Extension of bootstrap protocol is known as ______.
Dynamic Host Configuration Protocol
Understanding Bootstrap Protocol (BOOTP) and its Extension
The question asks about the protocol that is considered an extension of the Bootstrap Protocol, commonly known as BOOTP.
BOOTP is a networking protocol used to automatically assign an IP address and supply other configuration parameters (like subnet mask, default gateway, DNS server) to network devices from a server. This allows a client device to boot up and configure itself on the network without requiring manual setup.
Why BOOTP Needed an Extension
While BOOTP was useful, it had limitations. One major limitation was that it used static configuration files. This meant that each device's configuration (like its IP address) had to be manually pre-configured on the server based on the device's hardware address (MAC address). This was manageable for smaller networks but became cumbersome for larger networks with many devices frequently joining or leaving.
Identifying the Extension Protocol
The need for a more dynamic and flexible method of network configuration led to the development of a new protocol. This new protocol aimed to:
- Dynamically allocate IP addresses from a pool.
- Provide a lease time for the allocated IP addresses.
- Offer more configuration options beyond just the basic IP address and gateway.
- Be backward compatible with BOOTP to facilitate migration.
This protocol is the Dynamic Host Configuration Protocol (DHCP).
Dynamic Host Configuration Protocol (DHCP)
DHCP is the standard protocol used today for assigning dynamic IP addresses and other network configuration information to devices. It works on the client-server model. A client device requests configuration information from a DHCP server, which then assigns an available IP address and provides other relevant settings. DHCP built upon the framework of BOOTP but added dynamic address allocation and lease management, making it a significant improvement and a direct extension.
Let's look at the options provided:
- Dynamic Host Configuration Protocol (DHCP): This protocol is the widely recognized successor and extension of BOOTP, designed to overcome its limitations by providing dynamic IP address allocation and more flexible configuration.
- Direct Source Routing Protocol: This is a routing protocol, not directly related to client network configuration or an extension of BOOTP.
- Dynamic Source Routing Protocol: This is also a routing protocol, specifically for wireless mesh networks, and not an extension of BOOTP.
- Direct Host Configuration Protocol: This is not a standard or recognized networking protocol related to BOOTP.
Based on the functionality and historical development of network protocols, the Dynamic Host Configuration Protocol (DHCP) is the extension of the Bootstrap Protocol (BOOTP).
| Feature | BOOTP | DHCP |
|---|---|---|
| IP Address Allocation | Static (based on MAC address) | Dynamic (from a pool), Automatic, Manual |
| Configuration | Basic (IP, gateway, server) | Extensive (IP, gateway, DNS, subnet mask, lease time, etc.) |
| Address Management | No concept of lease time | Uses address leases (temporary assignments) |
| Complexity | Simpler | More complex |
| Backward Compatibility | No (DHCP client can get info from BOOTP server) | Yes (DHCP servers can respond to BOOTP requests) |
Therefore, the extension of the Bootstrap Protocol is the Dynamic Host Configuration Protocol.
Revision Table: Network Configuration Protocols
Understanding protocols like BOOTP and DHCP is crucial for network fundamentals. Review their primary functions and differences.
- BOOTP: Bootstrap Protocol, static IP assignment, early network configuration protocol.
- DHCP: Dynamic Host Configuration Protocol, dynamic and automatic IP assignment, successor and extension of BOOTP.
Additional Information: DHCP and Network Configuration
DHCP is a fundamental service in modern networks. It uses port 67 (server) and 68 (client) for UDP communication. The process typically involves a four-step exchange (DORA: Discover, Offer, Request, Acknowledge) between the DHCP client and server. DHCP simplifies network administration significantly, especially in environments with many mobile devices or frequent changes in network connectivity.
Important Questions from Miscellaneous
A stone is thrown horizontally from the top of a 20 m high building with a speed of 12 m/s. It hits the ground at a distance R from the building. Taking g = 10 m/s2 and neglecting air resistance will give :
A sphere of volume V is made of a material with lower density than water. While on Earth, it floats on water with its volume f1V (f1 < 1) submerged. On the other hand, on a spaceship accelerating with acceleration a < g (g is the acceleration due to gravity on Earth) in outer space, its submerged volume in water is f2V. Then:
A railway wagon (open at the top) of mass M1 is moving with speed v1 along a straight track. As a result of rain, after some time it gets partially filled with water so that the mass of the wagon becomes M2 and speed becomes v2. Taking the rain to be falling vertically and the water stationery inside the wagon, the relation between the two speeds v1 and v2 is :
Consider the following statements:
1. Distance between the longitudes becomes zero on North Pole and South Pole.
2. Distance between the longitudes is maximum on the Equator.
3. Number of longitudes is more than number of latitudes.
Which of the statements given above is/are correct?
One block of 2⋅0 kg mass is placed on top of another block of 3⋅0 kg mass. The coefficient of static friction between the two blocks is 0⋅2. The bottom block is pulled with a horizontal force F such that both the blocks move together without slipping. Taking acceleration due to gravity as 10 m/s2, the maximum value of the frictional force is :
