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Server 2008
Chapter 8 DHCP & DNS
58
Computer Networking
Undergraduate 1
05/24/2013

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Term
What does DHCP do?
Definition
It is a TCP/IP standard for simplifying the management of IP configuration assignments.
Term
What are some benefits of using DHCP over static IP addresses?
Definition
The DHcp services supplies all the necessary configuration information automatically. Valid IP addressing from a database ensures correct configuration. DHCP will automatically reconfigure the TCP/IP information for a moved computer to reflect the new subnet.
Term
What are the 4 steps involved in the DHCP lease process?
Definition
-DHCP Discover - broadcast message is first sent from a client requesting location of a DHCP server on the network.

-DHCPOFFER- is a message sent back to the client from all DHCP servers that received the request.

-DHCPREQUEST- occurs after the client receives the DHCPOFFER and has accepted the first IP received.

-DHCPACK- is the final step in a successful DHCP lease process occurring when the DHCP server is issuing the accepted offer, sends a successful acknowledgement to the client.
Term
Describe what happens if there are multiple NIC card installed in a client.
Definition
Both adapter must be assigned different IP addresses.
Term
If there is 50% or less lease time left, the client will PING its_____ to ensure that it is still on the same subnet.
Definition
Default Gateway
Term
What happens if the client is shutdown when its lease expires?
Definition
DHCP server might assign that IP address to a different client.
Term
What commands can be used to manually renew and release a DHCP lease?
Definition
-ipconfig /renew
-ipconfig /release
Term
What type of Windows OSs can run Microsoft DHCP service?
Definition
Microsoft Windows Server OS
Term
What must be installed and configured?
Definition
DHCP Service
Term
What must be true about the IP address of the DHCP server?
Definition
Statically Configured
Term
What is a scope?
Definition
It is a pool of valid IP addresses available for lease to DHCP clients and must be created before the server can lease IPs to clients.
Term
Must a DHCP scope be activated before it can assign IPs?
Definition
YES
Term
Must a DHCP server be authorized with AD services?
Definition
YES
Term
What console is used to install the DHCP Server role?
Definition
Server Manager Console
Term
What console can be used to configure DHCP?
Definition
DHCP Console
Term
How is the range of IP addresses for a scope configured?
Definition
-Start IP address
-End IP address
Term
Describe Excluded IP addresses within a scope.
Definition
IPs configured statically that overlap a scope's IP address range. Exclude those IPs from the scope, so duplicate IPs are not assigned.
Term
Select the______ DHCP lease option if you want to assign permanent IP addresses to ALL clients that receive their IP address from the scope.
Definition
Unlimited
Term
You can also create______on a per-client basis, so that the server always assigns a specific client a specific IP address within a scope
Definition
Client Reservation
Term
Can you create multiple scopes on a DHCP server for the same subnet?
For different subnets?
Definition
-NO
-YES
Term
How do you configure a client to use DHCP(what radio button must be selected?)
Is this the default for Microsoft OSs?
Definition
-Obtain an IP address automatically
-YES
Term
What happens if a new client configured for DHCP cannot find a DHCP server on the network?
Definition
Auto configuration and it assigns itself a non-routable IPv4 address.
Term
The first two octets of an Autoconfiguration IPv4 addresses are?
Definition
169.254
Term
How would you configure a static IPv4 address for a Windows computer?
(What radio button must be selected?)
Definition
Use the following IP address
Term
What is DNS?
Definition
It is a distributed database in TCP/IP networks to translate computer names to IP addresses and vice-versa.
Term
Is DNS onlu sued on the internet?
Definition
NO
Term
Describe the root domain?
Definition
It is at the top of the hierarchy and is represented as a period.
Term
Top-level domain?
Definition
Are the two and three-character name codes that are organized by organization type or geographical location.
Term
Second-level domain?
Definition
This level is relative to the top-level domain.
Term
Identify each section of the following
(computer1.sales.microsoft.com.
Definition
-computer1 = hostname
-sales = private internal subdomain
-microsoft = second level
-com = top level
-period = root
Term
What is the full name called?
Definition
FQDN
Term
What is a DNS zone?
Definition
A DNS zone is a portion of a domain name space using the Domain Name System (DNS) for which administrative responsibility has been delegated
Term
A zone must contain a ______ domain namespace.
Definition
Contiguous
Term
the name-to-IP address mappings for a zone are stored in a _______.
Does it contain names and IPs of devices outside its zone?
Definition
Zone database file
-NO
Term
A zone database file may contain references to_____outside its zone, so that name resolution requests can be forwarded up and down the namespace.
Definition
DNS name servers
Term
Describe a DNS name server.
Definition
Stores a copy of the zone database file.
Term
Describe forward lookup queries.
reverse lookup queries.
Definition
-Resolves a name to an IP address.
-Resolves an IP address to a name.
Term
Must you have at least one forward lookup zone configured for a DNS server to work?
Definition
YES
Term
List three main types of zones that you can create on a Server 2008.
Definition
-Primary
-Secondary
-Stub
Term
Describe a primary zone.
Definition
Creates a copy of a zone that can be updated directly on this server.
Term
Describe a secondary zone.
Definition
Creates a copy of a zone that exists on another server.
Term
Describe a zone transfer.
Definition
It is similar to AD replication of updates/changes made to an AD database between domain controllers.
Term
Zone transfers are done from a ______ zone to _____ zones.
Definition
-Primary
-Secondary
Term
Describe an Active Directory-integrated DNS zone.
Definition
You can configure a list of authorized servers that can initiate dynamic updates; these can include secondary name servers, domain controllers, and DHCP servers.
Term
Describe a standard zone.
Definition
Database file is the primary/master writeable copy of a zone that is stored in as standard text file.
Term
Standard zone database files are stored ____ in files.
Definition
Standard Text
Term
What are resource records?
Definition
They are individual entries in the zone database file.
Term
SOA
Definition
Identifies which name server is the most authoritative for the zone. Must be the very first record.
Term
NS
Definition
One for each name server in the zone.
Term
A
Definition
Associates a host name to its IPv4 address(forward lookup)
Term
AAAA
Definition
Associates a hostname to its IPv6 address(forward lookup)
Term
PTR
Definition
Associates an IP address to a host name.
Term
MX
Definition
routes emails sent to a domain name to the specified mail exchanger.
Term
SRV
Definition
Associates services to servers where they are located(kerberos and gc)
Term
Describe Dynamic DNS(DDNS)
Is it required for an Active Directory-Integrated zone?
Definition
Clients can automatically update the zone database files.
-YES
Term
How do you configure a client to use DNS?
Definition
TCP/IP must be installed on a client before it can be configured.
Term
Describe the nslookup utility.
Definition
Allows a host to make direct DNS queries to DNS servers.
Term
What two typesof queries can be performed using DNS console?
Definition
-A simple query
-A recursive query
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