Computer Network Tutorial

Introduction of Computer Network Types of Computer Network Network Topology Computer Networking Architecture Transmission Modes (Data Flow) Basic Networking Devices Integrate Services Digital Network (ISDN)

Model

OSI Model TCP/IP Model

Physical Layer

Digital Transmission Analog Transmission Transmission Media Switching

Data Link Layer

Error detection and Error correction Data Link Control Multiple Access Aloha

Network Layer

Network Layer - Logical Address Address Mapping Unicast Routing Protocol

Transport Layer

Process to Process Delivery User Datagram Protocol Transmission Control Protocol Stream Control Transmission Protocol Session Layer and Presentation Layer

Application Layer

Domain Name System Application Protocol E-mail Cryptography

Misc

Classes of Routing Protocols Classification of Routing Algorithms Controlled Access Protocols in Computer Networks Differences between IPv4 and IPv6 Fixed and Flooding Routing Algorithms Advantages and Disadvantages of Fibre Optics Cable APIPA Difference between Active and Passive FTP Fiber Optics and its Types Method of Joining and Fusion of Fiber Optic Cable Define Framing in Computer Network Disadvantages of Computer Network Mesh Topology Diagram in Computer Network Ring Topology in Computer Network Star Topology in Computer Networks 4G Mobile Communication Technology Advantages and Disadvantages of LAN Advantages and Disadvantages of MAN Advantages and Disadvantages of WAN Application Layer in OSI Model Cyclic Redundancy Check Example Data link layer in OSI model Difference between Transport and Network Layer Hamming Code Example Network Layer in OSI Model Session Layer in OSI Model Transport Layer in OSI Model Two Port Network in Computer Networks Uses of Computer Networks What is Computer Network What is Framing in a Computer Network Advantages and Disadvantages of Bus Topology Difference between Star Topology and Bus Topology Subnetting in Computer Network Subnetting Questions and Answers What is Bus Topology What is Network Topology and Types in Computer Networks Access Control in Networking Basic Characteristics of Computer Network Benefits of SOCKS5 Proxy in Computer Networks Computer Network viva Questions Difference between BOOTP and RARP Difference Between Network Topologies and Network Protocols Difference between NFC and RFID Difference Between Point-to-Point Link and star Topology Network Differences Between MSS and MTU Differences Between Trunk Port and Access Port Different Modes of Communication in Computer Networks MIME Protocol in Computer Networks Modes of Communication in Computer Networks Network Attack in Computer Network Port Address in Networking Simplest Protocol in Computer Network Sliding Window Protocol in Computer Network Stop And Wait Protocol in Computer Networks TCP 3-Way Handshake Process in Computer Networks What is a Proxy Server What is APPN What is ICMP Protocol What is Point-to-Point Protocol What is Port Address in Networking What is the HDLC Protocol What is VRRP Protocol Difference Between Analog and Digital Signals Difference Between Hub and Repeater Difference between Repeater and Switch Difference Between Transparent Bridge and Source Routing Bridge Source Routing Bridge in Computer Networks Transparent Bridge in Computer Networks Transport Protocol in Computer Networks Types of CSMA in Computer Networks What is Wired and Wireless Networking Network Security in Computer Network Disadvantages of Extranet Difference Between TELNET and FTP Define Protocol in Computer Networks Guided Transmission Media in Computer Network What is a Gateway in a Computer Network IGMP in Computer Networks LAN Protocols in Computer Networks MAN Meaning in Computer Modulation Techniques in Computer Networks Switching in DCN TCP/IP Applications What is IGMP? What is Modem in Networking What is Non-Persistent CSMA Difference between Cell Splitting and Cell Sectoring Forouzen Computer Network Open Loop and Closed Loop Congestion Control Types of Cluster Computing WAP-Wireless Access Point What are the elements of the Transport Protocol Difference between Gateway and Switch Flow Control in Data Link Layer Body Area Network Flooding in Computer Network Token Ring in Computer Networks VoIP in Computer Networks What is Infrared Transmission Congestion Control Techniques Forward Error Correction (FEC) Switching Techniques What is Telnet in Computer Network What are the Types of IPv4 Addresses IEEE 802.6 (DQDB) IEEE 802.15.4 Technology What is HDLC (High-level Data Link Control)? What is SMS Hubbing in Telecom? Circuit Switching in Computer Networks Communication Satellites in Computer Networks Features of HTTP Protocol IMAP4 (Internet Message Access Protocol) Internet Services How to Set up a Wireless Router Internetwork Routing in Computer Networks Distributed Computing System Features of GSM The 802.11 MAC Sublayer Protocol What is IEEE 802.3? What are Hubs and Switches in Computer Networks? What is Modem in a Computer Network? What is multicasting in Computer Networks? GSM -The Mobile Station What is Network Server? Slotted Aloha in Computer Network What is Ethernet in Computer Networks What is Arpanet? Radio Access Network (RAN) TCP 3-Way Handshake Process PING SWEEP (ICMP SWEEP) Print Server Private IP Address Security Services in Computer Networks Protocol Data Unit (PDU) CSMA with Collision Avoidance (CSMA/CA) What is Gateway in Computer Network? Advantages of Networking Data Link Layer Design Issues DHCP in Computer Networks Internet Security Association and Key Management Protocol (ISAKMP) What is Switch Hub? Telnet Full form in Networking Multimedia Systems Quality of Service in Computer Networks What is Carrier Sense Multiple Access (CSMA)? What is Circuit Switching What is Duplex Network? What is Web Protocol Network LAN Technologies Classes in Computer Network Low-Density Parity Check (LDPC) Wireless Internet Service Providers(Wisps) What is Handshaking? Cache Server What Is WSN Network? Check Sum Error Detection Linear Bus Topology Functions of the Transport Layer Infrared Transmission in Computer Networks Digital Signal in Computer Network Digital Data Transmission in Computer Networks Define Checksum with Example Computer Network Security Requirements Brust Errors in Computer Network Back Side Bus (BSB) 2-Dimension Parity Check in Computer Network Router and Brouter Microwave Transmission in Computer Networks Magnetic Media in Computer Network A One-Bit Sliding Window Protocol CDMA-Near-Far Problem Reference Models in Computer Networks Uni-cast, Broadcast, and Multicast in Computer Networks Uses Of Bridges in Computer Networks What are Gateways in Computer Network? How to Set Up a Home Network – A 7-Step Guide GSM in Computer Networks Multicast Routing Protocols in Computer Networks Network Components Types of Ethernet in Computer Networks BGP vs.EIGRP-What's the difference? Green Cloud Computing and its Strategies Packet Switching Router in Computer Network Advantages and Disadvantages of Routers ATM Network Automatic Repeat ReQuest (ARQ) Static Routing Algorithms in Computer Network TDMA – Technology Data Link Layer services provided to the Network Layer Transmission Impairments in Computer Networks Types of Modems What are Elementary Data Link Layer Protocols What is an Ad-hoc Network? What is the IEEE 802.11 Wireless LAN Standards? What Is Tunneling in Computer Networks? What is Twisted Pair Cable

Subnetting Questions and Answers
2023-03-21 01:06:52

Subnetting Questions and Answers

Q: What is subnetting in networking?

A: Subnetting is a technique used to divide a single network into multiple smaller networks, called subnets. This is done by borrowing bits from the host portion of an IP address and using them to create a subnet mask. The subnet mask is used to determine which portion of the IP address is the network address and which portion is the host address. By dividing a network into smaller subnets, it is possible to improve security, network management, and performance, as well as segment a network into different logical or physical segments.

Q: Why is subnetting used in networking?

A: Subnetting is used in networking for a variety of reasons. One of the main reasons is to improve security. By dividing a network into smaller subnets, it is more difficult for unauthorized users to access sensitive information. Subnetting also allows for more efficient use of IP addresses and makes it easier to manage and troubleshoot network issues. Additionally, subnetting can improve network performance by reducing network congestion and broadcast traffic. Subnetting also enables the easy expansion of a network as the organization grows and allows for the segmentation of a network into different logical or physical segments, each with its own security and performance requirements.

Q: How does subnetting work?

A: The process of subnetting involves borrowing bits from the host portion of an IP address and using them to create a subnet mask. The subnet mask is used to determine which portion of the IP address is the network address and which portion is the host address. By borrowing bits from the host portion of the IP address, it is possible to create multiple subnets from a single IP address range.

For example, consider an IP address of 192.168.1.1 with a subnet mask of 255.255.255.0. In this example, the first three octets (192.168.1) represent the network address and the last octet (1) represents the host address. By changing the subnet mask to 255.255.255.128, it is possible to create two subnets, one with IP addresses in the range of 192.168.1.1 - 192.168.1.127 and another with IP addresses in the range of 192.168.1.128 - 192.168.1.255.

Q: How many subnets can be created with a certain IP address range?

A: The number of subnets that can be created with a certain IP address range depends on the number of bits borrowed from the host portion of the IP address to create the subnet mask. The more bits borrowed, the fewer the number of subnets that can be created, but the more hosts per subnet. For example, if 8 bits are borrowed, the maximum number of subnets that can be created is 256, but the number of hosts per subnet will be limited to 2^8-2 = 254.Q: How does subnetting work?

A: The process of subnetting involves borrowing bits from the host portion of an IP address and using them to create a subnet mask. The subnet mask is used to determine which portion of the IP address is the network address and which portion is the host address. By borrowing bits from the host portion of the IP address, it is possible to create multiple subnets from a single IP address range.

For example, consider an IP address of 192.168.1.1 with a subnet mask of 255.255.255.0. In this example, the first three octets (192.168.1) represent the network address and the last octet (1) represents the host address. By changing the subnet mask to 255.255.255.128, it is possible to create two subnets, one with IP addresses in the range of 192.168.1.1 - 192.168.1.127 and another with IP addresses in the range of 192.168.1.128 - 192.168.1.255.

Q: How many subnets can be created with a certain IP address range?

A: The number of subnets that can be created with a certain IP address range depends on the number of bits borrowed from the host portion of the IP address to create the subnet mask. The more bits borrowed, the fewer the number of subnets that can be created, but the more hosts per subnet. For example, if 8 bits are borrowed, the maximum number of subnets that can be created is 256, but the number of hosts per subnet will be limited to 2^8-2 = 254.