Final Review Andy Wang Operating Systems COP 4610
- Slides: 19
Final Review Andy Wang Operating Systems COP 4610 / CGS 5765
Coverage n n n Total: 97 points; 1 min / point 37 points based on lectures 17 -31, assignment 9, and project 3 60 points for lectures 1 -16 ¡ 5 points based on your ability to apply various principles learned in the class
File Systems and Disk Management n Definitions ¡ ¡ File header
File Systems and Disk Management n Short answers ¡ File system components n ¡ Ways to access a file n ¡ Disk management, naming, protection, reliability Sequential, random, content-based File usage patterns
File Systems and Disk Management n Short answers ¡ Disk allocation policies n Contiguous, link-list, segment-based, indexed, multilevel indexed, hashed
Naming and Directories n Definitions ¡ ¡ ¡ i_node Directory Name collisions Absolute path name Path resolution
Naming and Directories n Short answers ¡ Different ways to organize a name space n n n Flat name space Hierarchical name space Relational name space Contextual naming Content-based naming
Transactions and Reliability n Definitions ¡ ¡ ¡ Metadata fsck Log Two-phase locking Striping
Transactions and Reliability n Short answers ¡ ¡ Characteristics of a transaction RAID levels
Protection and Security n Definitions ¡ ¡ ¡ Security Protection Access matrix Access control list Capability list
Protection and Security n Short answers ¡ Three goals of security n ¡ Three security components n ¡ ¡ confidentiality, data integrity, system availability authentication, authorization, enforcement Kerberos protocol Public key encryption
Protection and Security n Short answers ¡ Classes of security problems n Eavesdropping, abuse of privilege, imposter, Trojan horse, salami attack, logic bomb, denial-of-service attacks
Network Protocols n Definitions ¡ ¡ Protocols Port Byzantine uncertainty Two-phase commit
Network Protocols n Short answers ¡ ¡ ¡ Internet protocol Unreliable data protocol Transmission control protocol
Networks and Distributed Systems n Definitions ¡ ¡ ¡ Distributed systems Network Packet Arbitration Routing
Networks and Distributed Systems n Short answers ¡ Ethernet arbitration techniques n ¡ carrier sensing, collision detection, adaptive randomized waiting Point-to-point vs. broadcast network
RPC and Distributed FS n Definitions ¡ ¡ ¡ Location transparency Microkernel operating systems Procedure stubs
RPC and Distributed FS n Short answers ¡ ¡ Advantages of using RPC for IPC Design principles of NFS vs. AFS x. FS design principles
Project 3 n Short answers ¡ Steps to obtain the content of a FAT entry
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