This document discusses various tools and techniques for testing and troubleshooting networks. It describes loopback tests, network monitors, LAN testers, cable testers, protocol analyzers, and troubleshooting models for isolating network issues. Common commands like ipconfig, netstat, nbtstat and route are also summarized for examining TCP/IP settings and troubleshooting connectivity problems.
I have discussed about the common problem of network issues of a computer . How we can find out what is the bug on our network wizerd and what should we do for that perticular problem . I also discussed about the physical hardware problem and how to find out what the problem is and what is the way to find the solution for it . If you think for a problem that i am finished or my machine is finished it is your foolishness . So you can read my slides and can find out the problem and their solution .
I have discussed about the common problem of network issues of a computer . How we can find out what is the bug on our network wizerd and what should we do for that perticular problem . I also discussed about the physical hardware problem and how to find out what the problem is and what is the way to find the solution for it . If you think for a problem that i am finished or my machine is finished it is your foolishness . So you can read my slides and can find out the problem and their solution .
After this module the learners will be able to . . .
○ Enumerate and discuss the tools and equipment use in computer networking.
○ Discuss the color scheme of T568A and T568B standardization of network cabling system.
CSS L11 - INTRODUCTION TO COMPUTER NETWORKSMarvin Bronoso
CSS L11 - INTRODUCTION TO COMPUTER NETWORKS
After this lesson module the student will be able to . . .
○ Understand the function of computer network.
○ Discuss how the computer network works.
○ Enumerate and explain the different devices use in computer networking.
○ Differentiate the types of computer network
Basic idea about router. Router configuration. This is our team project. From this slide we can learn what is router configuration and application of router. We also learn the security of router.
CSS LO6 - PREPARING AND INSTALLING OPERATING SYSTEMMarvin Bronoso
CSS LO6 - PREPARING AND INSTALLING OPERATING SYSTEM
LEARNING OUTCOME:
AT THE END OF THIS LESSON THE LEARNERS WILL BE ABLE TO . . .
1.Understand the function of Operating System
2. Learn the Minimum requirement for Windows 7 operating system.
3. Learn the procedure in creating and preparing the OS.
3. Learn and experience to install Window 7 operating system.
4. Discover and prepare the basic applications needed to be installed.
After this module the learners will be able to . . .
○ Enumerate and discuss the tools and equipment use in computer networking.
○ Discuss the color scheme of T568A and T568B standardization of network cabling system.
CSS L11 - INTRODUCTION TO COMPUTER NETWORKSMarvin Bronoso
CSS L11 - INTRODUCTION TO COMPUTER NETWORKS
After this lesson module the student will be able to . . .
○ Understand the function of computer network.
○ Discuss how the computer network works.
○ Enumerate and explain the different devices use in computer networking.
○ Differentiate the types of computer network
Basic idea about router. Router configuration. This is our team project. From this slide we can learn what is router configuration and application of router. We also learn the security of router.
CSS LO6 - PREPARING AND INSTALLING OPERATING SYSTEMMarvin Bronoso
CSS LO6 - PREPARING AND INSTALLING OPERATING SYSTEM
LEARNING OUTCOME:
AT THE END OF THIS LESSON THE LEARNERS WILL BE ABLE TO . . .
1.Understand the function of Operating System
2. Learn the Minimum requirement for Windows 7 operating system.
3. Learn the procedure in creating and preparing the OS.
3. Learn and experience to install Window 7 operating system.
4. Discover and prepare the basic applications needed to be installed.
Explains what troubleshooting is, what skills are involved, and clears up some common misconceptions. Originally designed with IT Helpdesks in mind, but it could apply to any kind of troubleshooting.
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Wrote this a VERY long time ago! I always meant to revisit/revamp it, but never quite got round to it. But people seem to get value from it, so I'll leave it up :)
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Presenter: Lisa Bock - Pennsylvania College of Technology
Most network administrators are well-versed in hardware, applications, operating systems, and network analysis tools. However, many are not trained in analyzing network traffic. Network administrators should be able to identify normal network traffic in order to determine unusual or suspicious activity. Network packet analysis is important in order to troubleshoot congestion issues, create firewall and intrusion detection system rules, and perform incident and threat detection. This hands-on presentation will review fundamental concepts necessary to analyze network traffic, beginning with an overview of network analysis, then a review the TCP/IP protocol suite and LAN operations. Participants will examine packet captures and understand the field values of the protocols and as to what is considered normal behavior, and then examine captures that show exploits, network reconnaissance, and signatures of common network attacks. The program will use Wireshark, a network protocol analyzer for Unix and Windows, to study network packets, look at basic features such as display and capture filters, and examine common protocols such as TCP, HTTP, DNS, and FTP. Time permitting, the presentation will provide suggestions on how to troubleshoot performance problems, conduct a network baseline, and how to follow a TCP or UDP stream and see HTTP artifacts. Participants should have a basic knowledge of computer networking and an interest in the subject.
Network traffic analysis with cyber securityKAMALI PRIYA P
We are students from SRM University pursuing B.TECH in Computer Science Department. We took a small initiative to make a PPT about how network traffic can be analyzed through Cyber Security. We have also mentioned the known network analyzers and future scope for network traffic analysis with cyber security.
Cisco CCNA exam topics are added to a ppt and shard on this ppt. For more details about Networking Fresher jobs, Fresher Networking Jobs and careers visit www.jobvisions.blogspot.in
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Biological screening of herbal drugs: Introduction and Need for
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This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
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Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
2. Network troubleshooting Tools
• The various tools available for checking the network are:
– Software Tools
– Hardware Tools
– Touchy Tools
3. Loopback Test
• Signal is transmitted and it echos back
• Echo signal compared with original signal
• Tests the transmission path and tools used for
transmission
• Traces a faulty node in network
• Requires a loopback plug
Chapter 4 3
4. Network Monitors
• Detect and display problems present in the network
• Provides data related to network traffic
• Analyze data traffic to determine various network
problems that can occur
5. LAN Tester - I
• Used to test 10, 100 and 1000 Base-
T Networks
• Consists of two units
– Main unit
• Indicates LAN device type i.e hub,
switch
• Determines speed of LAN and type of
link
– Remote Probe
• Used to locate faults in a cable
Chapter 4 5
6. LAN Tester - II
• Functions of LAN tester
– Verify PC to hub speed and data transmission
– Check hub to hub data transmission
– Determines any speed bottlenecks present on 10 and 100
Base-T LANs
– Continuously tracks LAN link
7. Cable Testers and Certifiers
• Checks electrical connections
• Determines if a short or open
circuit is present in the network
• Consists of a source of current,
volt meter and microcontroller
8. Time-Domain Reflectometers
• Locates fault in metallic cables
• Transmits a pulse through the cable
• At every discontinuity, an echo is
reflected back
• Used to test long cables
• Results are displayed on a CRT or LCD
9. Protocol Analyzers - I
• It may be a software or hardware device
• Captures packets from network
• Analyzes captured packets
• Analyzes the network traffic
• Identifies bottlenecks in network
• Operate on network layer
• Identifies active systems on network
• Removes the faulty system from network
10. Protocol Analyzers - II
Types of protocol analyzers
– Packet analyzer
• Capture packets present on the wire and store them for
analyzing later
• Does a statistical analysis of the data captured but it is
not its primary function
– Statistical analyzers
• Gather quantitative data to prepare a report on the
different statistical trends
• Does not store the packets for later analysis
11. Touchy Tools
• Used to identify network problems
• Problems are identified using asking various questions to
user
• Analyzes current situation and compares it with set of
baselines
• Adequate knowledge and experience is useful to
determine problems
12. Backups
• Used to preserves a copy of original files
• Should be performed on regular basis
• Useful when a data loss occurs
• Restores system to previous state
13. Baselines
• Used to compare the system’s current performance with
reference level set by the network administrator
• Determines possible network problems
• Performance monitor helps to set baselines
• Monitors both real time as well as historical data
• Baselines may change with time
14. Troubleshooting Model - I
• Steps of troubleshooting model
– Establish the symptoms
– Isolate the cause of the problem
– Establish what has changed that might have caused the
problem
– Ask Isolating questions
15. Troubleshooting Model - II
– Identify the most probable cause
– Implement a solution
– Test the solution
– Recognize the potential effects of the solution
– Document the solution
16. Four layer Model
• Four layers model
– Hardware – Considers all the hardware related issues
• Focuses on problems with network devices such as hubs,
switches
– Protocols – Deals with problems related to protocols
• Checks the installation and configuration of protocols
– Network – Considers the client and server concept
• Determines which node will act as client and which will
act as server
– Shared Resources – Determines which resources are to be
shared
17. Cable Testing and Certification - I
• Cable Distance
– Measures the distance of a cable and helps to locate the
point where a short or open is present
– Speed of pulse depends on wires, type of insulation and
external shielding
• Wire Map
– Used for twisted-pair
installations
– Detects split pairs
– Detects crossed pair condition
18. Cable Testing and Certification - II
• Attenuation
– Reduction in strength of signal
– Cable Testers are used to measures loss of power
• Near-End Crosstalk
– Transfer of electricity from one wire to another in the
same cable
– Causes
• Untwisted patch cables
• Crossed pairs
19. Cable Testing and Certification - III
• Network Monitoring and Protocol Decoding
– Cable checkers monitor network traffic
• Detects high or low level traffic
– Locates loose cables
• Noise-Level Test
– External signal that interfere with original signals
– Measured in millivolts (mV)
• Testing Fiber
– Fiber-optic cable testers use optical time-domain
reflectometer which depend on the reflection of light
20. SNMP
• Simple Network Management Protocol
• Networking standard protocol
• Used with TCP/IP networks
• Monitors and manages the network
• Helps to examine network performance
• Detect network faults or inappropriate access
21. Potential Network connectivity
problem
• Causes of network connectivity problems
– Incorrect network adapters (NIC)
– Incorrect switch settings
– Faulty hardware
– Driver issues
– Upgradation of operating system
– Server relocation
– The network adapter is incompatible with the motherboard
22. Network Workstation Troubleshooting
Process
• Steps to troubleshoot network workstation
– Determine what stopped working
– Determine if failure is on a single user’s workstation
– Try to log onto the network
– Check the NIC’s link light
23. Netstat Command
• Displays TCP/IP information
• Determines which ports are active
• Identifies ports that are vulnerable to attacks
• Provides connection details
• Provides data about TCP and UDP
24. Ipconfig Command
• Displays all network settings
• Identifies DHCP problems
• Used with windows 2000 and later versions
• Displays and resets DNS cache
• Sets and displays DHCP class IDs for an adapter
25. Winipcfg Command
• Provides IP addressing details
• Used for windows 98 or earlier versions
• Provides details such as IP address, Subnet Mask, Default
Gateway, DHCP Server, WINS Server, etc.
26. ARP Command
• Links IP address of a node with its hardware address
• Various ARP command options can be used to display or
change the values in ARP table
27. Nbtstat Command
• Resolves NetBIOS name resolution problems
• Used when WINS server is not accessible
• displays protocol information and current TCP/IP
connection using NetBIOS over TCP/IP (NBT)
28. Route Command
• Allows you to view and make changes in the IP routing
table
• Used to differentiate between routes to hosts and routes
to networks by reading the network address of the
destination