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Exam Code: 1T6-540 Practice test 2023 by Killexams.com team
Advanced Troubleshooting with InfiniStream Network Mgmt
Network-General Troubleshooting information
Killexams : Network-General Troubleshooting information - BingNews https://killexams.com/pass4sure/exam-detail/1T6-540 Search results Killexams : Network-General Troubleshooting information - BingNews https://killexams.com/pass4sure/exam-detail/1T6-540 https://killexams.com/exam_list/Network-General Killexams : Human error in network operations and how to deal with it

You might have been alarmed to read recently that half of all network problems are due to human error. Well, bad news. That’s true of the number of problems. If you look at the hours of degraded or failed operation, three-quarters of all of it is due to human error. Furthermore, the great majority of degraded or failed operation can be traced to four specific activities:

  • Fault analysis and response, which network professionals and their management say creates 36% of error-induced outage time
  • Configuration changes (attributed to 27% of error-induced outage time)
  • Scaling and failover tasks (attributed to 19% of error-induced outage time)
  • Security policies (attributed to 18% of error-induced outage time)

Not surprisingly, network professionals are eager to find remedies for each of the four primary culprits. Before that can happen, it’s important to understand why the human error occurs.

My research points to a handful of specific errors that are committed, and these errors are associated with more than one of the four activities. In fact, almost all the common errors can impact all of the activities, but it’s best to focus on those error conditions that are the major contributors to outage time. They are:

  • Events overwhelm the operations staff
  • Operations staff “loses the picture”
  • Cross-dependencies between IT/software configuration and network configuration
  • Incorrect, incomplete, and dated documentation
  • Troublesome gear
  • Under-qualified and under-trained staff

Event flood

The first of our error causes, cited as a problem by every enterprise I’ve talked with, is that events overwhelm the operations staff. Most planned improvements to network operations centers (NOC) focus on trying to reduce “event load” through things like root cause analysis, and AI tools (not generative AI) hold a lot of promise here. However, enterprises say that most of these overload errors are caused by lack of a single person in charge. Ops centers often go off on multiple tangents when there’s a flood of alerts, and this puts staff at cross-purposes. “If you divide your NOC staff by geographic or technical responsibility, you’re inviting colliding responses,” one user said. A NOC coordinator sitting at a “single pane of glass” and driving the overall response to a problem is the only way to go.

Losing the picture

Event floods relate to the second of our error causes: the operations staff “loses the picture,” which is reported by 83% of enterprises. In fact, NOC tools to filter errors or suggest root causes contribute to this problem by disguising some potential issues or creating tunnel vision among the NOC staff. According to enterprises, people making “local” changes regularly forget to consider the impact of those changes on the rest of the network. They suggest that before any configuration changes are made anywhere, even in response to a fault, the rest of the NOC team should be consulted and sign off on the approach.

Network/IT dependencies

Just over three-quarters of enterprises say that cross-dependencies between IT/software configuration and network configuration are a significant source of errors. Almost all of these users say that they’ve experienced failures because application hosting or configuration was changed without checking whether the changes could impact the network (the reverse is reported in only half that number). Overall, this source of human error is responsible for nearly all the problems with configuration changes and most of the problems with scaling and failover. Enterprises think that the best solution to this problem is to coordinate explicitly between IT and network operations teams on any changes in application deployment or network configuration.

Copyright © 2023 IDG Communications, Inc.

Mon, 21 Aug 2023 08:02:00 -0500 en text/html https://www.networkworld.com/article/3705033/human-error-in-network-operations-and-how-to-deal-with-it.html
Killexams : Your Nintendo Switch Won't Connect to the Internet? Here's What to Do No result found, try new keyword!If your Nintendo Switch still isn't connecting to Wi-Fi after the above, it's time to visit your Switch's internet connection options so you can determine where the problem lies. To do this, open the ... Fri, 18 Aug 2023 05:01:24 -0500 en-us text/html https://www.msn.com/ Killexams : Ten ways to fix Galaxy Note8 “Mobile Network Not Available” bug [troubleshooting guide] No result found, try new keyword!Today’s #GalaxyNote8 troubleshooting ... Normally, the current network settings will be overwritten automatically, thereby refreshing all network information. This is an effective way to deal ... Fri, 04 Aug 2023 19:52:00 -0500 en-US text/html https://thedroidguy.com/ten-ways-to-fix-galaxy-note8-mobile-network-not-available-bug-troubleshooting-guide-1083560 Killexams : IPNet: Inverse Problems Network

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Fri, 11 Nov 2022 06:54:00 -0600 en text/html https://www.helsinki.fi/en/researchgroups/inverse-problems/ipnet-inverse-problems-network
Killexams : Bitcoin Lightning Network is growing, but 3 major challenges remain

The Lightning Network is a layer-2 solution built on top of the Bitcoin blockchain, and its primary objective is to address the Bitcoin network’s scalability issues. It also allows for faster and cheaper transactions by facilitating off-chain payments through a network of payment channels. 

The Lightning Network has gained traction since its launch in 2018, hitting a total value locked of $140 million, but this is relatively small compared to Bitcoin’s (BTC) $580 billion market capitalization. However, this oversimplification disregards that this scaling solution focuses on instant transactions, not lending, yield farms or other activities that require staking.

Additionally, the number of nodes has grown by a mere 6% since June 2022. This suggests that there are significant reasons why it has not achieved mainstream adoption. Let’s take a look at a few of the factors influencing Lightning Network growth.

Channel balancing, finding liquidity and the associated costs impact network growth

If Lightning Network users wish to make a payment that exceeds their channel balance, they must find a well-funded node with a direct channel to the recipient to facilitate the transaction. This process can be challenging and time-consuming, especially if the recipient is not well connected within the Lightning Network.

Channel balancing requires users to manage the funds in their channels effectively. Rebalancing is automatic when using apps like the Phoenix or Breeze, but it adds complexity for mid-level users relying on their own nodes. According to Viktor Bunin, protocol specialist at Coinbase Cloud:

“This capital inefficiency at the edges for non-custodial users is a hard and annoying optimization problem, and it’s objectively worse than an account-based model with arbitrary transaction sizing. However, it’s not an unworkable problem.”

Besides the issue of optimizing the channels’ funding, there are also the associated costs of opening and closing channels, as it requires an on-chain transaction. That can create serious issues if the median fee surpasses $5 or $10, which would drastically limit the use for the lower-income population and disincentive the network capillarity.

The risk of development hiccups could be pushing potential users away

The Lightning Network is still under development, meaning it still faces certain security risks. One concern is that if a node goes offline, it becomes unable to process payments through the channels it is connected to. This disrupts the payment process until the node comes back online, potentially causing an inconvenience for users.

Bunin highlights that there are no offline methods for Lightning payments, but noncustodial wallets offer “clever workarounds” using background tasks in mobile devices. Still, this solution might present constraints if the device’s operating system limits the performance to preserve battery power.

Double-spending is a risk on any blockchain-based system, including the Lightning Network. This attack could emerge from a node being offline for too long, subsequently providing an incorrect state and returning coins to the other party. This risk emerges only if the user is not active to inform the “justice transaction” or hasn’t set up “watchtowers” to prove that a fraud is being committed when a channel closing is requested.

Dragging merchant adoption and user awareness

The widespread adoption of any payment system requires acceptance by a large number of merchants and high user awareness. However, the Lightning Network faces challenges in both areas.

Merchant adoption is limited due to complexities in integrating the Lightning Network into existing payment systems, concerns about Bitcoin’s price volatility and regulatory uncertainties. On the other hand, efforts are being made to increase merchant adoption through user-friendly point-of-sale systems and partnerships with payment processors.

For instance, Zeus and OpenNode are popular wallets that offer a user-friendly point-of-sale app for merchants. The app allows merchants to accept Lightning Network payments with a QR code or NFC scan.

Additionally, user awareness about the Lightning Network’s benefits and usage is still relatively low. Educating users about the advantages and ease of Lightning payments is essential to overcoming this limitation.

What is the future of the Bitcoin Lightning Network?

Besides the more obvious problems cited, including channel rebalancing and security risks, developers are working on payments that can be made when the receiver is offline, known as asynchronous (async).

An important milestone for this Bitcoin scaling solution has been its integration by the Binance exchange in July. The reduced fees for withdrawal are a major selling point in comparison to wrapped Bitcoin options available on competing blockchains. Coinbase CEO Brian Armstrong confirmed in August that the exchange is also looking forward to implementing Bitcoin’s Lightning network.

This layer-2 scaling solution holds immense potential to enhance Bitcoin’s transaction efficiency and scalability. As the technology matures and efforts are made to address these issues, the scaling solution may eventually gain broader acceptance and increased adoption.