Answer:
The correct answer is option (B) "{!$Setup.Url_Settings__C.URL__c}".
Explanation:
In computer programing using Visualforce, "$Setup" refers to a global merge field that gives the user access to hierarchical custom settings. In this case, the developer needs to retrieve the correct URL to access the current user's profile and display this on a Visualforce Page. "$Setup" will give the developer access to the hierarchical custom settings in Visualforce, and the command "Url_Settings__C.URL__c" will provide the root access to the current user's profile.
It's often Linux since Linux is free, but it could be Windows.
Answer:
Advantages of both circuit switched networks and TDM are given below:
Explanation:
Advantages of circuit switched network over packet switched network:
- Circuit switched network has the advantage of being physically connected and having a dedicated channel for communication between the sender and the receiver which also makes it more reliable. Packet switched networks do not have a dedicated channel hence, they are not that reliable.
- Circuit switched networks are used for voice calls because there is no timing jitter or delay in these types of networks while packet switched networks do not offer this advantage.
Advantages of TDM over FDM in a circuit switched network:
- TDM is time division multiplexing i.e. multiple information is sent in different time intervals but on the same frequency. While FDM sends information using different frequencies. So, the advantage of using TDM is that the information will be sent from the sender to the receiver using only a single frequency.
- Using TDM, bandwidth is saved because it only sends information on a single frequency unlike FDM.
- In TDM, there is low chance of interference between signals since they are sent in different time intervals from the sender to the receiver. While FDM has a higher chance of interference.
