Tag Archives: CCNA

Day-16: Ethernet.

When Ethernet was developed, if you talk about 1970’s , It was developed by Xerox but later on they added another few partners like DEC and Intel into this project and the name they kept as DIX . Ethernet Features. Ethernet – Most common LAN technology used today. Supports data bandwidths of 10, 100, 1000, 10,000, 40,000, and… Read More »

Day-15: Number Conversion.

Decimal to Binary Conversion. Decimal to binary calculation steps, Let’s calculate a decimal value 12345 to the binary numbers. Divide by the base 2 to get the digits from the remainders: Divisionby 2 Quotient The remainder (Digit) Bit # (123456)/2 61728 0 0 (61728)/2 30864 0 1 (30864)/2 15432 0 2 (15432)/2 7716 0 3 (7716)/2 3858 0… Read More »

Day-14:Binary Number System.

In a Computer system, computers only understand the binary. The binary system is the representation of numbers in terms of 0’s and 1’s. The Binary Number System is generally used in computer languages like Java and C++ etc. This is due to the fact that the computer only understands the binary language that is 0 or 1. All… Read More »

Day-13: DHCP & DNS.

DHCP stands for Dynamic Host Configuration Protocol. This protocol is used to assign the IP address dynamically to devices on a network. DHCP also assigns the subnet masks, default gateway, and DNS IP addresses. We can configure the DHCP server to a Router or a computer can be configured as a DHCP server.| How Does DHCP Work? Instead… Read More »

Day-12: Communication Types.

In network communication , there are normally 3 types of communication . Unicast:-One-to-one communication.Multicast:One-to-many communication.Broadcast:One-to-all communication. Unicast Communication Unicast is basically the packet is going to be destined to a particular destination .Unicast addresses uniquely identify a machine’s interface. A packet sent to a unicast address is only received by the interface that has that address associated with… Read More »

Day-11: Introduction to IPv4.

IP resides in the network layer . basically the IP is used for identifying the devices in the network. IP is a routed protocol. IP is a connectionless protocol, which means it does not check whether the destination has received the packet or not .and it does not check if the destination is exist or not .in simply… Read More »

Day-10:Encapsulation & Decapsulation

Each and every layer has some identity in the network communication . when the devices are communicating over the network, Each and every layer are going to treat those data separately according to their own job. Each layer adds some additional bits into the packet for the identity of the layer. Now let’s see it. Encapsulation: As each… Read More »

Day-9: OSI Model Part-3

Layer-4: Transport Layer. Transport Layer is responsible for end-to-end communication between the two devices. This includes taking data from the session layer and breaking it up into chunks called segments before sending it to layer 3. The transport layer on the receiving device is responsible for reassembling the segments into data so that the session layer can understand.… Read More »

Day-8: OSI Model Part-2

The OSI model has seven layers. Let’s start at the Application layer. Layer-7:Application Layer. An application layer where the user interacts with the network communication means the user prompts the network-aware application(Firefox, Google Chrome, Outlook, etc.) to access something over the network Like web applications, Emails, File transmissions, etc. Lots of protocol works on Application layer Like Http,Https,FTP,… Read More »

Day-7: OSI Model Part-1

What is Protocol? Before we understand the OSI Model we need to understand the protocol. A protocol is a set of rules of operation it means there is something that has been predefined or pre-programmed In order for computers to exchange information, there must be a preexisting agreement as to how the information will be structured and how… Read More »