In C++, when a function template is instantiated, it gets its own version of the function, complete with its own set of exceptions. This means that if different instantiations of the function template throw different exceptions, each instantiation will have its own set of exceptions to catch. This provides a level of type-safety during exception handling.

The seekp function is used with output file streams to set the position of the next character to be inserted into the file. It essentially moves the file pointer to a specified position, allowing for efficient and targeted writing or modifying of file contents.

The private access specifier in C++ ensures that class members are accessible only within the class they are defined and by friend functions or classes. This helps in the principle of encapsulation, keeping data and methods secure from unintended access.

Using a table of function pointers can be highly beneficial when there's a need to handle a dynamic set of conditions, especially if these conditions might be loaded from an external source or change during runtime. It allows for a more flexible and extensible approach than hard-coding numerous cases in a switch-case statement. Furthermore, it can lead to cleaner and more maintainable code in some scenarios.

Object pooling is a design pattern where a set of initialized objects are kept ready to use, rather than allocating and deallocating them on the fly. This can greatly reduce the overhead of object creation and deletion in scenarios where such operations are frequent. Other options, while useful in specific contexts, don't directly address the efficient management of object creation and deletion.

In C++, switch-case constructs don't support floating-point types for case values. This means you can't use float or double values as cases. On the other hand, if-else structures can easily handle conditions based on floating-point values.

The unsigned char data type in C++ uses 8 bits (1 byte) for storage. This means it can store values ranging from 0 to 2^8-1, which is 0 to 255.

An abstract class in C++ is a class that cannot be instantiated, meaning objects of the class cannot be created directly. Abstract classes are intended to be inherited by other classes.

Function templates are utilized primarily to enable generic programming, meaning writing code that works for multiple data types without repetition. While they may have indirect effects on execution speed or code size, using them to group unrelated types doesn't align with their primary purpose.

In C++, the char data type typically takes up 1 byte of memory, which is smaller than int, float, or double. The exact size of int can vary depending on the platform, but char is defined by the standard to always be at least 1 byte, making it the smallest of the given options.