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A system has n resources R0,…,Rn-1, and k processes P0,…..Pk-1. The implementation of the resource request logic of each process Pi. is as follows: if (i%2 == 0) { if (i
A sender S sends a message m to receiver R, which is digitally signed by S with its private key. In this scenario. One or more of the following security violations can take place. 1) S can launch a birthday attack to replace m with a fraudulent message. 2) A third-party attacker can launch a birthday attack to replace m with a fraudulent message.  3) R can launch a birthday attack to replace m with a fraudulent message. Which of the following are possible security violations?
Once the TCP/IP connection has been established, the browser sends an HTTP GET request over the connection to the remote server. The remote server finds the resource and returns it in an HTTP Response, the status of which is 200 to indicate a good response.
Consider the following policies for preventing deadlock in a system with mutually exclusive resources. I. Processes should acquire all their resources at the beginning of execution. If any resource is not available, all resources acquired so far are released II. The resources are numbered uniquely, and processes are allowed to request for resources only in increasing resource numbers III. The resources are numbered uniquely, and processes are allowed to request for resources only in decreasing resource numbers IV. The resources are numbered uniquely. A process is allowed to request only for a resource with resource number larger than its currently held resources Which of the above policies can be used for preventing deadlock?
The HTTP request message is sent in _________ part of three-way handshake.
Which of the following is present in both an HTTP request line and a status line?
Consider the three-way handshake mechanism followed during TCP connection establishment between hosts P and Q. Let X and Y be two random 32-bit starting sequence numbers chosen by P and Q respectively. Suppose P sends a TCP connection request message to Q with a TCP segment having SYN bit = 1, SEQ number = X, and ACK bit = 0. Suppose Q accepts the connection request. Which one of the following choices represents the information present in the TCP segment header that is sent by Q to P?
The message bit sequence to a DPSK modulator is 1, 1, 0, 0, 1, 1. The carrier phase during the reception of the first two message bits is π, π. The carrier phase for the remaining four message bits is
In the communication process, a receiver is the person who encodes an idea. message interference. a message pathway. the person who decodes a message.
Match List I with List II. List I List II Elements of Communication Characteristic feature (A) Source (I) Means used to convey the message (B) Receiver (II) Set of verbal and nonverbal cues from a source (C) Message (III) A person who interprets the message (D) Channel (IV) A person or an event which provides verbal / non verbal cues. Choose the correct answer from the options given below: