Application Layer Question Pool

1. In the Mosaic system, what is an URL?
2. What is the purpose of the Domain Name System?
3. Name and explain rsh.
4. The OSI Application layer contains:
   • compilers and libraries.
   • all programs users use.
   • code to provide data services
   • code to manage the network.
5. In the client-server model, applications can only be run on the client.
   Circle One: T F
6. Fill in the blank:
   The ____________ layer provides services to users in the OSI environment.
7. Identify the OSI layer (by number) associated with each of the following protocols:
   • RPC
   • XDR
   • TP4
   • ASN.1
   • FTAM
8. In OSI layering, a SASE is above / below (choose one) the CASE.
9. There are three types of Distributed Systems control protocols. List the correct one beside each example protocol below.
   • SNMP ______________
   • RIP ______________
   • DNS ______________
10. There is at least one clear reason (of those presented in class) why one would always select a Distributed System.
    T F (circle one)
11. List two of the design goals for a Distributed System.
12. One disadvantage of a distributed system (versus a non-distributed system of similar power) is: {select most disadvantageous}
    • security.
    • per-job performance
    • system reliability
    • cost.
13. One advantage of a distributed system (versus a non-distributed system of similar power) is: {select most advantageous}
    • security.
    • per-job performance
    • system reliability
    • cost.
14. Fill in the blank FTP, TELNET and Email are found at the ____________ layer.
15. Explain the difference between client-server and master-slave distributed architectures.
16. X.400 is similar in function to which Internet protocol?
    • SNMP
    • SMTP
    • DNS
    • NIS
17. What does the acronym CASE stand for?
18. The ISO protocol similar to ftp is ____________.
19. What is the primary purpose of the DNS?