Q. Given the IP address 201.14.78.65 and the subnet mask 255.255.255.224. What is the subnet address ?

View solution

Q. If the data unit is 111111 and the divisor is 1010. In CRC method, what is the dividend at the transmission before division ?

View solution

Q. If user A wants to send an encrypted message to user B. The plain text of A is encrypted with the .................

View solution

Q. A ............... can forward or block packets based on the information in the network layer and transport layer header.

View solution

Q. Which of the following addresses is used to deliver a message to the correct application program running on a host?

View solution

Q. In substitution, a character in the plaintext is always changed to the same character in the ciphertext, regardless of its position in the text.

View solution

Q. In classful addressing, the IP address 190.255.254.254 belongs to

View solution

Q. In hierarchical routing with 4800 routers, what region and cluster sizes should be chosen to minimize the size of the routing table for a three layer hierarchy?

View solution

Q. In IPv4 header, the field is needed to allow the destination host to determine which datagram a newly arrived fragment belongs to.

View solution

Q. Using data p=3, q=11, n=pq, d=7  in RSA algorithm find the cipher text of the given plain text SUZANNE

View solution

Q. A data file of 1,00,000 characters contains only the characters g-l, with the frequencies as indicated in table. Using the variable-length code by Huffman codes, the file can be encoded with

View solution

Q. In a fully connected mesh network with n devices, there are ................ physical channels to link all devices.

View solution

Q. The baud rate of a signal is 600 baud/second. If each signal unit carries 6 bits, then the bit rate of a signal is .................

View solution

Q. Match the following:

a. Data link layer                      i. Flow control
b. Network layer                       ii. Node to node delivery
c. Transport layer                     iii. Mail services
d. Application layer                 iv. Routing

Codes:
      a   b    c   d

View solution

Q. An image is 1024∗800 pixels with 3 bytes/pixel. Assume the image is uncompressed. How long does it take to transmit it over a 10-Mbps Ethernet ?

View solution

Q. The .............. measures the relative strengths of two signals or a signal at two different points.

View solution

Q. Which one of the following media is multidrop?

View solution

Q. What is the baud rate of the standard 10 Mbps Ethernet ?

View solution

Q. Binary symmetric channel uses

View solution

Q. Hamming distance between 100101000110 and 110111101101 is

View solution