Question

1. What number is associated with the DNS server option? 2. What number is associated with the domain name? 3. What command clears the DNS cache on a Windows machine? 4. What is another name for an A record? 5. What is another name for a CNAME record?

Answer 1

1. DNS server option has configured to one or more scopes Configure the DN server contain every scope or server option used to DHCP MMC Dynamic Host Configuration protocol used to pas the additional internet to the DHSCP client side networks DHCP options include V default gateway IP address V domain Name System(DNS) server IPaddress V DNS name Numbers to connect DNS server o i). RFC868 Servers 17[4491].37 ii). Time Offset 1714491].38 iii). DNS Recursive Name Server Option 23 iv). Domain Search List 24

V A hostname is a domain name that has at least one associated IP address Internet Corporation for Assigned Names and Numbers Internet AssignedNumbers Authority has Six level domain names such a V .com net edu .org mit .gov 3 lear your DNS cache for windows 1 . Click start 2. Enter "cmd" command in the startmenu textbox 3. Right click the command prompt and select run a administrator 4. Run the command ipconfig/flushdns 5. If the command success the system returns the following message Windows IP configuration has successfully flushed the DNS Resolver cache

4. Arecord Arecord also known as HOST Record or DNS host A record used to point a domain name such as "google.com" or hosting server"74.125.224.147 5. CNAME CNAME also called as Alias Record or Canonical Name Record CNAME are used to map a sub domain such as www or mail