The Physical Layer is responsible for the transmission of raw bit streams over a physical medium. It deals with the physical characteristics of the network medium, such as voltage levels, timing, data rates, physical connectors, and cable specifications. It ensures that bits are sent and received correctly between directly connected devices.
An organization has a Class B network and wishes to form subnets for 64 departments. The subnet mask would be - Ans: B Understanding IP addressing, network classes, subnetting, and how to calculate subnet masks based on the number of required subnets is crucial. - Class B departments require 64 unique subnet IDs. - Bits required for subnets $2^n \ge \text{number of subnets}$. $2^6 = 64$. So, 6 bits are needed for subnetting. - Borrowing bits These 6 bits are borrowed from the host portion of the default Class B address. In a Class B address, the first 16 bits are network, and the last 16 bits are host. The host portion is `00000000.00000000`. - Subnetting the third octet The 6 bits are taken from the first available bits of the host portion, which are in the third octet. - New subnet mask The first 8 bits of the third octet are now part of the network/subnet ID. The first 6 bits of the third octet become '1's, and the remaining 2 bits are for the host. - Calculation `11111111` (first octet) `11111111` (second octet) `11111100` (third octet) `00000000` (fourth octet). - Decimal conversion `11111100` binary = 252 decimal. 103. The physical layer is responsible for -
Asked in Programmer Exam 2024 · Topic: Data Communication and Transmission Modes (Components of Data Communication)
Show answer
Answer: B. Bit-by-bit delivery
More Information and Communication Technology questions
- What is the role of DNS? It is best described as - - Question not attempted
- If a Class B network on the internet has a imum number of hosts per subnet? - Question not attempted
- The Address Resolution Protocol (ARP) is used for - - Question not attempted
- What network property is achieved through the use of the Automatic Repeat reQuest (ARQ) mechanism?
- The size of the 'total length field' of IPv4 datagram is - - Question not attempted
- Which of the following is not related to data link layer? - Question not attempted
- ICMP protocol is a .................................. layer protocol. - (5) Question not attempted
- Network Allocation Vector (NAV) is associated with which of the following MAC technologies? - (5) Question not attempted
All 1,360 Information and Communication Technology questions →