The definition for latency is simple: Latency = delay. Itâs the amount of delay (or time) it takes to send information from one point to the next. Latency is usually measured in milliseconds or ms. Itâs also referred to (during speed tests) as a ping rate.
VLOOKUP is a powerful Excel function that allows you to look for a specified value in one column of data inside a table, and then fetch a value from another column in the same row.
Excel's VLOOKUP function, which stands for vertical lookup, can be used to look up specific information located in a table of data or database. VLOOKUP normally returns a single field of data as its output. How it does this is: 1  You provide a name or Lookup _value that tells VLOOKUP in which row or record of the data table to look for the desired information. 2  You supply the column number - known as the Col_index_num - of the data you seek. 3  The function looks for the Lookup _value in the first column of the data table.