1.
Question
1. What Is Dns?
Domain Name System is a
service that can be installed on any windows server operating system to resolve
the Name to IPAddress and vice-versa. TCP/IP networks, such as the Internet,
use DNS to locate computers and services through user-friendly names.
2.
Question
2. What Is Ddns?
Dynamic DNS or DDNS is a
method of updating, in real time, a Domain Name System to point to a changing
IP address on the Internet. This is used to provide a persistent domain name
for a resource that may change location on the network.
3.
Question
3. What Are The Resource Records In Dns?
A (Address) Maps
a host name to an IP address. When a computer has multiple adapter cards and IP
addresses, it should have multiple address records.
CNAME (Canonical Name) Sets an alias for a host name. For example,
using this record, zeta.tvpress.com can have an alias as www.tvpress.com.
MX (Mail Exchange) Specifies a mail exchange server for the domain,
which allows mail to be delivered to the correct mail servers in the domain.
NS (Name Server) Specifies a name server for the domain, which
allows DNS lookups within various zones. Each primary and secondary name server
should be declared through this record.
PTR (Pointer) Creates a pointer that maps an IP address to a host
name for reverse lookups.
SOA (Start of Authority) Declares the host that is the most
authoritative for the zone and, as such, is the best source of DNS information
for the zone. Each zone file must have an SOA record (which is created
automatically when you add a zone).
4.
Question
4. What Are A Forward And Reverse Lookup?
Forward Lookup: When a name query is send to the DNS server against to IP
address, it is generally said a forward lookup.
Reverse Lookup: DNS also provides a reverse lookup process,
enabling clients to use a known IP address during a name query and look up a
computer name based on its address.
5.
Question
5. What Is Primary Zone?
This is the read and
writable copy of a zone file in the DNS namespace. This is primary source for
information about the zone and it stores the master copy of zone data in a
local file or in AD DS. Dy default the primary zone file is named as
zone_name.dns in %windir%System32DNS folder on the server.
6.
Question
6. What Id Secondary Zone?
This is the read only copy
of a zone file in the DNS namespace. This is secondary source for information
about the zone and it get the updated information from the master copy of
primary zone. The network access must be available to connect with primary
server. As secondary zone is merely a copy of a primary zone that is hosted on
another server, it cannot be stored in AD DS.
7.
Question
7. What Is Stub Zone?
A stub
zone is a read only copy of a zone that contains only those resource records
which are necessary to identify the authoritative DNS servers for that particular
zone. A stub zone is practically used to resolve names between separate DNS
namespaces. This type of zone is generally created when a corporate merger or
acquire and DNS servers for two separate DNS namespaces resolve names for
clients in both namespaces.
A stub zone contains:
o The start of authority (SOA) resource record,
name server (NS) resource records, and the glue A resource records for the
delegated zone.
o The IP address of one or more master servers
that can be used to update the stub zone.
8.
Question
8. What Is Caching Only Server?
Caching-only servers are
those DNS servers that only perform name resolution queries, cache the answers,
and return the results to the client. Once the query is stored in cache, next
time the query in resolved locally from cached instead of going to the actual
site.
9.
Question
9. What Is Aging And Scavenging?
DNS
servers running Windows Server support aging and scavenging features. These
features are provided as a mechanism to perform cleanup and removal of stale resource
records from the server and zone. This feature removes the dynamically created
records when they are stamped as stale.
By default, the aging and scavenging mechanism for the DNS Server service is
disabled.
Scavenging and aging must be enabled both at the DNS server and on the zone
10. Question 10. What Is Srv Record In Dns?
The SRV record is a
resource record in DNS that is used to identify or point to a computer that
host specific services i.e Active directory.
11. Question 11. What Is Forwarding In Dns?
A forwarder is a feature in
DNS server that is used to forward DNS queries for external DNS names to DNS
servers outside of that network. We ca configure a DNS server as a forwarder to
forward the name query to other DNS servers in the network when they cannot
resolve locally to that DNS server.
12. Question 12. What Is Conditional Forwarding In
Dns?
We can configure the DNS
server to forward queries according to specific domain names using conditional
forwarders. In this case query is forward to an IP address against a DNS domain
name.
13. Question 13. What Are Queries Types In Dns?
Recursive Query: This name queries are generally made by a DNS client to a
DNS server or by a DNS server that is configured to pass unresolved name
queries to another DNS server, in the case of a DNS server configured to use a
forwarder.
Iterative Query: An iterative name query is one in which a DNS
client allows the DNS server to return the best answer it can give based on its
cache or zone data. If the queried DNS server does not have an exact match for
the queried name, the best possible information it can return is a referral.
The DNS client can then query the DNS server for which it obtained a referral.
It continues this process until it locates a DNS server that is authoritative
for the queried name, or until an error or time-out condition is met.
14. Question 14. What Are Tools For Troubleshooting
Of Dns?
DNS Console, NSLOOKUP,
DNSCMD, IPCONFIG, DNS Logs.
15. Question 15. How To Check Dns Health?
Using the
DCdiag.
i.e. (dcdiag /test:dns /v /e)
16. Question 16. What Is The Use Of Domain Name
System?
o Domain Name Systems are used to help users in
finding the location of the web page over the internet.
o It provides a unique address that is in the form
of strings of numbers and it uniquely identifies a web page.
o The address that is being used called as IP
address and IP is the protocol used to transfer the information over the
network.
o Domain Name systems makes it easy for the user
to remember the name and access the web pages easily.
o DNS is an alternate way to provide easy to
remember IP addresses and use them to access the web-services easily.
17. Question 17. Can You Explain What Are The Main
Function Of Domain Names?
o Domain names provide an easy way to recognize
and memorize the names using the numerically addressed Internet resources.
o It is used to address the Internet resources
placed on internet or it provides and abstraction that allows the resources to
be moved from one place to another in hierarchy.
o It provides a way to move the resources in a
topological form and provide the translation to be done using the IP addresses
and domain names.
o Domain names provide a way to the registrants to
refer to the domain owners for their registration of the domain and have the
ownership of it.
18. Question 18. What Are The Factors Involved In
Guiding The Panelists Decisions?
Panelists
are very important people that take the decision on the cases and on the basis
of criteria come up with the resolution.
The UDRP policy is being contained and using the practical examples the
disputes can be solved.
The criteria required are as follows:
o The domain is identical to another domain or it
is not clear for the trademark option or the service mark with which the
complaint has been registered.
o The respondent of the domain has the rights to
have the domain name and for that the offering of goods and services being
provided to the respondents with the same name.
o The domain was registered and used in bad faith
by other people or company or organization.
19. Question 19. Explain What Are The Results Of The
Procedures Followed By Udrp?
o The result of the procedure follows the domain
name to either transfer or the complaint is being denied.
o During the denying of the complaint the
respondent is allowed to keep the domain name and can cancel the domain name.
o No monetary damage is being done on the basis of
domain name disputes and no provision of injunctive relief is being provided.
o Domain name registrars provide a way to
implement the decision in a duration of their time with their appeal in the
court.
o The panel that will sit for the decisions will
be of accredited registrars who will take the decisions on the basis of
disputes.
20. Question 20. What Are The Steps Involved In
Registering The Domain?
o To register the domains the registering of the
entry into the directory is being placed where the domain names can be
registered according to the computers.
o Domain names are used to provide a way to access
the web pages and they end with .aero, .biz, .com, .coop, .info, .museum,
.name, .net, .org, or .pro.
o The domain names can be registered using
different registrars or companies that deal in registration process.
o The domain gets registered by providing the
information given in the registration process and a record is being maintained
for the same.
o The technical information being provided to the
registrars get stored to a central directory known as registry.
o The registry gives all the information on
different computers that are connected to the Internet and accessing the web
site.
21. Question 21. What Is The Directory Structure Of
The Domain Names?
o Domain names are used as a networking concept
with addressing and application purpose.
o The domain name is used to represent the
Internet Protocol (IP) that provides the resources for the personal computer to
allow the accessing of the internet.
o Domain names are represented from the
subordinate level and also called as sub-domains that are under the root
domain.
o There are three levels of domain names:
o Top level domains are used at the top of the
hierarchy and provide a way down to the lowest level in the hierarchy.
o This consists of gTLDs are also known as generic
top-level domains and used for very generic domain names like .com, .net and
.org.
o This consists of ccTLD are also known as code
top-level domains and used to provide code domains.
22. Question 22. What Is The Role Of Udrp?
o UDRP stands for Uniform Domain Name Dispute
Resolution Policy that is being given by the Internet Corporation for Assigned
Names and Numbers (ICANN).
o UDRP provides the recommendations and uses the
reports made by WIPO. This way the report is being analyzed and certain actions
taken on that.
o The Report in the WIPO on the Internet Domain
Name Process provides the information of disputes and problems.
o UDRP provides a way to report the problems or
conflicts that can come between the trademarks and the domain names.
o The reports produced can be identified by the
use of First WIPO Process and it can be addressed more in other alternate port
domain.
23. Question 23. Do You Know How Does Udrp Function?
o A trademark holder is involved in the whole
process that provides a domain name registration and works under UDRP system.
o The standard disputes are recorded and clauses
are being made with terms and conditions using the gTLD domain name
registration.
o UDRP allows the complaints to be filed with a resolution
service provider and specifies the domain name for which the question is being
raised.
o The grounds on which the resolution is being
provided include the domain name to be identical or similar to the names of
trademarks.
o The respondent is being given the chance to
defend the case by putting the views on the allegations and provides a team to
assist the respondent on this matter.
24. Question 24. What Is The Provision To Change The
Registrars After Registering A Domain Name?
o The provision to register the domain requires
sponsorship for the domain name and it requires a time to register it.
o The transfer of the registration process can be
done by any registrar and they can provide the sponsorship for the
registration.
o The registrars of the accredited by ICANN that
is authorized to the register like .aero, .biz, .com, .coop, .info, .museum,
.name, .net, .org, or .pro names.
o The registrars that are used to register the
domain names offer the services using the resellers program that can provide
the assistance for the registration process.
o Registration contract will be accredited with
the registrar and it will be his responsibility to maintain the information.
25. Question 25. What Is The Purpose Of Domain Name
Space?
o ICANN also known as Internet Corporation for
Assigned Names and Numbers provide tools to manage the hierarchy.
o The management of it includes the top level
domains that are being developed or that are under process.
o The architecture of it is designed using the
Internet domain name space as it allows the authorization to be done from the
registrars.
o The Domain name space is required to allow the
hosting of the files andeasy management through the portal.
o It allows a hierarchical relationship to be
maintained and organized in the zones that are being served by the domain name
servers.
26. Question 26. What Is The Function Of Wipo To
Resolve The Disputes Taking Place?
o ICANN is the organization that looks into the
domain names registration and provides an easy way to get it done as well.
o WIPO makes it easier for businesses to do the
business without any international legal standards.
o It provides the top level domain management like
.com, .net and .org to resolve the dispute that has come up due to some
problems.
o It provides a way to negotiate on the laws that
are on the national and international level and gets uniformed by some
procedures.
o WIPO provides protection to the intellectual
property in international market and provide consultancy to the members of
Internet community.
o It provides the prepared and published reports
to the community that consists of the recommendations that deals with the
domain name issues.
27. Question 27. Explain What Is The Purpose Of Wipo
Providing A Resolution Service Provider?
o WIPO's resolution service provides highly qualified
group of teams and requires the administrative procedures.
o This involves the credibility of the WIPO to
provide faster resolution of the problems that is being offered.
o The dispute resolution is being given at much
faster pace in the courts and it allows the domain to file the case that is
made with the online procedure.
o WIPO reduces the cost that is lower than the
normal litigation and it provides help to solve certain disputes.
o Filing of the requirements is required to help
reduce the costs and provide resolutions for the domain names that involve a
single panelist with very less cost.
28. Question 28. What Is The Role Of Icann In Domain
Names?
o ICANN is a non-profit organization that has the
responsibilities to manage all the technical functions.
o It manages the technical functions and includes
the overall management of the Internet Domain Name System.
o It has registrars accredited with the ICANN and
they all follow a uniform dispute resolution policy in case two companies fight
for same registered name.
o The disputes are being handled by ICANN and it
also provides the resources to register the domain and proceed with all the
legal process.
o ICANN provides security and deals with the cases
that come as a dispute in the court for legal purposes.
29. Question 29. Can You Explain What Are The
Factors Involved In Guiding The Panelists Decisions?
o Panelists are very important people that take
the decision on the cases and on the basis of criteria come up with the
resolution.
o The UDRP policy is being contained and using the
practical examples the disputes can be solved.
o The criteria required are as follows:
o The domain is identical to another domain or it
is not clear for the trademark option or the service mark with which the
complaint has been registered.
o The respondent of the domain has the rights to
have the domain name and for that the offering of goods and services being
provided to the respondents with the same name.
o The domain was registered and used in bad faith
by other people or company or organization.
30. Question 30. What Are The Reasons Of Having
Disputes?
The reasons of having
disputes are as follows:
o No proper agreement to proceed with the
conditions and due to the growing community of internet more and more people
are trying to compete with each other.
o No agreement is being given to the organizations
for allowing them to register the domain names to use the names that are
problematic.
o It allows easy registration of the business but
later have practical difficulties to carry on with it due to the name rights,
etc.
o The increasing business value is also one of the
reasons of disputes for the domain names that is being on the internet.
o More and more cybersquatting taking place that
is bringing more disputes between the cybersquatters and businesses those have
their name registered.
31. Question 31. Do You Know How Does Wipo Ensure
That There Is No Conflict Of Interest?
o WIPO provide a way to deal with the dispute by
providing a dispute process and administrating it for any changes.
o The communication is being done between the
different parties and it keeps several circumstances that provide the
resolutions of disputes occurring.
o An appointment of the expert is being reviewed
where the issue is being resolved by taking a decision by the expert.
o It involves the independent individuals that
decides the cases for each of the individuals and considers the level of
dispute.
o Panelists are used to confirm the WIPO dispute
process so that certain actions can be taken on the part of the disputes.
32. Question 32. What Are The Rules For Registration
Of .biz, .com, .info, .name, .net And .org Names?
o The domain names can be registered without any
restriction and provide open secure channel to file the names for registration.
o The domain names that are shown differently used
for different domains and industries that involves the internet infrastructure.
o The activities for the registration being
performed on the basis of domains that needs to be taken for example .org.
o There are different domains with different
purposes like .org is used for non-commercial organizations and .biz for
business purposes.
o After domain registration some legal forms need
to be filled to register the domain with the registrar after checking the
availability.
33. Question 33. What Is Authoritative Name Server?
An authoritative name
server is a name server that gives answers that have been configured by an
original source, for example, the domain administrator or by dynamic DNS
methods, in contrast to answers that were obtained via a regular DNS query to
another name server. An authoritative-only name server only returns answers to
queries about domain names that have been specifically configured by the
administrator.
34. Question 34. What Is The Nature Of Domain Name
Disputes?
o Domain name disputes enable the users to find
the computers and people in an easy way.
o Domain name has significance that has acquired
business demands and identifiers to identify the business and target only the
businesses existing.
o These disputes are protected by intellectual
property rights that include the rules and regulations to tackle the disputes.
o The disputes rises due to the cybersquatting
this provides a way to pre-emptive the registration process for the trademarks
by third parties and as a domain names.
o Domain names are registered and targeted for the
benefit of other person or company. It is being done by the cybersquatters.
o Domain names are being registered with the same
domain names by main cybersquatters and put up for the auctions to illegally
use the name of the person or the company to benefit themselves.
35. Question 35. Tell Me What Are The Ways To
Administer The Cases Under Udrp?
o UDRP is used to settle the disputes by providing
the domain name service provider and it provides facilities for top level
domains.
o The top level domains like .com, .net, and .org
are the generic domains that consist of policies similar to the URDRP.
o WIPO provides a way to resolve the services for
the country code top level domains and it works under the principle of UDRP.
o WIPO domain name process provides a way to
address the disputes that is being raised by the protection identifiers other
than the trademarks.
o It provides the geographical indications and
monitors the overall activities like personal names, trade names or acronyms of
international intergovernmental organizations.
36. Question 36. What Are The Rules Of Registration
For The Domains Like .uk, .in, Etc.?
o To register the domain name it is required to
know the ccTLDs that are associated with the geographic location.
o There are rules and policies that are registered
for the domain names and searching for the domain name happens that are
reserved for the countries.
o The checking need to, be done for the
registration process from the registrar that offers ccTLD registration
services.
o ICANN requires the registration services in the
ccTLDs provide the registration and its services.
o It provides the database that is designated to
the managers and that includes the complete database.
37. Question 37. What Is The Main Purpose Of A Dns
Server?
DNS servers are used to
resolve FQDN hostnames into IP addresses and vice versa.
38. Question 38. What Is A Forward Lookup?
Resolving Host Names to IP
Addresses.
39. Question 39. How Do I Set Up Dns For A Child
Domain?
To set up
DNS for a child domain, create a delegation record on the parent DNS server for
the child DNS server. Create a secondary zone on the child DNS server that
transfers the parent zone from the parent DNS server.
Note Windows Server 2003 has additional types of zones, such as Stub Zones and
forest-level integrated Active Directory zones, that may be a better fit for
your environment. Set the child domain controller to point to itself first. As
soon as an additional domain controller is available, set the child domain
controller to point to this domain controller in the child domain as its
secondary.
40. Question 40. What Should I Do If The Domain
Controller Points To Itself For Dns, But The Srv Records Still Do Not Appear In
The Zone?
Check for
a disjointed namespace, and then run Netdiag.exe /fix.
You must install Support Tools from the Windows 2000 Server or Windows Server
2003 CD-ROM to run Netdiag.exe.
41. Question 41. What Is The Main Purpose Of Srv Records?
SRV records are used in
locating hosts that provide certain network services.
42. Question 42. Before Installing Your First Domain
Controller In The Network, You Installed A Dns Server And Created A Zone,
Naming It As You Would Name Your Ad Domain. However, After The Installation Of
The Domain Controller, You Are Unable To Locate Infrastructure Srv Records
Anywhere In The Zone. What Is The Most Likely Cause Of This Failure?
The zone you created was
not configured to allow dynamic updates. The local interface on the DNS server
was not configured to allow dynamic updates.
43. Question 43. How Do I Clear The Dns Cache On The
Dns Server?
Go to cmd prompt and type
ipconfig /flushdns .
44. Question 44. Soa Records Must Be Included In
Every Zone. What Are They Used For?
SOA
records contain a TTL value, used by default in all resource records in the
zone. SOA records contain the e-mail address of the person who is responsible
for maintaining the zone. SOA records contain the current serial number of the
zone, which is used in zone transfers.
By default, if the name is not found in the cache or local hosts file, what is
the first step the client takes to resolve the FQDN name into an IP address?
Performs a recursive search through the primary DNS server based on the network
interface configuration.
45. Question 45. What Is Wins Server? Where We Use
Wins Server? Difference Between Dns And Wins?
WINS is windows internet
name service used to resolve the NetBIOS(computer name)name to IP address.This
is proprietary for Windows.You can use in LAN.DNS is a Domain Naming System,
which resolves Host names to IP addresses. It uses fully qualified domain
names. DNS is an Internet standard used to resolve host names.
46. Question 46. What Is Forwarder?
When one DNS server can't
receive the query it can be forwarded to another DNS once configured as
forwarder.
47. Question 47. What Is Secondary Dns Server?
It is backup for primary
DNS where it maintains a read only copy of DNS database.
48. Question 48. How To Enable Dynamic Updates In
Dns?
Start>Program>Admin
tools> DNS >Zone properties.
49. Question 49. What Are The Properties Of Dns
Server?
INTERFACES, FORWARDERS,
ADVANCED, ROUTINGS, SECURITY, MONITORING, LOGGING, DEBUG LOGGING.
50. Question 50. Properties Of A Zone?
General, SOA, NAMESERVER,
WINS, Security, and ZONE Transfer.
51. Question 51. What Is Scavenging?
Finding and deleting
unwanted records.
52. Question 52. What Are Srv Records?
SRV are the service
records, there are 6 service records. They are useful for locating the
services.
53. Question 53. What Are The Types Of Srv Records?
MSDCS:Contains
DCs information.
TCP:Contains
Global Catalog, Kerberos & LDAP information.
UDP:Contains
Sites information.
Sites:Contains
Sites information.
Domain DNS Zone:Conations domain?s DNS specific information.
Forest DNS zone:Contains Forest?s Specific Information.
54. Question 54. Where Does A Host File Reside?
c:windowssystem32driversetc.
55. Question 55. What Is Primary, Secondary, Stub
Zone?
Primary Zone: -
zone which is saved as normal text file with filename (.dns) in DBS folder.
Maintains a read, write copy of zone database.
Secondary Zone: - maintains a read only copy of zone database on
another DNS server. Provides fault tolerance and load balancing by acting as
backup server to primary server.
Stub zone: - contains a copy of name server and SOA records used
for reducing the DNS search orders. Provides fault tolerance and load
balancing.
56. Question 56. How Do You Manually Create Srv
Records In Dns?
This is on windows server
go to run ---> dnsmgmt.msc rightclick on the zone you want to add srv record
to and choose "other new record" and choose service location(srv).
57. Question 57. What Is The Port No Of Dns?
The port number of DNS is
53.
58. Question 58. Soa Records Must Be Included In
Every Zone. What Are They Used For ?
SOA records contain a TTL
value, used by default in all resource records in the zone. SOA records contain
the e-mail address of the person who is responsible for maintaining the zone.
SOA records contain the current serial number of the zone, which is used in
zone transfers.
59. Question 59. By Default, If The Name Is Not
Found In The Cache Or Local Hosts File, What Is The First Step The Client Takes
To Resolve The Fqdn Name Into An Ip Address?
Performs a recursive search
through the primary DNS server based on the network interface configuration.
60. Question 60. Which Of The Following Conditions
Must Be Satisfied To Configure Dynamic Dns Updates For Legacy Clients?
The zone to be used for
dynamic updates must be configured to allow dynamic updates. The DHCP server
must support, and be configured to allow, dynamic updates for legacy clients.
