The above question has multiple choices as below
A. Data links
B. The post office
C. Driving a car
D. A train
The answer is (B) The Post Office.
In layman’s terms, transport layer is similar to the post office functions of delivering parcels and letters at the agreed delivery deadlines. It also notices any dropped info and re-transmits it.
Just like the post office, the transport layer directs messages and information between specific end users. If by mistake you write a letter to the wrong person, the letter will be returned and the postal employee will stamp it as address unknown.
The format for the UPDATE command is the word UPDATE, followed by the name of the table to be updated. The next portion of the command consists of the word <u>SET</u>, followed by the name of the column to be updated, an equals sign, and the new value.
Explanation:
- An Update Query is an action query (SQL statement) that changes a set of records according to criteria you specify.
- The SQL UPDATE Query is used to modify the existing records in a table. You can use the WHERE clause with the UPDATE query to update the selected rows, otherwise all the rows would be affected.
- Update Queries let you modify the values of a field or fields in a table.
<u>UPDATE Syntax
</u>
- UPDATE table_name
- SET column1 = value1, column2 = value2, ...
- WHERE condition;
UPDATE table_name SET column1 = value1, column2 = value2, etc WHERE condition;
- table_name: name of the table
- column1: name of first , second, third column....
- value1: new value for first, second, third column....
- condition: condition to select the rows for which the
- values of columns needs to be updated.
Answer:
TLS
Explanation:
In the field of computer security, TLS refers to Transport Layer Security it is closely related to the Secure Sockets Layer (SSL) although TLS is more commonly used these days. They are both techniques in cryptography that provides for the safe transfer of information between two parties (servers, systems and user applications)
TLS particularly provides a balance between transmission speed and data security through the use of symetric and asymmetric cryptography and the encryption and decryption key is the session key at both ends (sender and reciever), as such TLS has found usage in most advanced data exchange systems like credit card processing and online banking.
Unicode was invented to create a "universal text", or a language framework that any computer or device could understand.
