Computer Science

To AutoFit the width of a column in spreadsheet software like Excel, you double-click the right border of the column header. This action automatically adjusts the column width to fit the content.

The keyboard shortcut Ctrl + U is commonly used to underline selected text in many text editing programs. Therefore, option A (underline) is the correct answer.

Programs run by a computer are called software, which is distinct from the physical components known as hardware. Software includes all the instructions and data that tell the hardware what to do.

Facebook was rebranded as Meta in October 2021 to reflect its focus on building the metaverse. Therefore, the correct new name is Meta.

Mark Zuckerberg, the co-founder of Facebook, was indeed the first person to upload his face on the platform. When Facebook (originally called TheFacebook) was launched in 2004, Zuckerberg posted his own photo as the inaugural profile image. This is well documented in multiple reliable sources including Wikipedia and historical accounts of Facebook's founding.

A nibble is defined as 4 bits, which is half of a byte (8 bits). Therefore, the correct answer is 4 bits.

Google was officially founded on September 4, 1998, by Larry Page and Sergey Brin while they were Ph.D. students at Stanford University.

ECL stands for Enterprise Control Language, which is a declarative, data-centric programming language designed for large-scale data processing on HPCC (High-Performance Computing Cluster) systems. It is used for efficient query construction and parallel execution in enterprise-grade computing environments. The other options do not correctly define the acronym ECL in the context of computer science or security.

The Melissa virus, which emerged in 1999, was a macro virus that infected Microsoft Word documents and spread via email. While it propagated through email, its core mechanism was a macro virus embedded in documents, making option B the most accurate.

The extended ASCII coding system uses 8 bits, allowing for 2^8 = 256 different characters, which is an extension of the original 7-bit ASCII that supports 128 characters.