Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
DNS Records and Messages
Two types of records are used DNS. The question records are used in the question section of the query and response messages. The resource records are used in the answer authoritative and additional information sections of the response message.
Question Record: A questions records in used by the client to get information from a server. This contains the domain name.
Resource Record: Each domain name is associated with a record called the resource record. The server database consists or resource returned by the server to the client.
A resource records is a quadruple that contains the following fields.
Name , Value , Type , TTL
TTL is the time to live of the resource records. It determines when a resource should be removed from a cache form a cache. In the example records given below we ignore the TTL field.
The meaning of name and value depend on type:
If a DNS server is authoritative for a particular host name then the DNS server will contain a type a record for the hostname. If a server is not authoritative for a hostname then the server will contain a type NS record for the domain that includes the hostname. It will also contain a Type a record that provides the IP address of the DNS server in the value field of the NS records. As an example suppose an edu TLD server is not authoritative for the host gain cs un mass edu. Then this server will contains a record for a domain that includes the host cs mass. Edu. For example ( umass edu dns unmass. Edu NS) the du TLD server would also contain a Type a record which maps the DNS. Server dns umass.edu to an IP address for example ( dns umass edu 128.119.111A)
Hyper Cube A Hypercube interconnection network is increament of cube network. Hypercube interconnection network for n ≥ 3, can be distinct recursively as follow: For n = 3,
There is no commonly accepted meaning for a TP monitor. According to Jeri Edwards' a TP Monitor is "an OS for transaction processing".
Hypercube Network The hypercube architecture has played a vital role in the development of parallel processing and is still not much popular and influential. The highly symmetr
Develop traffic flow mapping and performance requirements for flows. A) Traffic Flow Mapping B) Performance Requirements
Q. Why congestion occurs? Congestion Emerge if the load on the network is greater than the capacity of the network - Load that is the number of packets sent to the net
Q1. What advantages do you see in having a layered concept of computer networks? Which layers or OSI structure deals with identification of a host? Explain the proces
Explain the Acknowledged connectionless service This is a cross between the previous two services. It provides that datagrams are to be acknowledged, but no prior logical conne
Mean node-node path The mean node-node path is two times the mean node-root path. Number the levels of the tree with the root as 1 and the deepest level as N. The path from t
What is a binary semaphore? What is its use? A binary semaphore is takes only 0 and 1 as values. They are used to execute mutual exclusion and synchronize concurrent p
IP plus port (IP on layer 3 and port on Layer 4 - In Encapsulation, socket base decision on Network Layer -Layer 3)
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd