Explanation:
An identifier is the name of a program or the names of the variables, classes, methods, namespaces or interfaces within a program that are used to identify the relevant data/info.
Typically, identifiers must start with a letter (no numbers) and must not have any spaces in them, it should indicate the meaning and usage of the element being referred and i t cannot have more than 511 characters.
An example is:
<em>int money;
</em>
<em>double accountBalance;</em>
Where money and accountBalance are the identifiers.
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Answer:
The answer is "Option 2".
Explanation:
In HTML5, text inputs use an autofocus attribute, which, when the page is loaded, uses a template to concentrate primarily on text fields. This attribute is a Boolean property that represents the HTML autofocus attribute, showing if the related <select> element will receive an output focus whenever the page loads if it is overruled by the user. An only form-associated entity can have this property specified in a text.
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Answer:
The main benefit of the ordered list is that you can apply Binary Search( O( n log n) ) to search the elements. Instead of an unordered list, you need to go through the entire list to do the search( O(n) ).
The main cost of the ordered list is that every time you insert into a sorted list, you need to do comparisons to find where to place the element( O( n log n) ). But, every time you insert into an unsorted, you don't need to find where to place the element in the list ( O(1) ). Another cost for an ordered list is where you need to delete an element, you have an extra cost rearranging the list to maintain the order.
Answer:
1) the wireless standards that can be implemented are; IEEE 802.11a, IEEE 802.11b, IEEE 802.11g and IEEE 802.11n. The pros and cons are in the attachment
2) 802.11g can be implemented in alice's restaurant. This is because it provides the fastest speed and has a wide range which will not be easily disturbed by other devices
3) Please check the attachment
4) Please check the attachment.
Explanation: