Answer:
The Transport Layer Security (TLS) protocol adds a layer of security on top of the TCP/IP transport protocols. TLS uses both symmetric encryption and public key encryption for securely sending private data, and adds additional security features, such as authentication and message tampering detection
 
        
             
        
        
        
Answer:
 a good algorithm must be able to accept a set of defined input. Output: a good algorithm should be able to produce results as output, preferably solutions. Finiteness: the algorithm should have a stop after a certain number of instructions. Generality: the algorithm must apply to a set of defined inputs.Explanation:
 
        
             
        
        
        
Answer:
option C
Explanation:
The correct answer is option C
the uploaded image shape is ( 433 , 650 )
this shape means that the image is a grayscale image which is 433 pixels high by 650 pixels wide.
a gray scale image is  in white and black color.
433 pixels high by 650 pixel wide means that the image is formed with the combination of 433 vertical dots and 650 horizontal dots.
Resolution of an image can be found out by the  pixels present in the images.
higher the pixel higher is he resolution of the image. 
 
        
             
        
        
        
Answer:
c
Explanation:
The biggest advantage of smartphones and tablets is that they increased the mobility. This allowed users to access the social media platforms whenever they want. The users can login to their accounts even they are travelling by bus or walking around. This was not possible back in the days where people mostly use desktop computers. 
 
        
             
        
        
        
Answer:
Total Memory= 4 KB = 4096 bytes = 32768 bits
Explanation:
<em><u>1. Data lines are 8 From D0 to D7</u></em>
so
Total memory at single address locations is 8 bits.
<em><u>2. Address lines are 12 (A0 to A11)</u></em>
There are 12 address lines but 3 out 12 are for selction of chip or memory bank.
so only 9 pins are there to address the locations on one chip.
Total No. of address locations on single chip = 2^9 = 512 locations
as 1 location is 1 byte so total memory of single chip is 512 bytes.
<u><em>3. Total Memory Bank </em></u>
There are total 3 selection pins for memory bank.
 so
Total chips = 2^3 = 8.
<em><u>4. Total Memory </u></em>
Total size of 1 chip = 512 bytes
Total size of 8 chip = 8x512 bytes = 4096 bytes = 4096/1024 kb = 4 kb
<em>So total memory of system is 4 Kb = 4096 bytes = 32768 bits</em>