Network acceleration is a set of techniques used to increase the speed of information flow between the end users for imparting better network experience. It is also known as WAN optimization or WAN acceleration.Techniques involved in Network AccelerationTraffic Shaping: Priority is assigned to network traffic on whose basis bandwidth is ... Read More

By default, android provides shadow for action bar. This example demonstrates How to remove shadow below the action bar.Step 1 - Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 - Add the following code ... Read More

To remove NOT NULL restriction from column in MySQL, use ALTER command. The syntax is as follows:ALTER TABLE yourTableName MODIFY COLUMN yourColumnName dataType;To understand the above syntax, let us create a table. The query to create a table is as follows:mysql> create table NotNullDemo    -> (    -> Id ... Read More

The Simplex protocol is data link layer protocol for transmission of frames over computer network. It is hypothetical protocol designed for unidirectional data transmission over an ideal channel, i.e. a channel through which transmission can never go wrong.It is assumed that both the sender and the receiver are always ready ... Read More

You need to use GROUP BY command with aggregate function count(*) from MySQL to achieve this. The syntax is as follows:SELECT yourColumnName, COUNT(*) AS anyVariableNameFROM yourTableName GROUP BY yourColumnName;To understand the above syntax, let us create a table. The query to create a table is as follows:mysql> create table selectDistinct_CountDemo ... Read More

Positive Acknowledgement with Retransmission (PAR) is a group of error – control protocols for transmission of data over noisy or unreliable communication network. These protocols reside in the Data Link Layer and in the Transport Layer of the OSI (Open Systems Interconnection) reference model. They provide for automatic retransmission of ... Read More

In MySQL, convert datetime to integer using UNIX_TIMESTAMP() function. The syntax is as follows:SELECT UNIX_TIMESTAMP(yourDatetimeColumnName) as anyVariableName FROM yourTableName;To understand the above syntax, let us create a table. The query to create a table is as follows:mysql> create table DatetimeToInteger    -> (    -> Id int NOT NULL AUTO_INCREMENT, ... Read More

To renew a distribution certificate on mac we’ll have to go through a series of steps mentioned below.Use spotlight to open keychain access on your macFrom keychain access menu select Certificate Assistant -> Request certificate from certificate Authority.Fill the information there like Name, email and choose “save to disk”.Click continue ... Read More

Negative numbers can be distinguishable with the help of extra bit or flag called sign bit or sign flag in Binary number representation system for signed numbers. It is not possible to add minus or plus symbol in front of a binary number because a binary number can have only ... Read More

You need to use TIME_FORMAT() to remove seconds from time field. The syntax is as follows:SELECT TIME_FORMAT(yourColumnName1, "%H:%i") AS anyVariableName, TIME_FORMAT(yourColumnName2, "%H:%i") AS anyVariableName FROM yourTableName;To understand the above syntax, let us create a table. The query to create a table is as follows:mysql> create table removeSecondsFromTime    -> ( ... Read More