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Question 4. This question concerns naming and discovery in distributed systems. a. Explain briefly how the database servers in Figure 1 could use network multicast to allow a local client such as Client 1 to discover them even if it had no other information about them. b. Each of the hosts in Figure 1 has a public (routable) IP address and a unique domain name (as shown). In addition the domain name "database.distsys.com" can be used to distribute requests to all of the hosts. What DNS records are required and why? c. Discuss whether or not the company with the domain distsys.com should pay a commercial DNS provider or operate their own DNS servers. Which would you recommend and why?

Question 4. This question concerns naming and discovery in distributed systems. a. Explain briefly how the database servers in Figure 1 could use network multicast to allow a local client such as Client 1 to discover them even if it had no other information about them. b. Each of the hosts in Figure 1 has a public (routable) IP address and a unique domain name (as shown). In addition the domain name "database.distsys.com" can be used to distribute requests to all of the hosts. What DNS records are required and why? c. Discuss whether or not the company with the domain distsys.com should pay a commercial DNS provider or operate their own DNS servers. Which would you recommend and why?

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Host: A (hosta.distsys.com) Process: Client 1 Process: Database Server 1 Host: B (hostb.distsys.com) Process: Database Server 2 LAN Host: C (hostc.distsys.com) Process: Database Server 3 Internet (via router)
Transcribed Image Text:Host: A (hosta.distsys.com) Process: Client 1 Process: Database Server 1 Host: B (hostb.distsys.com) Process: Database Server 2 LAN Host: C (hostc.distsys.com) Process: Database Server 3 Internet (via router)
Question 4. This question concerns naming and discovery in distributed systems. a. Explain briefly how the database servers in Figure 1 could use network multicast to allow a local client such as Client 1 to discover them even if it had no other information about them. b. Each of the hosts in Figure 1 has a public (routable) IP address and a unique domain name (as shown). In addition the domain name "database.distsys.com" can be used to distribute requests to all of the hosts. What DNS records are required and why? c. Discuss whether or not the company with the domain distsys.com should pay a commercial DNS provider or operate their own DNS servers. Which would you recommend and why?
Transcribed Image Text:Question 4. This question concerns naming and discovery in distributed systems. a. Explain briefly how the database servers in Figure 1 could use network multicast to allow a local client such as Client 1 to discover them even if it had no other information about them. b. Each of the hosts in Figure 1 has a public (routable) IP address and a unique domain name (as shown). In addition the domain name "database.distsys.com" can be used to distribute requests to all of the hosts. What DNS records are required and why? c. Discuss whether or not the company with the domain distsys.com should pay a commercial DNS provider or operate their own DNS servers. Which would you recommend and why?
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