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. Insufficient locality of this construct leads (10[1])to thrashing, (-5[1])which involves pages of it constantly swapping. Calling “free” twice can lead to an incorrect access of this construct (10[1])called (10[1])a segfault. Pointers (-5[1])are so named for “pointing” to this construct. (10[1]-5[1])A form of this construct known as a cache (10[1])can be used to reduce the number (10[1])of reads and writes to this construct’s “random-access” form. For 10 points, name this construct whose size is measured in gigabytes. ■END■ (10[3])