A banquet is being planned for 100 people. It is your job to expand a recipe for White Bean and Sausage Rigatoni from the original yield of 5 servings up to 100 servings. The original recipe calls for 1 15-ounce can ( 2 cups) of cannellini beans. How many number 10 cans of beans are needed for the expanded recipe? (1 number 10 can contains approximately 12 cups of beans). Show answer.

A refrigerator was purchased for $80,000\$80,000 and is expected to have a useful life of 10 years, with an estimated salvage value of $10,000\$10,000 at the end of its useful life. Calculate the annual depreciation expense for this refrigerator using the straight-line method.

In p6, a user program wants to read the value of an xattr but does not know how large the value is. Which strategy does fgetxattr support for this?

In RAID-5, a small random write requires 4 disk I/Os using the subtractive (read-modify-write) parity method: read old data, read old parity, write new data, write new parity.

What is the main disadvantage of fsck as a recovery strategy compared to journaling?

Consider the following code executed by a single process on a Unix-like system: int fd1 = open(“file.txt”, O_RDONLY); // returns 3 int fd2 = open(“file.txt”, O_RDONLY); // returns 4 read(fd1, buf, 100); read(fd2, buf, 50); After both reads complete, what are the file offsets associated with fd1 and fd2?

A file system uses 256-byte inodes and 4 KB disk blocks (so 16 inodes fit in each block of the inode table). Within the inode table, where does inode number 40 live?

In LFS, when a data block is written to disk, the inode that points to that data block is written to the same segment.

In p6, you repurpose one of the inode’s direct block pointers (addrs[]) as the xattr directory block. Existing kernel functions such as bmap, readi, and writei walk addrs[] and must not see the repurposed slot, or a user read() could leak the xattr directory block as file data. What is the cleanest way to hide the slot from those functions?

What is the primary motivation for RAID-5 rotating parity across all disks, rather than keeping it on a single dedicated disk like RAID-4?