How do you calculate transmission delay?
Denote the length of the packet by L bits, and denote the transmission rate of the link from router A to router B by R bits/sec. For example, for a 10 Mbps Ethernet link, the rate is R = 10 Mbps; for a 100 Mbps Ethernet link, the rate is R = 100 Mbps. The transmission delay is L/R.
Is the time required to push all the packet’s bits into the link?
The transmission delay (also called the store-and-forward delay, as discussed in Section 1.4) is L/R. This is the amount of time required to transmit all of the packet’s bits into the link. 2*108 meters/sec to 3*108 meters/sec, equal to, or a little less than, the speed of light.
How do you calculate transmission delay and propagation delay?
Transmission delay is how long it takes to get all the bits into the wire in the first place (it’s packet_length/data_rate). The transmission delay is the amount of time required for the router to push out the packet. The propagation delay, is the time it takes a bit to propagate from one router to the next.
Which delay represents the time required to examine the packet’s header and determine where to send the packet?
Processing delay
What does transmission delay not depend on?
Therefore the delay is proportional to the packet length and transmission rate and not on the distance between the routers.
Is the time required to examine a packet’s header and determine where to direct it?
The time required to examine the packet’s header and determine where to direct the packet is part of the processing delay.
Which is not a application layer protocol?
1. Which is not a application layer protocol? Explanation: TCP is transport layer protocol. Explanation: For Application, Presentation and Session layers there is no data format for message.
Which of the following is not applicable for IP?
Discussion Forum
| Que. | Which of the following is not applicable for IP? |
|---|---|
| b. | Handle addressing conventions |
| c. | Datagram format |
| d. | Packet handling conventions |
| Answer:Error reporting |
Which HTTP method leaves entity body empty?
GET method
Which one of the following authentication method is used by SSH?
SSH uses public-key cryptography to authenticate the remote computer and allow it to authenticate the user, if necessary. The public key is placed on all computers that must allow access to the owner of the matching private key (the owner keeps the private key secret).
Which of the following is present in both an HTTP?
Discussion Forum
| Que. | Which of the following is present in both an HTTP request line and a status line? |
|---|---|
| b. | URL |
| c. | Method |
| d. | None of the above |
| Answer:HTTP version number |
Which HTTP method Send by browser that are the server to get the page only?
Requests using GET should only retrieve data and should have no other effect on the data. Same as GET, but transfers the status line and header section only. A POST request is used to send data to the server, for example, customer information, file upload, etc. using HTML forms.
How are servlets invoked?
You can invoke a servlet by directly addressing it from a Web page with a URL or by calling it programmatically from an already running servlet.
What is JSP useBean?
The jsp:useBean action tag is used to locate or instantiate a bean class. If bean object of the Bean class is already created, it doesn’t create the bean depending on the scope. But if object of bean is not created, it instantiates the bean.
Why use RequestDispatcher to forward a request to another resource instead of sendRedirect?
Why use RequestDispatcher to forward a request to another resource instead of sendRedirect? RequestDispatcher is used to dispatch request to the resource run in same web applications, and sendRedirect() can be used to redirect client user to request other web application’s resource.
What is the key difference between using forward and sendRedirect?
The main important difference between the forward() and sendRedirect() method is that in case of forward(), redirect happens at server end and not visible to client, but in case of sendRedirect(), redirection happens at client end and it’s visible to client.
What is the difference between forward and redirect in Servlet?
The Forward method forwards a request from one servlet to another resource in a web application and this resource can be another servlet, JSP page, or HTML file. The Redirect method, on the other hand, redirects the request to a different application. You cannot do this with a forward method.
What is difference between redirect and forward method?
Though, both are used for forwarding HTTP requests for further processing there are many differences between forward() and sendRedirect() method e.g. forward is performed internally by Servlet, but a redirection is a two-step process, where Servlet instruct the web browser (client) to go and fetch another URL, which is …
Is Cookie name and value is sent by Servlet to Web browser?
Class Cookie. Creates a cookie, a small amount of information sent by a servlet to a Web browser, saved by the browser, and later sent back to the server. A cookie has a name, a single value, and optional attributes such as a comment, path and domain qualifiers, a maximum age, and a version number.
What is the difference between forward and redirect in Spring MVC?
Forward: is faster, the client browser is not involved, the browser displays the original URL, the request is transfered do the forwarded URL. Redirect: is slower, the client browser is involved, the browser displays the redirected URL, it creates a new request to the redirected URL.
How do I redirect from one servlet to another?
To forward request from one servlet to other either you can user RequestDispatcher or SendRedirect. To use RequestDispatcher you must have to get ServletContext reference and then you have to call the getRequestDispatcher() method of ServletContext and using SendRedirect you have to write response. sendRedirect(“URL”).
Which of the following is used to send data from one servlet to another?
The forward() method is used to transfer the client request to another resource (HTML file, servlet, jsp etc). When this method is called, the control is transferred to the next resource called….Related Articles.
| forward() | sendRedirect() |
|---|---|
| It works on the server side | It works on the client side |
What is the life cycle of a servlet?
The lifecycle of a servlet is controlled by the container in which the servlet has been deployed. When a request is mapped to a servlet, the container performs the following steps. Loads the servlet class. Creates an instance of the servlet class.
Which object is used to forward the request processing from one servlet to another?
javax.servlet Interface RequestDispatcher
| Method Summary | |
|---|---|
| void | forward(ServletRequest request, ServletResponse response) Forwards a request from a servlet to another resource (servlet, JSP file, or HTML file) on the server. |
How do I forward a servlet to a JSP?
How to Forward Request from Java Servlet to JSP with Data
- String name = “John” ; request.setAttribute( “name” , name);
- Integer numberOfItems = 1000 ;
- request.setAttribute( “itemCount” , numberOfItems);
- List fruits = Arrays.asList( “Apple” , “Banana” , “Lemon” , “Papaya” ); request.setAttribute( “itemCount” , numberOfItems);
What are the two main types of servlet?
There are two main servlet types, generic and HTTP:
- Generic servlets. Extend javax. servlet. GenericServlet. Are protocol independent.
- HTTP servlets. Extend javax. servlet. HttpServlet. Have built-in HTTP protocol support and are more useful in a Sun Java System Web Server environment.
What is the difference in using request getRequestDispatcher () and context getRequestDispatcher ()?
The request method getRequestDispatcher() can be used for referring to local servlets within single webapp. Servlet context based getRequestDispatcher() method can used of referring servlets from other web applications deployed on SAME server.
What is getRequestDispatcher in Servlet?
The getRequestDispatcher() method of the Servlet Request interface returns the object of the Request Dispatcher. Now, open up the Eclipse Ide and let’s see how the RequestDispatcher interface is used to forward or include the response of a resource in a Servlet!
Is Servlet a framework?
In contrast, Struts and the Spring MVC Framework are action-oriented frameworks that provide a thinner abstraction layer over the servlet API….At a glance.
| Action-based frameworks: | Apache Struts, Spring MVC |
|---|---|
| Web template systems: | Apache Tiles, SiteMesh, Thymeleaf |
What is Servlet and how it works?
Servlets are the Java programs that runs on the Java-enabled web server or application server. They are used to handle the request obtained from the web server, process the request, produce the response, then send response back to the web server. Properties of Servlets : Servlets work on the server-side.