Which command adds or sets a registry value?

• A. reg export [keyname]
• B. reg query [keyname]
• C. reg add [keyname] /v [valuename] /t [type] /d [data]
• D. reg delete [keyname]

Answer: (C)

Adding or setting a registry value is done with the reg add command. The reg suite includes reg add, reg query, reg delete, and reg export, where reg add specifically creates or updates a value. The syntax reg add [keyname] /v [valuename] /t [type] /d [data] shows you provide the key path, the value name, the data type (like REG_SZ, REG_DWORD), and the data to store. If the value doesn’t exist, reg add creates it; if it does exist, reg add updates it. You can add /f to overwrite without a prompt. For example: reg add "HKLM\Software\Example" /v Version /t REG_SZ /d "1.2" /f.