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COP4600 FINAL EXAM STUDY GUIDE (A NEW UPDATED VERSION) LATEST COMPLETE ACTUAL EXAM REAL QUESTIONS AND CORRECT DETAILED ANSWERS (CORRECT VERIFIED ANSWERS) |ALREADY GRADED A+ (REVISED EXAM)$20.49
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COP4600 FINAL EXAM STUDY GUIDE (A NEW UPDATED VERSION) LATEST COMPLETE ACTUAL EXAM REAL QUESTIONS AND CORRECT DETAILED ANSWERS (CORRECT VERIFIED ANSWERS) |ALREADY GRADED A+ (REVISED EXAM)
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Course
COP4600
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COP4600
COP4600 FINAL EXAM STUDY GUIDE (A NEW UPDATED VERSION) LATEST COMPLETE ACTUAL EXAM REAL QUESTIONS AND CORRECT DETAILED ANSWERS (CORRECT VERIFIED ANSWERS) |ALREADY GRADED A+ (REVISED EXAM)
COP4600 FINAL EXAM STUDY GUIDE (A NEW UPDATED
VERSION) LATEST 2024-2025 COMPLETE ACTUAL EXAM
REAL QUESTIONS AND CORRECT DETAILED ANSWERS
(CORRECT VERIFIED ANSWERS) |ALREADY GRADED A+
(REVISED EXAM)
What is a path?
Answer- A path is a sequence of directories used to reference a file.
They can be relative or absolute.
Why do we need file systems?
Answer- 1. Locate free storage space
2. Store information in a persistent way (survives process termination)
3. Allow more than one process to access the information store
concurrently
4. Find information by human-accessible identifiers
5. Protect data from unauthorized use
6. Identifying types of data stored and programs that can read the data
How are directories implemented?
,Answer- Directories can be implemented in-line or via reference ->
Variable attribute/name size
Why do we mount filesystems?
Answer- We mount a file system to make it accessible to programs
through the operating system.
When accessing a file system on a device, we need to know?
Answer- boot block, Filesystem type/organization (super block), and
where the root directory is
What is in the filesystem superblock?
Answer- The file system superblock holds information about its type,
format, and organization
What happens when you make a mounting call in Unix
,Answer- Copies the Superblock from the disk being mounted to the
superblock table in main memory.
Sets pointers in the directory inode to FS mounted
What are the approaches to file allocation?
Answer-1. Contiguous allocation (all-in-a-row)
2. Linked list allocation (block)
3. Chained table allocation (FAT)
4. Indexed allocation (index nodes)
5. Chained indexed allocation (index + linked list)
6. Multi-level indexed allocation (tree structure)
Hardware is an abstraction that provides two main operations
Answer- 1. Read block at index "k"
2. Write block at index "k"
3. Allocate and Deallocate
, Contiguous allocation
DEFINITION: A file's contents are stored purely in order on the drive
CONS: suffers from external fragmentation, because it is a contiguous
approach to system memory
Linked List Allocation
DEFINITION: Each block holds a pointer to the next. Requires iteration
through drive blocks (drive accesses) for random access
CONS: Problematic in large files; App has to iterate through each node.
Chained Table Allocation
DEFINITION: Chain store the linked list as a table in memory to
minimize disk access. It is called a File Allocation Table (FAT)
Indexed Allocation
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