The document provides answers to questions from the CCNA 4 Chapter 6 exam, covering topics related to VPNs, broadband technologies like DSL and cable, and remote access solutions for teleworkers. Specific questions are answered regarding protocols used to establish VPN tunnels, functions of secure VPNs, encryption methods for VPN data confidentiality, and technologies like WiMAX that can provide remote access.
Seminar Paper on Security Issues of 802.11b based on IEEE Whitepaper by Boland, H. and Mousavi, H., Carleton University, Ottawa, Ont., Canada, IEEE Canadian Conference on Electrical and Computer Engineering, 2-5 May 2004
Seminar Paper on Security Issues of 802.11b based on IEEE Whitepaper by Boland, H. and Mousavi, H., Carleton University, Ottawa, Ont., Canada, IEEE Canadian Conference on Electrical and Computer Engineering, 2-5 May 2004
Overview of Proxy Mobile IP for IPv6 mobility.
Mobile IP (MIP) allows mobile nodes to roam between networks while
keeping existing connections open thus allowing seamless operation
on application level.
However, Mobile IP requires additions to the OS kernel that make deployments
difficult if not impossible alltogether.
Proxy Mobile IPv6 (PMIPv6) allows mobility scenarios for non-MIP aware mobile nodes.
A proxy assumes all functionality required for mobile nodes to roam from
one wireless network to another. PMIPv6 achieves this with a Mobile Access Gateway
(MAG, the proxy) and a Local Mobility Anchor (LMA) that represents the single point of attachment
for corresponding nodes.
PMIPv6 is most suited for campus-type networks where all wireless networks are under
the control of a single authority.
Extreme is the only company in the industry that takes an architectural approach to bringing products to market (from R&D to product release). Everything we do and create is a part of this Software Defined Architecture [SDA]. Wireless LAN, Wired LAN, Data Center -- It starts with highly reliable, high performance infrastructure. This is our heritage and we have always been outstanding at this: WiFi, Campus LAN all the way to the Data Center. (Ranging from your user to the applications they consume.)
ExtremeXOS -- On top of this, we use a single consistent and differentiated OS call EXOS. (next gen HW will run on EXOS). Lots of companies make high performance hardware, so to truly offer value added differentiation; we include an integrated layer of software into our architecture.
Network Management & BYOD -- We fully integrate management across our entire portfolio. We are very proud that in only 5 months, NetSight became the management platform for the entire portfolio. This was an emphatic message to the market that we take a different approach aligned to our SDA. NetSight has a single, integrated database for all aspects of management. This streamlines operations, enables dynamic management and removes the manual aspect of correlating information.
Application Analytics -- Purview offers application layer analytics, so you can understand what is happening on your network, you can optimize your environment, help increase productivity and measure adoption. Purview allows you to deliver both tactical and strategic information to make better more rapid business decisions.
Finally, we offer orchestration across the entire architecture. Whether that infrastructure is multi-vendor or not. Orchestration within the data center is available across virtualized workloads and consolidated storage and compute. Extreme is the only company in the industry committed to this type of integration, backward compatibility and openness to support technology partners and third party vendors. Many in the industry have grown through M&A, successfully so, however it has led to a portfolio with lots of products that are not integrated through management or orchestration. Each time you add a product, it increases your complexity with the introduction of a new disparate management tool.
A talk given by Joseph Lorenzo Hall at the UCB TRUST Privacy workshop on 10/05/2006 that describes the tensions between institutional requirements and technical abilities of the TOR network, which severly limits TOR research on the UCB campus.
An open, unencrypted wireless network can 'sniff' or capture and record the traffic, gain unauthorized access to internal network resources as well as to the internet, and then use the information and resources to perform disruptive or illegal acts.Many laptop computers have wireless cards pre-installed. The ability to enter a network while mobile has great benefits. However, wireless networking is prone to some security. Wireless networks relatively easy to break into, and even use wireless technology to hack into wired networks.The risks to users of wireless technology have increased as the service has become more popular.As a result, it is very important that enterprises define effective wireless security policies that guard against unauthorized access to important resources.
An experience is a personal and emotional event we remember. Every experience is established based upon pre-determined expectations we conceive and create in our minds. It’s personal, and therefore, remains a moving and evolving target in every scenario. When our experience concludes and the moment has passed, the outcome remains in our memory. Think about what makes you happy when connecting with your own device and then think about what makes you really upset when things are hard, complicated, and slow. If the user has a bad experience in anyone of these areas (simple, fast, and smart), they are likely to leave, share their negative experience, and potentially never return. Users might forget facts or details about their computing environment but they find it difficult to forgot the feeling behind a bad network experience. When something goes wrong with the network or an application, do you always get the blame?
So what can Ultra Low, consistent latency deliver? Low latency is a requirement for intensive, time critical applications. Latency is measure on a port-to-port basis, that once a frame is received on a ingress port how long does it take the frame to go through the internal switching infrastructure and leave an ingress port. The Summit X670 Top of Rack switch supports latency of around 800-900usec while the Black Diamond chassis, BDX8, can switch frames in a little as 3usec. We’re big believers in the value of disaggregation – of breaking down traditional data center technologies into their core components so we can build new systems that are more flexible, more scalable, and more efficient. This approach has guided Facebook from the beginning, as we’ve grown and expanded our infrastructure to connect more than 1.28 billion people around the world.
Flatter networks. Traditional data center networks have a minimum of three tiers: top of rack (ToR), aggregation and core. Often, there is more than one aggregation tier, meaning the data center could have three or more network tiers. When network traffic is primarily best effort, this is sufficient. But as more mission-critical, real-time traffic flows into the data center, it becomes critical that organizations move to two-tier networks.
An increase in east-west traffic flows. Legacy data center networks are designed for traffic to flow from the edge of the network into the core and then back to the edge in a north-south direction. Today, however, factors such as workforce mobility, Hadoop, big data and other applications are driving east-west traffic flows from server to server.
Virtualization of other IT assets. Historically, compute resources such as processor, memory and storage were resident in the server itself. Over time, more and more of these resources are being put into “pools” that can be accessed on demand. In this case, the data center network becomes a “fabric” that acts as the backplane for the virtualized data center.
Overview of Proxy Mobile IP for IPv6 mobility.
Mobile IP (MIP) allows mobile nodes to roam between networks while
keeping existing connections open thus allowing seamless operation
on application level.
However, Mobile IP requires additions to the OS kernel that make deployments
difficult if not impossible alltogether.
Proxy Mobile IPv6 (PMIPv6) allows mobility scenarios for non-MIP aware mobile nodes.
A proxy assumes all functionality required for mobile nodes to roam from
one wireless network to another. PMIPv6 achieves this with a Mobile Access Gateway
(MAG, the proxy) and a Local Mobility Anchor (LMA) that represents the single point of attachment
for corresponding nodes.
PMIPv6 is most suited for campus-type networks where all wireless networks are under
the control of a single authority.
Extreme is the only company in the industry that takes an architectural approach to bringing products to market (from R&D to product release). Everything we do and create is a part of this Software Defined Architecture [SDA]. Wireless LAN, Wired LAN, Data Center -- It starts with highly reliable, high performance infrastructure. This is our heritage and we have always been outstanding at this: WiFi, Campus LAN all the way to the Data Center. (Ranging from your user to the applications they consume.)
ExtremeXOS -- On top of this, we use a single consistent and differentiated OS call EXOS. (next gen HW will run on EXOS). Lots of companies make high performance hardware, so to truly offer value added differentiation; we include an integrated layer of software into our architecture.
Network Management & BYOD -- We fully integrate management across our entire portfolio. We are very proud that in only 5 months, NetSight became the management platform for the entire portfolio. This was an emphatic message to the market that we take a different approach aligned to our SDA. NetSight has a single, integrated database for all aspects of management. This streamlines operations, enables dynamic management and removes the manual aspect of correlating information.
Application Analytics -- Purview offers application layer analytics, so you can understand what is happening on your network, you can optimize your environment, help increase productivity and measure adoption. Purview allows you to deliver both tactical and strategic information to make better more rapid business decisions.
Finally, we offer orchestration across the entire architecture. Whether that infrastructure is multi-vendor or not. Orchestration within the data center is available across virtualized workloads and consolidated storage and compute. Extreme is the only company in the industry committed to this type of integration, backward compatibility and openness to support technology partners and third party vendors. Many in the industry have grown through M&A, successfully so, however it has led to a portfolio with lots of products that are not integrated through management or orchestration. Each time you add a product, it increases your complexity with the introduction of a new disparate management tool.
A talk given by Joseph Lorenzo Hall at the UCB TRUST Privacy workshop on 10/05/2006 that describes the tensions between institutional requirements and technical abilities of the TOR network, which severly limits TOR research on the UCB campus.
An open, unencrypted wireless network can 'sniff' or capture and record the traffic, gain unauthorized access to internal network resources as well as to the internet, and then use the information and resources to perform disruptive or illegal acts.Many laptop computers have wireless cards pre-installed. The ability to enter a network while mobile has great benefits. However, wireless networking is prone to some security. Wireless networks relatively easy to break into, and even use wireless technology to hack into wired networks.The risks to users of wireless technology have increased as the service has become more popular.As a result, it is very important that enterprises define effective wireless security policies that guard against unauthorized access to important resources.
An experience is a personal and emotional event we remember. Every experience is established based upon pre-determined expectations we conceive and create in our minds. It’s personal, and therefore, remains a moving and evolving target in every scenario. When our experience concludes and the moment has passed, the outcome remains in our memory. Think about what makes you happy when connecting with your own device and then think about what makes you really upset when things are hard, complicated, and slow. If the user has a bad experience in anyone of these areas (simple, fast, and smart), they are likely to leave, share their negative experience, and potentially never return. Users might forget facts or details about their computing environment but they find it difficult to forgot the feeling behind a bad network experience. When something goes wrong with the network or an application, do you always get the blame?
So what can Ultra Low, consistent latency deliver? Low latency is a requirement for intensive, time critical applications. Latency is measure on a port-to-port basis, that once a frame is received on a ingress port how long does it take the frame to go through the internal switching infrastructure and leave an ingress port. The Summit X670 Top of Rack switch supports latency of around 800-900usec while the Black Diamond chassis, BDX8, can switch frames in a little as 3usec. We’re big believers in the value of disaggregation – of breaking down traditional data center technologies into their core components so we can build new systems that are more flexible, more scalable, and more efficient. This approach has guided Facebook from the beginning, as we’ve grown and expanded our infrastructure to connect more than 1.28 billion people around the world.
Flatter networks. Traditional data center networks have a minimum of three tiers: top of rack (ToR), aggregation and core. Often, there is more than one aggregation tier, meaning the data center could have three or more network tiers. When network traffic is primarily best effort, this is sufficient. But as more mission-critical, real-time traffic flows into the data center, it becomes critical that organizations move to two-tier networks.
An increase in east-west traffic flows. Legacy data center networks are designed for traffic to flow from the edge of the network into the core and then back to the edge in a north-south direction. Today, however, factors such as workforce mobility, Hadoop, big data and other applications are driving east-west traffic flows from server to server.
Virtualization of other IT assets. Historically, compute resources such as processor, memory and storage were resident in the server itself. Over time, more and more of these resources are being put into “pools” that can be accessed on demand. In this case, the data center network becomes a “fabric” that acts as the backplane for the virtualized data center.
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
Accelerate your Kubernetes clusters with Varnish CachingThijs Feryn
A presentation about the usage and availability of Varnish on Kubernetes. This talk explores the capabilities of Varnish caching and shows how to use the Varnish Helm chart to deploy it to Kubernetes.
This presentation was delivered at K8SUG Singapore. See https://feryn.eu/presentations/accelerate-your-kubernetes-clusters-with-varnish-caching-k8sug-singapore-28-2024 for more details.
Encryption in Microsoft 365 - ExpertsLive Netherlands 2024Albert Hoitingh
In this session I delve into the encryption technology used in Microsoft 365 and Microsoft Purview. Including the concepts of Customer Key and Double Key Encryption.
The Art of the Pitch: WordPress Relationships and SalesLaura Byrne
Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes?
All these questions and more will be explored as we talk about matching clients’ needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.
Builder.ai Founder Sachin Dev Duggal's Strategic Approach to Create an Innova...Ramesh Iyer
In today's fast-changing business world, Companies that adapt and embrace new ideas often need help to keep up with the competition. However, fostering a culture of innovation takes much work. It takes vision, leadership and willingness to take risks in the right proportion. Sachin Dev Duggal, co-founder of Builder.ai, has perfected the art of this balance, creating a company culture where creativity and growth are nurtured at each stage.
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...UiPathCommunity
💥 Speed, accuracy, and scaling – discover the superpowers of GenAI in action with UiPath Document Understanding and Communications Mining™:
See how to accelerate model training and optimize model performance with active learning
Learn about the latest enhancements to out-of-the-box document processing – with little to no training required
Get an exclusive demo of the new family of UiPath LLMs – GenAI models specialized for processing different types of documents and messages
This is a hands-on session specifically designed for automation developers and AI enthusiasts seeking to enhance their knowledge in leveraging the latest intelligent document processing capabilities offered by UiPath.
Speakers:
👨🏫 Andras Palfi, Senior Product Manager, UiPath
👩🏫 Lenka Dulovicova, Product Program Manager, UiPath
Securing your Kubernetes cluster_ a step-by-step guide to success !KatiaHIMEUR1
Today, after several years of existence, an extremely active community and an ultra-dynamic ecosystem, Kubernetes has established itself as the de facto standard in container orchestration. Thanks to a wide range of managed services, it has never been so easy to set up a ready-to-use Kubernetes cluster.
However, this ease of use means that the subject of security in Kubernetes is often left for later, or even neglected. This exposes companies to significant risks.
In this talk, I'll show you step-by-step how to secure your Kubernetes cluster for greater peace of mind and reliability.
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered QualityInflectra
In this insightful webinar, Inflectra explores how artificial intelligence (AI) is transforming software development and testing. Discover how AI-powered tools are revolutionizing every stage of the software development lifecycle (SDLC), from design and prototyping to testing, deployment, and monitoring.
Learn about:
• The Future of Testing: How AI is shifting testing towards verification, analysis, and higher-level skills, while reducing repetitive tasks.
• Test Automation: How AI-powered test case generation, optimization, and self-healing tests are making testing more efficient and effective.
• Visual Testing: Explore the emerging capabilities of AI in visual testing and how it's set to revolutionize UI verification.
• Inflectra's AI Solutions: See demonstrations of Inflectra's cutting-edge AI tools like the ChatGPT plugin and Azure Open AI platform, designed to streamline your testing process.
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UiPath Test Automation using UiPath Test Suite series, part 3DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 3. In this session, we will cover desktop automation along with UI automation.
Topics covered:
UI automation Introduction,
UI automation Sample
Desktop automation flow
Pradeep Chinnala, Senior Consultant Automation Developer @WonderBotz and UiPath MVP
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
Essentials of Automations: Optimizing FME Workflows with ParametersSafe Software
Are you looking to streamline your workflows and boost your projects’ efficiency? Do you find yourself searching for ways to add flexibility and control over your FME workflows? If so, you’re in the right place.
Join us for an insightful dive into the world of FME parameters, a critical element in optimizing workflow efficiency. This webinar marks the beginning of our three-part “Essentials of Automation” series. This first webinar is designed to equip you with the knowledge and skills to utilize parameters effectively: enhancing the flexibility, maintainability, and user control of your FME projects.
Here’s what you’ll gain:
- Essentials of FME Parameters: Understand the pivotal role of parameters, including Reader/Writer, Transformer, User, and FME Flow categories. Discover how they are the key to unlocking automation and optimization within your workflows.
- Practical Applications in FME Form: Delve into key user parameter types including choice, connections, and file URLs. Allow users to control how a workflow runs, making your workflows more reusable. Learn to import values and deliver the best user experience for your workflows while enhancing accuracy.
- Optimization Strategies in FME Flow: Explore the creation and strategic deployment of parameters in FME Flow, including the use of deployment and geometry parameters, to maximize workflow efficiency.
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We’ll wrap up with a glimpse into future webinars, followed by a Q&A session to address your specific questions surrounding this topic.
Don’t miss this opportunity to elevate your FME expertise and drive your projects to new heights of efficiency.
Monitoring Java Application Security with JDK Tools and JFR Events
Ccna 4 chapter 6 v4.0 answers 2011
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CCNA 4 Chapter 6 V4.0 Answers
1. Which two protocols can be used to encapsulate traffic that is traversing a VPN
tunnel? (Choose two.)
ATM
CHAP
IPsec
IPX
MPLS
PPTP
2. What are the three main functions of a secure VPN? (Choose three.)
accounting
authentication
authorization
data availability
data confidentiality
data integrity
3. Data confidentiality through a VPN can be enhanced through the use of which
three encryption protocols? (Choose three.)
AES
DES
AH
hash
MPLS
RSA
4. While monitoring traffic on a cable network, a technician notes that data is being
transmitted at 38 MHz. Which statement describes the situation observed by the
technician?
Data is being transmitted from the subscriber to the headend.
Data is flowing downstream.
Cable television transmissions are interfering with voice and data transmissions.
The system is experiencing congestion in the lower frequency ranges.
5. Which two statements are valid solutions for a cable ISP to reduce congestion for
users? (Choose two.)
use higher RF frequencies
allocate an additional channel
subdivide the network to reduce users on each segment
reduce the length of the local loop to 5.5 kilometers or less
use filters and splitters at the customer site to separate voice from data traffic
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6. Data confidentiality through a VPN is achieved through which two methods?
(Choose two.)
digital certificates
encryption
encapsulation
hashing
passwords
7. What two protocols provide data authentication and integrity for IPsec? (Choose
two.)
AH
L2TP
ESP
GRE
PPTP
8. Which two methods could an administrator use to authenticate users on a remote
access VPN? (Choose two.)
digital certificates
ESP
hashing algorithms
smart cards
WPA
9. Which is an example of symmetric-key encryption?
Diffie-Hellman
digital certificate
pre-shared key
RSA signature
10.
ccna chapter 6
Refer to the exhibit. A teleworker is connected over the Internet to the HQ Office.
What type of secure connection can be established between the teleworker and the
HQ Office?
a GRE tunnel
a site-to-site VPN
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a remote-access VPN
the user must be at the office location to establish a secure connection
11. After conducting research to learn about common remote connection options for
teleworkers, a network administrator has decided to implement remote access over
broadband to establish VPN connections over the public Internet. What is the result
of this solution?
A reliable connection is established at greater speeds than what is offered from dialup
over POTS. Security is increased, but username and password information are sent in
plain text.
The connection has increased security and reliable connectivity. Users need a remote
VPN router or VPN client software.
Security and reliability are increased at a substantial loss in throughput, which is
considered acceptable when supporting a single user environment.
Reliability and security are increased without the need for additional equipment, when
compared to dialup connections using POTS.
12. Which two statements about DSL are true? (Choose two.)
users are on a shared medium
uses RF signal transmission
local loop can be up to 3.5 miles (5.5km)
physical and data link layers are defined by DOCSIS
user connections are aggregated at a DSLAM located at the CO
13. A company is using WiMAX to provide access for teleworkers. What home
equipment must the company provide at the teleworker’s site?
a WiMAX tower
a one-way multicast satellite
a WiMAX receiver
an access point connected to the company WLAN
14. A technician has been asked to configure a broadband connection for a
teleworker. The technician has been instructed that all uploads and downloads for
the connection must use existing phone lines. Which broadband technology should
be used?
cable
DSL
ISDN
POTS
15. Which two Layer 1 requirements are outlined in the Data-over-Cable Service
Interface Specification (DOCSIS)? (Choose two.)
channel widths
access method
maximum data rate
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modulation techniques
compression techniques
16.
ccna 4 chapter 6 answers
Refer to the exhibit. All users have a legitimate purpose and the necessary
permissions to access the Corporate network. Based on the topology shown, which
locations are able to establish VPN connectivity with the Corporate network?
Locations C, D, and E can support VPN connectivity. Locations A and B require an
additional PIX Firewall appliance installed on the edge of the network.
Locations C and E can support VPN connectivity. Locations A, B, and D require an
additional PIX Firewall appliance installed on the edge of the network.
Locations A, B, D, and E can support VPN connectivity. Location C requires an
additional router on the edge of the network.
All locations can support VPN connectivity.
17. Which two features can be associated with the Worldwide Interoperability for
Microwave Access (WiMAX) telecommunication technology? (Choose two.)
supports municipal wireless networks utilizing mesh technologies
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covers areas as large as 7,500 square kilometers
supports point-to-point links, but not full mobile cellular-type access
connects directly to the Internet through high-bandwidth connections
operates at lower speeds than Wi-Fi, but supports many more users
18.
ccna 4 chapter 6
Refer to the exhibit. A VPN tunnel has been established between the HQ Office and
the Branch Office over the public Internet. Which three mechanisms are required
by the devices on each end of the VPN tunnel to protect the data from being
intercepted and modified? (Choose three.)
The devices must use a dedicated Layer 2 connection.
The devices must have the VPN client software installed.
The two parties must inspect the traffic against the same ACLs.
The two parties must establish a secret key used by encryption and hash algorithms.
The two parties must agree on the encryption algorithm to be used over the VPN tunnel.
The devices must be authenticated before the communication path is considered secure.
19. Which statement describes cable?
Delivering services over a cable network requires downstream frequencies in the 50 to
860 MHz range, and upstream frequencies in the 5 to 42 MHz range.
The cable subscriber must purchase a cable modem termination system (CMTS)
Each cable subscriber has dedicated upstream and downstream bandwidth.
Cable subscribers may expect up to 27 Mbps of bandwidth on the upload path.
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