1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Drupady [299]
2 years ago
11

In a block of addresses we know the IP address of one host is Roll no. Roll no. Roll no. Roll no./20.What is the first address a

nd the last address of this block? Find the number of addresses in the block?
Hint: if your roll no is 33 then your ip address will look like this: 33.33.33.33/20
Computers and Technology
1 answer:
lesya [120]2 years ago
7 0

Answer:

If there’s one topic that trips people up (both new and experienced) in the networking industry, it is that of Subnetting.

One of the reasons this happens is that one has to perform (mental) calculations in decimal and also binary. Another reason is that many people have not had enough practice with subnetting.

In this article, we will discuss what Subnetting is, why it came about, its usefulness, and how to do subnetting the proper way. To make this article as practical as possible, we will go through many examples.

Note: While subnetting applies to both IPv4 and IPv6, this article will only focus on IPv4. The same concepts explained here can be applied to IPv6. Moreover, subnetting in IPv6 is more of a want rather than a necessity because of the large address space.

IP address network

For example, any traffic with a destination IP address of 192.168.1.101 will be delivered to PC1, while traffic addressed to 192.168.1.250 will be delivered to SERVER.

Note: This is an oversimplification of things just for understanding sake and refers to Unicast (one-to-one) IPv4 addresses. Traffic sent to Multicast (one-to-many) and Broadcast (one-to-all) IP addresses can be delivered to multiple devices. Also, features like Network Address Translation (NAT) allow one IP address to be shared by multiple devices.

To help your understanding of IP addresses and subnetting, you need to resolve the following fact in your head: Computers think in binary, that is, 0s and 1s. Therefore, even though we see an IP address represented like 192.168.1.250, it is actually just a string of bits – 32 bits in total for IPv4 addresses.

To make them more readable for humans, IPv4 addresses are represented in dotted decimal notation where the 32 bits are divided into 4 blocks of 8 bits (also known as an octet), and each block is converted to a decimal number.

For example, 01110100 in binary is 116 in decimal:

A unicast IPv4 address such as 192.168.1.250 can be divided into two parts: Network portion and Host ID. So what does this mean? Well, IPv4 addresses were originally designed based on classes: Class A to Class E. Multicast addresses are assigned from the Class D range while Class E is reserved for experimental use, leaving us with Class A to C:

Class A: Uses the first 8 bits for the Network portion leaving 24 bits for host IDs. The leftmost bit is set to “0”.

Class B: Uses the first 16 bits for the Network portion leaving 16 bits for host IDs. The two leftmost bits are set to “10”.

Class C: Uses the first 24 bits for the Network portion leaving 8 bits for host IDs. The three leftmost bits are set to “110”.

Note: The range of Class A is actually 1-126 because 0.x.x.x and 127.x.x.x are reserved.

With these classes, a computer/device can look at the first three bits of any IP address and determine what class it belongs to. For example, the 192.168.1.250 IP address clearly falls into the Class C range.

Looking at the Host ID portion of the classes, we can determine how many hosts (or number of individual IP addresses) a network in each class will support. For example, a Class C network will ideally support up to 256 host IDs i.e. from 00000000 (decimal 0) to 11111111 (decimal 255). However, two of these addresses cannot be assigned to hosts because the first (all 0s) represents the network address while the last (all 1s) represents the broadcast address. This leaves us with 254 host IDs. A simple formula to calculate the number of hosts supported

Explanation: Final answer is Start address: 192.168.58.0 + 1 = 192.168.58.1

End address: 192.168.58.16 – 2 = 192.168.58.14

Broadcast address: 192.168.58.16 – 1 = 192.168.58.15

You might be interested in
A thick black line around the outside edge of a page is a _____.
Montano1993 [528]
B. Border. It borders the outer page.
7 0
3 years ago
Read 2 more answers
Since the 1960s, there have been five major generations, or cycles, of computing. Which represents those generations in order?
sergiy2304 [10]

Answer:a) Mainframes, miniframes, PCs, desktop Internet computing, mobile computing

Explanation: The hierarchy of the computers or computing are in the generation is:-

  • Mainframe:-designed for the execution of huge data processing , storage and execution.
  • Miniframe:-has similar functioning as the mainframe but on smaller scale and version.
  • Personal computer(PC):-It is designed for the individual purpose and according the need of the user.
  • Mobile computing:-computing that can be done on the mobile phone similar to the computing on the personal computer
  • Internet computing:-the computing of the mobile and computer system with the facility of the internet connectivity.

7 0
3 years ago
The type of operating system best suited to controlling a massive multiplayer online game is _____.
Nina [5.8K]

Answer:

Distributed

Explanation:

5 0
3 years ago
A computer is not connecting to certain network devices properly. the ip address information is as follows: ip address: 192.168.
larisa [96]
192.168 suggests class C networks which have a 24 bit netmask (255.255.255.0) but you haven't provided enough info, like the netmask of a working machine, to be definite.
3 0
3 years ago
An Acceptable Use Policy (AUP) are designed for the purpose of _____.
Vladimir79 [104]

Answer:

maximizing processing power

7 0
3 years ago
Other questions:
  • What are the five types of pointing devices?
    11·1 answer
  • What would I need to make the perfect music video
    10·1 answer
  • A paradigm innovation occurs when:
    6·1 answer
  • The amount of data is increasing exponentially over time. true or false.
    6·1 answer
  • What is the purpose of a mail merge field?
    9·2 answers
  • Apple was a pioneer in user interface development, introducing the _____, complete with mouse and screen icons, in the early 198
    7·1 answer
  • Saving a file as a new filename can be accomplished through the Save As dialog box.
    13·1 answer
  • What can a scientist do if he repeats and experiment and gets diffrent results?
    5·1 answer
  • I need help thanks please!
    8·2 answers
  • Question #2
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!