control machine also supports the NFC function. 2.Enter the smart watch app store and search to download the access control card app. 3.Open the access control card application and follow the prompts to set it, including the number of the access control card and the address of the access control machine. 4.After completing the settings, place the smart watch close to the card reading area of the access control machine and swipe the card to open the door. Matters needing attention: It is necessary to confirm whether the access control machine supports the NFC function first, otherwise it is not possible to use the smart watch to swipe the card to open the door. 2.When setting up an access control card, you must enter the correct access control card number and access control machine address, otherwise it cannot be used normally.". 3.Multiple access cards can be set, and you can select the corresponding access card when using it. 4.The NFC function of the smart watch needs to be turned on, otherwise it will not be able to swipe the card to open the door normally.
Difference between media access control and LLC?
* MAC sublayer(802.3): defines how to transmit data on physical layer * LLC sublayer(802.2): responsible for identifying different protocol logically & encapsulate them.
