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If a DNS resolver sends a query without EDNS, or with EDNS version 0, then a name server synthesizes a CNAME record to simulate the semantics of the DNAME record.
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If and DNS
If the cache does not contain the answer, the resolver will send the request to one or more designated DNS servers.
If the line to one server is congested, the unreliability of DNS ensures less HTTP traffic reaches that server.
If during the DHCP transaction, the device obtains a domain name, for example, through a DNS server or via DNS forwarding, the device should use that name in subsequent network operations ; otherwise, the device should use its IP address.
If that one server got compromised one day, or an attacker cracks the MS DNS server again, there could be millions of users installing trojans every hour.
If DNS services are not offered, or the end-user opts out, the end-user is responsible for procuring or self-hosting DNS services.
If an unauthenticated client requests a website, DNS is queried by the browser and the appropriate IP resolved as usual.
If the *@ host option is used, the server must conduct a reverse DNS lookup on the user and then compare the returned host to the hosts in the G-line list.
If the *@ host option is used, the server must conduct a reverse DNS lookup on the user and then compare the returned host to the hosts in the Z-line list.
If the DHCP server does not provide the desired information, DNS is used.
* If the DNS method is used, a file named wpad. dat must be located in the WPAD Web site's root directory.
* If you are using Windows Server 2003 ( or later ) as your DNS server, you might have to disable the DNS Server Global Query Block List, or even modify the registry to edit the list of blocked queries
If there is one, and if such a connection can be made, they hand the actual work of dealing with the lookup over to the DNS Client service.
** With the DNS Client service running: If the " hosts " file contains multiple lines denoting multiple answers for a given lookup, all of the answers in the cache will be returned.
** Without the DNS Client service running: If the " hosts " file contains multiple lines denoting multiple answers for a given lookup, only the first answer found will be returned.
If the preferred DNS server fails to answer, all subsequent communication is with the alternative DNS servers.
If there is an answer, a forward DNS lookup of that answer authenticates the sender if it returns the connecting IP address.
If a DNS server is poisoned, it may return an incorrect IP address, diverting traffic to another computer ( often the attacker's ).
If the server does not correctly validate DNS responses to ensure that they are from an authoritative source ( for example by using DNSSEC ) the server will end up caching the incorrect entries locally and serve them to other users that make the same request.
* If the Domain Name System is malfunctioning, or DNS changes haven't propagated to all ISPs ' resolvers, it is not possible to fall back to using the IP address to contact the system.
If a service at one of the addresses in the list fails, the DNS will continue to hand out that address and clients will still attempt to reach the inoperable service.
If and resolver
If the cache can provide the answer to the request, the resolver will return the value in the cache to the program that made the request.
If a stub resolver queries the caching nameserver for the same record before the TTL has expired, the caching server will simply reply with the already cached resource record rather than retrieve it from the authoritative nameserver again.
( If the resolver is specifically told to look for CNAME records, the canonical name ( right-hand side ) is returned, rather than restarting the query.
If the last name server queried did not contain authoritative data for the target of the CNAME, it would have issued the resolver with yet another referral, this time to the zone text. wikimedia. org ..
If and sends
If one merchant sends a writing sufficient to satisfy the statute of frauds to another merchant and the receiving merchant has reason to know of the contents of the sent confirmation and does not object to the confirmation within 10 days, the confirmation is good to satisfy the statute as to both parties.
If the called party's line is available, the exchange sends an intermittent ringing signal ( about 90 volts alternating current ( AC ) in North America and UK and 60 volts in Germany ) to alert the called party to an incoming call.
If an origin is also chosen, this can be decomposed as an affine transformation that sends, namely
If, by unfortunate means, non-magical people do happen to observe the working of magic, the Ministry of Magic sends Obliviators to cast Memory Charms upon them — causing them to forget the event.
If the victim agrees to the deal, the other side often sends one or more false documents bearing official government stamps, and seals.
Hatred relates a past experience with a Nigerian scammer while attempting to introduce Dr. Venture to the concept of email, saying: " If it ’ s a Nigerian prince asking you to take twelve million dollars, he never sends it.
If the size of the transferred file is an exact multiple of the block-size, the source sends a final DATA packet containing 0 bytes of data.
This category is called the category of presheaves on X with values in C. If has an initial object, then the constant functor which sends every open set to is an initial object in the category of presheaves.
If you throw it up with your hands, it sends a flaming furrow through the sky like a star.
If a particular peer wishes to send a message, it waits to receive the token, sends its message, and then passes the token on to the next station.
If the master wishes to write to the slave then it repeatedly sends a byte with the slave sending an ACK bit.
If Bob sends his public key to Alice, but Mallory is able to intercept it, a man-in-the-middle attack can begin.
If you told someone who purports to be a sage of Israel that the Deity sends an angel who enters a woman's womb and there forms an embryo, he would think this a miracle and accept it as a mark of the majesty and power of the Deity, despite the fact that he believes an angel to be a body of fire one third the size of the entire world.
" If the SEC staff determines that this is the case, it sends a letter to the CRA indicating that if a regulated entity were to rely on the CRA's ratings, the SEC staff will not recommend enforcement action against that entity.
If it represents address 0. 0. 0. x with nonzero x, the server must read in the domain name that the client sends in the packet.
If the aircrew does not like the route it sends the route changes to ATM and AOC.
If he sends the fork over, he cleans the fork before doing so.
If another philosopher had previously requested one of the forks, he cleans the fork and sends it.
If the user types in www. bank. example, but his communication is hi-jacked and a fake web-site ( that pretends to be the bank web-site ) sends the page information back to the user's browser, the fake web-page can send a fake public key to the user.
If another client / process tries to open the same file, the server sends a message to the client ( called a break or revocation ) which invalidates the exclusive lock previously given to the client.
If one has cached that address and it is in the state " dirty ", it changes the state to " valid " and sends the copy to requesting node.
If the client does not support the SHOUTcast protocol, then the SHOUTcast server sends the stream without the metadata thus allowing it to be heard / viewed in clients like Windows Media Player.
If the homothetic center S happens to coincide with the origin O of the vector space ( S ≡ O ), then every homothety with scale factor λ is equivalent to a uniform scaling by the same factor, which sends
If this matches the challenge-text the Access Point sends back a positive reply.
* If b = 1 Alice sends G ( Y ) to Bob, otherwise she sends the bitwise exclusive-or of G ( Y ) and R to Bob.
1.763 seconds.