Suppose that an unusual state of affairs occurs in which you were required to manually configure NetBIOS name declaration utilizing a LMHOSTS file merely. Assume this is the lone manner you could implement NetBIOS name declaration. Describe the stairss that you would travel to in order to: make the file, modify the file to include the name declaration information and shop the file on the machine. What stairss would be necessary to guarantee that each computing machine communicates with each other efficaciously utilizing NetBIOS? What are some jobs that may originate? A
Answer: First, with the usage of LMHOSTS file, the jobs that occur are breakdown to turn up a distant computing machine can happen as one or other undermentioned mistakes are at that place in LMHOSTS file:
This files do n’t incorporate a entree for remote waiter
All LMHOSTS names are automatically changed to uppercase, the NETBIOS name in LMHOSTS file is incorrect spelled.
IP reference for NETBIOS name is non valid in LMHOSTS file.
All the clip LMHOSTS file is losing when required passenger car return at terminal.
The necessary stairss to guarantee that each computing machine communicates with each other efficaciously utilizing NetBIOS are, there are many ways one of them is shown below
Start Device Manager.
ClickA View, and so clickA Show concealed devices.
In the right window glass of Device Manager, clickA Non-Plug and Play Drivers.
Double-clickA AFD Networking Support Environment.
UnderA Device use, select theA Use this device to enableA cheque box, and so snap OK.
Other manner is an application that uses the NetBIOS interface API for web communicating can be run on some protocol stack that supports a NetBIOS interface. NETBIOS is protocol which provides maps at session and conveyance such as dependable connection-oriented session informations transportation, web name enrollment and confirmation and undependable connectionless datagram informations transportation. NetBIOS over TCP/IP transfer the NetBIOS protocol over the TCP or UDP.
Making the LMHOSTS File: by configuring a system to utilize LMHOSTS file. We must do primary LMHOST file on each system, name file LMHOSTS and salvage in % systemroot % System32DriversEtc directory. We can make a file even by text editor.
2. Suppose your web utilises a WINS waiter. Besides, assume you are the web decision maker and were called in to trouble-shoot a job in which the WINS server itself could non be accessed utilizing NetBIOS name declaration. Assume all other machines are working and pass oning decently with the WINS waiter in order to decide NetBIOS names. Describe what you view to be the most likely cause of this web ‘s problem.A
Answer: The most likely job grounds are
they can non turn up the cause of extra name mistake messages: For this brand certain the WINS database for the name. If we find a inactive record, take from the database of the chief WINS waiter for client where the transcript name was noticed. ca n’t put the ground for Network way non found mistake messages on a WINS client: for this brand certain the WINS database for the name. If the name is non at that place in the database, look into whether the system uses B-node name declaration. If yes, add a inactive function for it in the WINS database, WINS backup neglecting on a regular basis: For this guarantee that the path for the WINS backup directory is on a local disc on the WINS waiter. WINS ca n’t back up its database files to a distant thrust. The WINS waiter buzzword pull or force the reproductions to another WINS waiter: do certain every waiter is right configured to draw or force, if server are placed across the routers, verify that job is non loss of web connectivity or the path failure on in-between nexus.
3. There are 13 root waiters that control the overall DNS search procedure for the full Internet. If these 13 waiters were to go unavailable, much of the Internet would be unaccessible. Resources would hold to be accessed via IP reference, non by host name. However, hackers one time managed to assail 11 of the 13 root waiters, ensuing in debauched public presentation. Surprisingly, Internet users did non detect any difference. Can you explicate in inside informations why? A
Answer: the ground why the cyberspace user can non detect any difference because whatever they perform they do behind the system that is they hide and execute the activities where the normal user can non cognize what is go oning at the dorsum. What they do is they change their IP reference every clip and they perform their act. These fast ones are non large thing.
A A fast one to do an allowed user to make an action that disobeys system security or else that presents off information to an interloper. There are many ways to be secure on the Internet though. There are many ways to conceal your IP reference for any web site. If we know a few about the Internet we can utilize this truly website that “ Spoofs ” a different IP reference hence concealing your echt 1. Frequently a hacker changes their IP reference several times an hr merely to do certain any hint they might go forth buttocks is every bit difficult as possible to track.
4. Discuss in inside informations how would you manually force Windows XP clients to update their Dynamic DNS information? A
Answer: A DNS client computing machine running WindowsA XP uses the subsequent processs to execute a DNS dynamic update:
a ) .The client queries its configured DNS waiter to happen the Start of Authority ( SOA ) resource file for the DNS zone of the DNS name that is being updated.
B ) .The DNS client ‘s configured DNS waiter performs the criterion name declaration procedure and sends the SOA file, which have the IP reference of the primary name waiter for the queried DNS zone.
degree Celsius ) .The client sends a dynamic update petition to the primary name waiter for the zone of the DNS name that is being updated.
This petition includes a list of necessities that should be fulfilled before the update can be completed. Resource record set exists, name is non in usage, name is in usage and resort record set does non be are the types of necessities
The chief name server decides whether the necessities have been satisfied. If it is fulfilled the chief DNS waiter does the petition update or else it fails.
Or else, the chief DNS waiter responds to the client, bespeaking the update done. if the DNS dynamic update is non done, the DNS client saves the event in the system event log.
hypertext transfer protocol: //technet.microsoft.com/en-us/library/bb727009.aspx # EGAA
hypertext transfer protocol: //technet.microsoft.com/en-us/library/cc784052 ( WS.10 ) .aspx ( we )
5. If you were pull offing the web for a big administration, would the DNS information be in one physical location or many? Explain in inside informations your decision.A
Answer: if I am pull offing a web for the big administration, I will take to turn up in many physical locations because foremost it will useful for backup and easy to split the information into separate parts. So it will be utile when we search we can happen easy. The chief ground is in DNS record each file holds different information about the service, IP reference, sphere and host name.Different queries request information contained in specific DNS record types So it will be easy to to happen out when required for a peculiar service. It besides helpful for DNS records are created on a DNS waiter to decide quires if it is on different locations.
In recursive search a DNS question i.e. determined during other DNS waiter waiting requested information is located. Storing information in Active Directory presents the automatic backup of zone information ; enhance security and multi maestro reproduction.
6. You attempted to optimize security scenes for DNS and forgot to document the original scenes, thereby rendering your waiter inoperable. How would you repair this job? A
Locate the booklet in which you last saved the losing file.
Search for files with the.wbk file name extension.
If you locate any files that have the name “ Backup of ” followed by the name of the losing file, follow these stairss, the stairss are different for different MS word. The below one is for MS 2002 or 2003
On FileA bill of fare, clickA Open.
Point to the pointer in theA Files of typeA box, clickA All Files * . * , select the file, and so clickA Open.
If there is no.wbk file in the original booklet, search the computing machine for any.wbk files. To make this, follow these stairss, there are different stairss for different Windows
ClickA Start, point toA Search, and so clickA For Files or Folders.
In theA Search for files or booklets namedA box, typeA *.WBK.
In theA Look inA box, point to the pointer, so clickA My Computer.
Measure 1: usage undertaking director
a ) . Press alt command delete and choice undertaking director
B ) . On procedure check select the winword.exe so click terminal procedure. Repeat this and unclutter all winword.exe
degree Celsius ) . Now near undertaking director and start word.
Now if the papers finds Auto Recover file, on left side of proctor losing papers is listed. If this happen selects the papers and chink saves as on file bill of fare. Now save it as.doc
Measure 2: hunt manually, for this there is different stairss for different version of word.
For word 2010: chink on recent on file bill of fare now click Recover Unsaved Documents.
Measure 3: hunt for.asd files, hunt these files with the aid of hunt options on start memu. Once we find the.asd papers.
Open word 2010. Snap on file bill of fare, so open
In the type of files click All Files
Click on.asd file and so open.
After that save the papers.
7. Suppose you are the decision maker of a slow broad country web. As your web is really slow, it is perfectly indispensable that WAN traffic be reduced to the minimal sum necessary. Because of this, you have already decided non to hive away Active Directory-integrated zones and secondary zones. You need some sort of local DNS but you besides need reduced web traffic. What is likely your best staying option? Describe this option and how it is set up on the network.A
Since intranet browse can make most of web traffic, some step to optimise this traffic is good.
Use little web site pages: As a common ordinance, a HTML design limitations page scrolling.
Restrict the volume of artworks. Just use the general artworks during the intranet.
Degree of security required with our site. This security requires excess confirmation leting unknown links stops the hallmark traffic from go oning on web.
Educate clients to heighten the client ‘s local cache. in the yesteryear downloaded files do n’t hold to be downloaded yet once more.
Instruct traffic related with the confirmation of trusted relation by adding the suited users to a planetary group or to a local group or local resource.
And besides cut down DNS recursive traffic by
Not configuring recursion. It restricts the few sums of ask for names DNS can provide, but it need all host names be included to every DNS waiter, it is administrative burden.
Designating DNS waiter. Make certain that DNS server resolve the names for peculiar client is selected DNS waiter. It decreases recursive search and its related traffic.
Turning the TTL of cached entries via DNS Manager. It give inside informations how to set up for all records in a zone, for an entity file, or for WINS file.
8. A fellow web decision maker wants you to implement “ hapless adult male ‘s burden reconciliation ” for her web waiter. Briefly describe what is a “ hapless adult male ‘s burden reconciliation ” and how can this be done? A
Answer: It is all about the undertaking of having incoming petitions to be a load balance. It is really easy manner to do certain that incoming petitions are sent to the best host processing. Through it is non the well-designed attack, nevertheless its about surely the fewest lines of codification. That is the ground it is called as “ hapless adult male ‘s burden balancer ” . In other words, we run daemon that collects the burden criterions for the exchangeable machines in the bunchs. The devil writes down little list seeable to a CGI book to take an entrance URL besides forwards the invoker to same URL on the least-loaded machine, randomly airting the petition in proportion to the current burden norm. Therefore, from the welcome page of the application, all the go forthing links are sent throughout this redirect book and knock.
There are few topographic points where we need to equilibrating they are at:
IP degree: we can make BGP flim-flam which involve in stating the waiter IPs to many locations, utilizing burden equilibrating hardware. But this is non possible because it requires tonss of money and infra construction and ain IP allotments.
DNS waiters: Some DNS waiters are dependable for irc.blitzed.org answer petition from users when effort to bond our systems. These waiters have entree to call server IP that user is utilizing.
IRC server degree: These waiters see the existent IP of the user, so some manner they connect user to better waiters. Unfortunately here is no clasp up within the IRC client protocol for making this. The numeric is used to state to other waiter, nevertheless it involves in withdrawal from the IRC and reconnects to other waiter.
The DNS is the best for burden reconciliation.
9. What are the common errors that are made when decision makers set up DNS on web that contains a individual Windows Server 2003 sphere accountant? Please spread out on your
Answer: The general errors made when decision makers set up the DNS web that contains a individual Windows waiter 2003 sphere accountant are
“ . ” zone exists under forward search zones: This scene assigned Windows Server 2003 DNS waiter to be a root waiter which is normally deleted. If we do n’t cancel this scene, we ca n’t finish external name declaration to the root waiters on the Internet.
Further systems on the local country web do n’t indicate to Windows Server 2003 DNS waiter for DNS.
The sphere accountant is non point to itself for DNS declaration on all web interfaces.
10. Your administrative user history is a member of the Enterprise Admins and Schema Admins groups in your company ‘s Active Directory forest. The forest consists of a individual sphere named bcdtrain.com that is running in Windows 2000 native manner. Your company late acquired a new subordinate. To back up this subordinate, you plan to make a new sphere tree in the wood that will incorporate a tree root sphere named meddev.com and a kid sphere named research.meddev.com.A
The Domain Name System ( DNS ) waiter service is installed on two of the sphere accountants for bcdtrain.com. The DNS zone for bcdtrain.com is configured as an Active Directory-integrated zone. You create a new zone named meddev.com on one of these DNS waiters, and you accept the default scenes for the zone.A
The sphere accountants for the new spheres will be computing machines that are running Windows Server 2003. You run the Adprep public-service corporation with the forestprep option from the Windows Server 2003 installing CD-ROM to update the wood ‘s scheme to back up the new domains.A
What extra measure must you execute to guarantee that you can make the kid sphere in the new sphere tree?
Answer: To make kid sphere in the new sphere tree these are the undermentioned stairss:
Open the Active Directory Installation Wizard.
On Domain Controller Type, connectA Domain accountant for a new sphere, after that clickA Next.
On Create New DomainA web page, clickA Child sphere in an bing new sphere tree, so clickA Next.
On Network CredentialsA page, login user name, watchword, and user sphere of the client history for this operation, and so snap Next.A
On Child Domain InstallationA page, confirm the parent sphere and come in new kid sphere name, so clickA Next.
On NetBIOS Domain NameA page, confirm the NetBIOS name, so clickA Next.
On theA Database and Log filesA page, choice browse for the location where to put in the database and log files, so clickA Next.
On Shared System VolumeA page, choice browse for the location where to put in the Sysvol file, so click Next.
On DNS Registration DiagnosticsA page, confirm the DNS constellation scenes are right, so clickA Next.
On PermissionsA page, select anyone of them: A
Permissions compatible merely with Windows ServerA 2003 runing systems
OnA Directory Services Restore Mode Administrator PasswordA page, confirm the watchword which we want to give to this waiter ‘s Administrator history that is used when the computing machine is started in Directory Services Restore Mode, so clickA Next.
Evaluate SummaryA page, so clickA NextA to get down the installing.
Restart the computing machine.