Answer: A VLAN (Virtual Local Area Network) is a logical grouping of devices within a network, regardless of their physical location. It allows for the segmentation and isolation of broadcast domains.
Answer: Routers link different computer networks by forwarding data packets. In the OSI model, it belongs to the network layer.
Answer: Hub: Operates at the physical layer and simply broadcasts data to all connected devices. Switch:
Operates at the data link layer, filters, and forwards data based on MAC addresses. Router: Operates at the network layer, and forwards data between different networks based on IP addresses.
Answer: OSPF (Open Shortest Path First) is a dynamic routing protocol used to exchange routing information between routers within an autonomous system.
Answer: NAT (Network Address Translation) is used to map private IP addresses to a single public IP address, allowing multiple devices within a private network to share a single public IP for internet access.
Answer: TCP (Transmission Control Protocol) is connection-oriented, provides reliable and ordered delivery of data. UDP (User Datagram Protocol) is connectionless, provides faster but unreliable delivery of data.
Answer: ARP (Address Resolution Protocol) is used to map a known IP address to a MAC address in a local
network.
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Answer: The OSI (Open Systems interconnection) model is a conceptual framework that standardizes the functions of a telecommunication or computing system into seven abstraction layers.
Answer: An IP address is divided into network and host portions by a subnet mask, which is a 32-bit number.
It identifies a host's IP address and the network's address.
Answer: A default gateway is a router on a network that serves as an entry and exit point for data packets traveling between different networks.
Answer: A broadcast storm occurs when a network system is overwhelmed with continuous broadcast or multicast traffic, degrading network performance.
Answer: A bridged Ethernet local area network is guaranteed to maintain a loop-free topology by using STP.
Answer: DHCP (Dynamic Host Configuration Protocol) is used to dynamically assign IP addresses and other
network configuration information to devices on a network.
Collision Domain: The set of devices on a network segment where collisions can occur. Broadcast Domain:
The set of all devices that receive broadcast frames originating from any device within the group.
Answer: HSRP is a Cisco proprietary redundancy protocol that provides high network availability by allowing two or more routers to work together in order to represent a single IP address for a particular network.
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Answer: To establish a reliable connection between two devices, the three-way handshake is used. It involves SYN, SYN-ACK, and ACK packets to synchronize sequence numbers.
Answer: An ACL is a set of rules applied to a router interface to control the traffic entering or exiting a network.
Answer: A Layer 3 switch is basically a switch that can perform routing functions in addition to switching
Answer: VTP is a Cisco proprietary protocol used to manage VLAN configurations across a network of switches.
Answer: An Internet Protocol (IP) network uses the ping command to determine if a host is reachable and to. measure the round-trip time of messages sent from a source host to a destination host.
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Answer: ARP (Address Resolution Protocol) is used to map an IP address to a MAC address in a local network.
Answer: A MAC (Media Access Control) address is a unique identifier assigned to a network interface card (NIC) for communications at the data link layer of a network segment.
Answer: The traceroute command is used to trace the route that packets take to reach a destination, showing the IP addresses of routers along the way.
Answer: The 802.10 standard defines a protocol for carrying VLAN (Virtual Local Area Network) information over Ethernet networks.
Answer: The BGP protocol is a standardized exterior gateway protocol for exchanging routing and reachability information between autonomous systems (ASes).
Answer: DHCP snooping is a security feature that filters and regulates DHCP traffic within a network by monitoring and controlling the responses from DHCP servers.
Answer: The ARP cache is a table that maps IP addresses to MAC addresses in a local network. It is used to store ARP (Address Resolution Protocol) information.
Answer: NAT (Network Address Translation) and PAT (Port Address Translation) are used to map private IP addresses to a public IP address, allowing multiple devices to share a single public IP for internet access.
Answer: Subnetting is the process of dividing a larger network into smaller, more manageable sub-networks to improve performance and security.
Answer: VLAN trunking allows the transmission of VLAN information between switches, enabling devices on d ifferent switches to be part of the same VLAN.
Answer: The loopback address (127.0.0.1) is used to test the network interface of a device. It allows a device to send and receive data to itself for diagnostic purposes.
Answer: RSTP is an enhancement of the Spanning Tree Protocol (STP) that provides faster convergence in the event of network topology changes.
Answer: Ether Channel Combine bandwidth of multiple physical ports into a single logical Port known as a Port-channel The main purpose is to get more bandwidth and availability.
Answer: GRE (Generic Routing Encapsulation) tunnels are used to encapsulate a wide variety of network layer protocols into point-to-point connections.
Answer: An ACL is a set of rules used to filter network traffic and provide security by controlling access to network resources.
Answer: HSRP is a Cisco proprietary protocol that provides high network availability by allowing two or more routers to work together to represent a single IP address for a particular network.
Answer: A subnet mask is used to divide an IP address into network and host portions, allowing for the creation of sub-networks.
Answer: A broadcast storm occurs when a network is flooded with broadcast or multicast traffic, leading to network congestion and performance degradation.
Answer: Routing is a process of establishing the routes that data packets take on their way to the destination. itis a process of selecting a path across one or more networks to move a data packet from source to destination.
Answer: VTP is a Cisco proprietary protocol used to manage VLAN configurations across a network of switches, simplifying VLAN administration.
Answer: STP is a network protocol that prevents loops in Ethernet networks by blocking redundant paths, ensuring a loop-free topology.
Answer: NAT overload, also known as PAT (Port Address Translation), allows multiple devices in a private network to share a single public IP address by using different port numbers.
Answer: IPsec (Internet Protocol Security) is a suite of protocols used to secure Internet Protocol (IP) communications by authenticating and encrypting each IP packet within a communication session.
Answer: Subnetting is the process of dividing a larger network into smaller sub-networks to improve performance, security, and manageability.
Answer: VLAN pruning is a feature that allows a switch to dynamically prune or remove unnecessary VLANS from trunk links, reducing unnecessary traffic.
Answer: BGP is a standardized exterior gateway protocol used to exchange routing and reachability information between autonomous systems on the internet.
Answer: The OSI! model is a conceptual framework that standardizes the functions of a telecommunication or ‘computing system into seven abstraction layers, from physical to application.
Answer: EIGRP is a Cisco proprietary routing protocol used to exchange routing information between routers within an autonomous system, providing fast convergence and efficient use of bandwidth.
Answer: A default gateway is a router that is used when a device needs to communicate with a host on another network, serving as the exit point for traffic.
Answer: The TCP/IP model is a conceptual framework that standardizes the functions of a telecommunication or computing system into four abstraction layers, from link to application. itis the basis for the internet protocol suite.
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9th JANUARY
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MON & FRI (5 WEEKS)Upcoming Regular Batch
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8:30 PM to 10:30 PM (IST)
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29th NOVEMBER
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MON & FRI (5 WEEKS)Batch Started
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8:30 PM to 10:30 PM (IST)
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I have joined online class for the first time and I'm highly impressed by the teaching methodology of the institute. I have recently completed my CCNA course online and I would like to thanks Mr Zameer Sir My experience in Attari classes. It was fantastic journey from 1st lecture to last lecture. Management of Attarri classes is very nice. I would like to say big thank you to Zameer Sir for sharing their knowledge Looking forward to gain knowledge on more courses with Attari Classes.
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