Answer:
=DSUM(A4:D8, "Unit Cost", A1:B2)
Explanation:
From the list of given options, it's obvious that the question relates to Excel database sum function.
The correct answer among the list of options is:
=DSUM(A4:D8, "Unit Cost", A1:B2)
Where
DSUM represents the function itself
A4:D8 represents the range
"Unit cost" represents the field
and
A1:B2 represents the criteria of the function
Analysing other options:
Option 1: The equality sign (=) before excel formulas is missing
Option 2: Sum is used instead of DSUM and there's a missing bracket before the range
Option 3: There's a missing comma between the range, the field and the criteria
Hence, the last option (4) answers the question.
Answer:
a. convert the categories to numeric representations
Explanation:
Antivirus software protects your device from viruses that can destroy your data, slow down or crash your device, or allow spammers to send email through your account. Antivirus protection scans your files and your incoming email for viruses, and then deletes anything malicious
Answer:
PCM encoded samples from 24 voice band channels
Explanation:
The Multiplexer from a lot of inputs generates one single output. And it is the select line that determines which of the input is going to influence output. And the select lines determine the increase in the quantity of data that can be sent through the network in a given amount of time. And this is termed as a data selector. Please note, this is application of multiplexer in data transmission.
And now coming to the T1 carrier system, it is a time division multiplexor, which multiplexes the PCM encoded samples coming from 24 band channels that require to be transmitted over an optical fiber or single metallic wire pair. And for this question, we need what is being multiplexed, and that is as mentioned in the Answer section.
Random Access memory(RAM) stores data temporary until the computer is switched off