DNS and DHCP

  1. What does DNS and DHCP stand for?
    • Dynamic Name Service
    • Dynamic Host Configuration Protocol
  2. What is the solution for IP addresses of devices that change, such as with ISP providers changes?
    Dynamic DNS which is software that monitors your IP addresses for changes and notifies your DNS provider.
  3. What does URL stand for?
    Uniform Resource Locator
  4. How does a workstation obtain IP address information from a DHCP server?
    • 1. DHCP client sends a BCST message (DHCPDiscover message) to discover the DHCP server.
    • 2. When a DHCP server receives a DHCPDiscover message it responses with a Unicast DHCPOffer response--Because the offer was sent as a BCST multiple DHCP servers may respond but the client often selects the server the sends the first DHCPOffer.
    • 3.  DHCP client communicates with the selected server by sending a unicast DHCPRequest asking the DHCP server to provide IP configuration parameters.
    • 4.  DHCP servers respond to the client with a unicast DHCPAck message which contains a collection of IP configuration parameters.
  5. Most DHCP client devices on a network are dynamically assigned an IP address from the DHCP server (that is, dynamic addressing). However, some devices (for example, servers) might need to be assigned a specific IP address. What DHCP feature allows a static IP address to MAC address mapping?




    B) Scope
  6. NetBIOS uses what type of name space?




    B) Flat name space
  7. The DNS root directory is represented by what symbol?




    C) . (dot)
  8. What command do you run to see the DNS cache on a Windows system?




    D) ipconfig /displaydns
  9. The users on your network haven't been able to connect to the server for 30 minutes. You check and reboot the server, but you're unable to ping either its own loopback address or any of your client systems.  What should you do?




    A) Replace the NIC on the server because it failed.
  10. A user calls to say she can't see the other systems on the network when she looks in My Network Places. You are not using NetBIOS. What are your first two troubleshooting steps? (select two).




    B) Ping the loopback address to test her NIC and ping several neighboring systems using both DNS names and IP addresses.
  11. What is checked first when trying to resolve an FQDN to an IP address?




    D) host file
  12. Which type of DNS record is used by mail servers to determine where to send e-mail?




    C) MX record
  13. Running which command enables you to reset the DNS cache?




    A) ipconfig /flushdns
  14. Running which command enables you to query the functions of a DNS server?




    B) nslookup
  15. Where does DNS server store the IP addresses and FQDNs for the computers within a domain?




    D) Forward lookup zone
Author
peeojay
ID
319078
Card Set
DNS and DHCP
Description
DNS and DHCP Servers
Updated