One form of this construct exhibits optimal performance with the impossible-to-implement Bélády’s algorithm. The valgrind utility is used to debug errors with this construct. (10[1])Insufficient locality (10[1])of this construct leads to thrashing, (10[1])which involves (10[1])pages of it constantly swapping. Calling “free” twice can lead to an incorrect access of this construct called a segfault. Pointers are so named for “pointing” to this construct. (10[1])A form of this construct known as a cache can be used to reduce the number of reads and writes to this construct’s “random-access” form. For 10 points, name this construct whose size is measured in gigabytes. ■END■