Question

Для груп­по­вых опе­ра­ций с фай­ла­ми ис­поль­зу­ют­ся мас­ки имён фай­лов. Маска пред­став­ля­ет собой по­сле­до­ва­тель­ность букв, цифр и про­чих до­пу­сти­мых в име­нах фай­лов сим­во­лов, в ко­то­рых также могут встре­чать­ся сле­ду­ю­щие сим­во­лы: Сим­вол «?» (во­про­си­тель­ный знак) озна­ча­ет ровно один про­из­воль­ный сим­вол. Сим­вол «*» (звёздоч­ка) озна­ча­ет любую по­сле­до­ва­тель­ность сим­во­лов про­из­воль­ной длины, в том числе «*» может за­да­вать и пу­стую по­сле­до­ва­тель­ность. Опре­де­ли­те, какое из ука­зан­ных имён фай­лов удо­вле­тво­ря­ет маске: ??pri*.?* Выберите один ответ: 1. pripri.txt 2. napri.q 3. privet.doc 4. 3priveta.c

Answer 1

Тут правилен 1 ответ pripri.txt

Answer 2

#### File Name Mask and Matching When performing group operations with files, file name masks are used to specify a pattern for matching file names. A file name mask is a sequence of letters, numbers, and other permissible characters that can also include the following symbols: - The symbol "?" (question mark) represents exactly one arbitrary character. - The symbol "*" (asterisk) represents any sequence of characters of arbitrary length, including an empty sequence. Based on the given file name mask "??pri*.?*", we need to determine which of the following file names satisfy the mask: 1. pripri.txt 2. napri.q 3. privet.doc 4. 3priveta.c To determine the matching file names, we can analyze the file name mask and compare it with each file name. #### Matching File Names Let's analyze the file name mask "??pri*.?*" and compare it with each file name: 1. **pripri.txt**: This file name matches the mask because it has exactly two characters before "pri", followed by any sequence of characters, and ends with a dot followed by any sequence of characters. 2. **napri.q**: This file name does not match the mask because it does not have exactly two characters before "pri". 3. **privet.doc**: This file name does not match the mask because it does not have exactly two characters before "pri". 4. **3priveta.c**: This file name does not match the mask because it does not have exactly two characters before "pri". Therefore, the only file name that satisfies the given file name mask "??pri*.?*" is **pripri.txt**. Please let me know if there is anything else I can help you with!