IT 240 / Week 5 / Discussion Questions

ASSIGNMENTS

1. Read the “Storage Area Network” section through the “DNS Server” section in Ch. 8, “Network Operating System Fundamentals,” of Guide to Networking Essentials.

2. Read the “Managing User and Group Accounts” section through “User Profiles,” section in Ch. 9, “Server Management and Administration,” of Guide to Networking Essentials.

3. Read Ch. 4, “The Internet,” of Business Data Communications.
4. Read section 20.3 in Ch. 20, “Network Management,” of Business Data Communications.

Discussion Question 1

Due Date: Day 4 [Main] forum.

Post your response to the following: What is DNS? How do users benefit from it? Provide a brief description of the DNS process to resolve a URL to its IP address.

DNS stands for Domain Name System and essentially operates like a phone book. It keeps a list of computer names and IP addresses. Instead of typing a numerical address into his or her web browsers address bar, a user can input the name of the computer (www. hotmail. com). The request is forwarded to the users computers DNS client, and from there to the DNS server, which then forwards the user to that specific address. For users who are not mathematically inclined, it is easier to remember and input the name of a computer than it is to remember and input all of the numbers and decimals in an IP address. Also, there is no reason for DNS to rely on TCp because usually, only a single data packet is used to send messages. So instead, it uses the User Datagram Protocol (UDP) Transport Layer.

Reference: Chapter 5, Page 228 ((22 of 54))

((Note to readers: The above answer has already been used verbatem -word for word. Please put the above answer in your own words.))

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Discussion Question 2

Due Date: Day 4 [Main] forum.

SNMP is a protocol for network