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Computer Networking

Computer networks are collections of computers which are connected together in order to communicate and transfer information. Questions about computer networks, networking protocols, and how to set them up belong here.

500 Questions

What NIC stand for?

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NIC stands for "Network Interface Card." It is a hardware component that allows a computer to connect to a network and communicate with other devices.

What characteristics of single mode fiber optics?

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Single mode fiber optics have a small core size (around 9 microns) that allows only one mode of light to travel through, reducing signal distortion. They have a higher bandwidth and can transmit data over longer distances compared to multi-mode fibers. Single mode fibers are commonly used in long-distance communication systems like telecommunication networks and data centers.

What are the weaknesses of a switch?

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Some weaknesses of switches include potential security vulnerabilities if not properly configured, limited scalability compared to routers in larger networks, and susceptibility to broadcast storms that can overload the network.

Packet is a form of protection that allows you to view each packet that comes through the computer?

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Packet filtering is a form of network security that inspects each packet of data that passes through a computer network to determine whether it should be allowed through or not. This helps in controlling the flow of data and preventing unauthorized access or malicious content from entering the network.

A list that organizes resources and associates them with their characteristics?

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You can create a table or spreadsheet to organize resources and their characteristics. List the resources in one column and their corresponding characteristics in the adjacent columns. This format allows you to easily view and compare the different resources and their attributes.

What do RFC 349 and RFC 1700 have in common?

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Both RFC 349 and RFC 1700 have an Assignment number and both have wide standard functions. They also offer applications that offer link, socket, port, and protocol.

Describe three different types of switching fabrics commonly used in packet switches?

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  1. Shared memory switching: Data is temporarily stored in a common memory pool, which allows for fast switching between input and output ports.
  2. Crossbar switching: A matrix of switches is used to create direct connections between input and output ports, allowing for simultaneous transmission of multiple packets.
  3. Clos network: A non-blocking architecture that connects multiple stages of switches in a hierarchical manner to provide high scalability and flexibility for routing packets.

Active Directory organizes multiple domains hierarchically in a domain?

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Active Directory organizes multiple domains hierarchically in a forest. A forest is the top-level structure in Active Directory that contains multiple domains. Each domain within a forest has its own security policies and trust relationships with other domains in the forest.

How to terminate a cat 5 cable?

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To terminate a Cat 5 cable, you will need to strip back the outer jacket to expose the twisted pairs inside. Separate and arrange the twisted pairs in the correct order according to the wiring standard you are using (T568A or T568B). Trim the excess wire, insert the wires into an RJ45 connector, and use a crimping tool to secure the wires in place. Repeat for the other end of the cable if needed.

Sequence the steps in the Port Address translation process?

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  1. Initial packet arrives at the NAT device.
  2. NAT device checks its mapping table to find an existing mapping for the source IP address and port.
  3. If a mapping is found, the NAT device modifies the source port number in the packet header to the corresponding mapped port number.
  4. Finally, the packet is forwarded to the destination with the modified port number.

What do NIC stand for?

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NIC stands for Network Interface Card. It is a hardware component that allows a computer to connect to a network, either wired or wireless, and communicate with other devices on the network.

Where can one find a networking solution?

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Certainly! Here are various sources where you can find a networking solution, including NetraClouds:

Technology Vendors

Netraclouds: Through cutting-edge innovation, advanced technology, and seamless digitalization, we redefine business experiences, driving growth and efficiency in an ever-evolving landscape.

Cisco Systems: Offers a wide range of networking solutions from small business to enterprise level.

Juniper Networks: Provides networking equipment and services for both enterprises and service providers.

Aruba Networks (a Hewlett Packard Enterprise company): Specializes in wireless networking and network management solutions.

Ubiquiti Networks: Known for cost-effective and scalable networking solutions, ideal for small to medium businesses.

Difference between coaxical cable and fiber optics?

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Coaxial cables transmit electrical signals using a copper conductor surrounded by insulation and a shield, suitable for short to medium distances. Fiber optics use light signals transmitted through a glass or plastic fiber, capable of higher bandwidth and longer distances due to lower signal degradation. Fiber optics are also immune to electromagnetic interference compared to coaxial cables.

What Cable consists of color-coded pairs of insulated copper wires of each with a diameter of 0.4 to 0.8 mm?

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This is a description of twisted pair cable, which is commonly used in network and telephone wiring. The color-coding helps to identify the pairs and reduce crosstalk. The copper wires are insulated to prevent short-circuits and maintain signal integrity.

What is the advantage of using switches rather than hubs?

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Switches operate at the data link layer (Layer 2) of the OSI model and make forwarding decisions based on MAC addresses, leading to faster and more efficient data transmission compared to hubs, which operate at the physical layer (Layer 1) and simply broadcast data to all connected devices. Switches provide dedicated bandwidth to each port, reducing collisions and enhancing network performance.

What are the commonly used connector for fiber-optics?

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Some commonly used connectors for fiber-optics are SC (Subscriber Connector), LC (Lucent Connector), ST (Straight Tip), and MTP/MPO (Multi-Fiber Push On). Each connector type has its own unique design and advantages for different applications.

The main purpose of a peer review committee is to?

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evaluate and provide feedback on research or articles submitted for publication. They help ensure the quality and integrity of the work being published by assessing its validity, rigor, and relevance to the field.

Peer review is more important than the presentation of the scientific paper because?

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peer review ensures that the research is evaluated by experts in the field who provide valuable feedback and help ensure the quality and reliability of the research findings. The feedback from peer review helps researchers improve the quality of their work and promotes transparency in the scientific process. It also helps prevent the dissemination of misleading or flawed research.

Is a flexible network for the internal support of a sponge?

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Yes, a flexible network of protein fibers called spongin provides structural support within a sponge's body. This network helps maintain the sponge's shape and allows for water flow and nutrient exchange through its pores.

What to do when download freezes?

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You hold down the center buttons for about 3 seconds and "Voice Control" will show up keep holding down the button then your recent song will play. Then turn it on and off 2 times then go your app store and you see your app is installed.

What is the minimum maximum size of ICMP packet?

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The minimum size of an ICMP packet is 8 bytes, which includes the 8-byte ICMP header without any additional data. The maximum size of an ICMP packet is 65,535 bytes, which includes the maximum payload that can be carried within an IPv4 packet.

The strongest tunneling protocol is?

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OpenVPN is often considered one of the strongest tunneling protocols due to its robust encryption and secure authentication methods. It is widely used for creating secure point-to-point or site-to-site connections over the internet.

IS 100 watt amp big enough to play shows?

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It depends on the size of the venue and the type of music being played. A 100 watt amp could be sufficient for small to medium-sized venues, especially if it is mic'd through a PA system. For larger venues or louder genres of music, a more powerful amp may be needed.

What should you do if the charger for your laptop isn't working?

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If the charger for your laptop isn't working, first try using a different power outlet or power source to rule out any issues with the outlet. If that doesn't work, try using a different charger or cable to see if the issue is with the charger itself. If the problem persists, consider replacing the charger or seeking professional help to diagnose the issue.

What is a least significant bit?

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The least significant bit (LSB) is the bit in a binary number that represents the smallest value, typically 1 or 0. It is located at the rightmost position in the binary representation of a number and has the least influence on the overall value of the number. The LSB is crucial in tasks like data encryption and digital signal processing.