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What’s New @ Cisco Live…our 20th Year!

We have a lot going on at Cisco Live 2009 and I wanted to take moment to address a few of the things that are new at this year’s event.

For the first time, Cisco Live 2009 will be a hybrid event, offering both in-person and online experiences. The introduction of our 3D interactive platform, Cisco Live Virtual, gives us the opportunity to offer attendance options to customers who may not be able to attend in person. As with any immersive, interactive conference like Cisco Live, the onsite experience and the virtual experience are not the same and are not designed to be. Rather, we are able to offer a viable attendance alternative to a variety of audiences for those unable to take advantage of a traditional, in-person event experience.

It is not our intention to replace either the in-person or virtual experience, rather to create an integrated portfolio of event experiences that will collectively comprise Cisco Live.more

Securing the Network: It Takes a Village

In the past couple of weeks, I’ve been blogging about Smart Grid from a positive, green technology standpoint. But those of us in security know that it’s also rife with potential security risks. And recent events underscore that point. In April, The Wall Street Journal reported that spies from other countries had hacked into the grid, planting software that could have been used to disrupt service. While no such disruption occurred, the incident does point to the need for enhanced monitoring and control over such vital services.

The Obama administration is not taking the possibility of cyber threats lightly. In fact, it has undertaken several initiatives to make cybersecurity a top priority. To begin with, they’ve committed to developing a comprehensive policy for the United States. This positions the White House to assume a leadership role in protecting the nation’s information infrastructure, and fosters global cooperation on cybercrime to ensure a safer networking environment.

CCNA - Module 7 (100%)

1. Refer to the exhibit. IPv6 address 2006:1::1/64 eui-64 has been configured on the router FastEthernet0/0 interface. Which statement accurately describes the EUI-64 identifier configuration?
The configuration will derive the interface portion of the IPv6 address from the MAC address of the interface.
2. Refer to the exhibit. Which address or addresses represent the inside global address?
209.165.20.25
3. Your organization is issued the IPv6 prefix of 2001:0000:130F::/48 by your service provider. With this prefix, how many bits are available for your organization to create subnetworks?
164. What are two benefits of NAT? (Choose two.)
It saves public IP addresses.It adds a degree of privacy and security to a network.
5. What is true regarding the differences between NAT and PAT?
PAT uses unique source port numbers to distinguish between translations.6. A network administrator wants to connect two IPv6 islands. The easiest way is through a public network that uses only IPv4 equipment. What simple solution solves the problem?
Use tunneling to encapsulate the IPv6 traffic in the IPv4 protocol.
7. Refer to the exhibit. Which two addresses could be assigned to traffic leaving S0 as a result of the statement ip nat pool Tampa 179.9.8.96 179.9.8.111 netmask 255.255.255.240? (Choose two.)
179.9.8.98179.9.8.101
8. Refer to the exhibit. The FTP server has an RFC 1918 private address. Users on the Internet need to connect to the FTP server on the Fa0/0 LAN of R1. Which three configurations must be completed on R1? (Choose three.)
open port 20open port 21NAT with port forwarding
9. After activating IPv6 routing on a Cisco router and programming IPv6 addresses on multiple interfaces, what is the remaining step to activate RIPng?
Enter the interface programming mode for each IPv6 interface and enable IPng RIP.
10. Refer to the exhibit. How many IPv6 broadcast domains exist in this topology?
0
11. Refer to the exhibit. Traffic exiting R1 is failing translation. What part of the configuration is most likely incorrect?
access-list statement
12. Refer to the exhibit. According to the output, how many addresses have been successfully assigned by this DHCP server?
8
13. Refer to the exhibit. What is the purpose of the command marked with an arrow shown in the partial configuration output of a Cisco broadband router?
defines which addresses can be translated
14. A technician has been told by a supervisor to always clear any dynamic translations before attempting to troubleshoot a failed NAT connection. Why has the supervisor issued these instructions?
Because entries can be cached for long periods of time, the supervisor wants to prevent decisions being made based on old data.
15. Refer to the exhibit. Which two statements about the configuration are true? (Choose two.)
Traffic from the 10.1.1.0 network will be translated.Permitted traffic gets translated to a single inside global IP address.
16. Refer to the exhibit. R1 is performing NAT for the 10.1.1.0/24 network, and R2 is performing NAT for the 192.168.1.2/24 network. What would be valid destination IP address for HostA to put in its IP header when communicating with the web server?
172.30.20.2
17. What type of NAT should a network administrator use to ensure that a web server on the inside network is always available to the outside network?
static NAT
18. How many bits of an IPv6 address are used to identify the interface ID?
64
19. Refer to the exhibit. A technician used SDM to enter the NAT configuration for a Cisco router. Which statement correctly describes the result of the configuration?
A user on the outside network sees a request addressed from 192.168.1.3 using port 80.
20. Refer to the exhibit. A network technician determines DHCP clients are not working properly. The clients are receiving IP configuration information from a DHCP server configured on the router but cannot access the Internet. From the output in the graphic, what is the most likely problem?
The pool does not have a default router defined for the clients.
21. Refer to the exhibit. On the basis of the configuration shown, how should the pool of the excluded addresses be assigned to key hosts on the network, such as router interfaces, printers, and servers?
The addresses are statically assigned by the network administrator

CCNA - Module 8 (100%)

1. Excessive broadcasts are generally a symptom of a problem at which layer?
data link
2. Refer to the exhibit. Users at Branch B are reporting trouble accessing a corporate website running on a server that is located at HQ. HQ and Branch A users can access the website. R3 is able to ping 10.10.10.1 successfully but not 10.10.10.2. The users at Branch B can access servers at Branch A. Which two statements are true aboutthe troubleshooting efforts? (Choose two.)
Frame Relay at R3 and R2 should be tested to narrow the scope of the problem.An ACL entry error could cause the failure at Layer 4 in either R3 or R2.
3. What is one example of a physical layer problem?
incorrect clock rate4. Which two components should be taken into consideration when establishing a network baseline? (Choose two.)
information about the network designexpected performance under normal operating conditions
5. Refer to the exhibit. Which two steps should be taken during the process of creating network documentation? (Choose two.)
Record the information about the devices discovered in the entire network, including the remote locations.Transfer any information about the devices from the network configuration table that corresponds to a component of the topology diagram.6. A technician has been asked to troubleshoot an existing switched network but is unable to locate documentation for the VLAN configuration. Which troubleshooting tool allows the technician to map and discover VLAN and port assignments?
network analyzer
7. What combination of IP address and wildcard mask should be used to specify only the last 8 addresses in the subnet 192.168.3.32/28?
192.168.3.40 0.0.0.7
8. Information about which OSI layers of connected Cisco devices can be verified with the show cdp neighbors command?
Layer 1, Layer 2, and Layer 3
9. A technician has been asked to make several changes to the configuration and topology of a network and then determine the outcome of the changes. What tool can be used to determine the overall effect caused by the changes?
baselining tool
10. Which two pieces of information are typically found on a logical network diagram? (Choose two.)
interface identifiersDLCI for virtual circuits
11. Refer to the exhibit. Which three pieces of information can be determined by analyzing the output shown? (Choose three.)
A carrier detect signal is present.Keepalives are being received successfully.The LCP negotiation phase is complete.
12. Clients across the company are reporting poor performance across all corporate applications running in the data center. Internet access and applications running across the corporate WAN are performing normally. The network administrator observes a continual broadcast of random meaningless traffic (jabber) on the application server LAN in the data center on a protocol analyzer. How should the administrator start troubleshooting?
The jabber in the data center indicates a local physical layer problem. Use the protocol analyzer to determine the source of the jabber, and then check for a recent NIC driver update or bad cabling.
13. When gathering symptoms for troubleshooting a network problem, which step could result in getting an external administrator involved in the process?
determining ownership
14. A network administrator has received complaints that users on a local LAN can retrieve e-mail from a remote e-mail server but are unable to open web pages on the same server. Services at which two layers of the OSI model should be investigated during the troubleshooting process? (Choose two.)
transport layerapplication layer
15. Users are complaining of very long wait times to access resources on the network. The show interface command reveals collision counts far above the network baseline. At which OSI layer should the administrator begin troubleshooting?
physical
16. Which troubleshooting approach is suggested for dealing with a complex problem that is suspected of being caused by faulty network cabling?
bottom up
17. Which two statements are true concerning logical networking models? (Choose two.)
The top layer of the TCP/IP model combines the functions of the top three OSI layers.The TCP/IP network access layer corresponds to the OSI physical and data link layers.
18. Which three approaches should be used when attempting to gather data from users for troubleshooting? (Choose three.)
Obtain information by asking simple pertinent questions.Determine if the problem is related to time or a specific event.Determine if the user can re-create the problem or events leading to the problem.
19. Refer to the exhibit. Users on the Internal LAN are unable to connect to the www server. The network administrator pings the server and verifies that NAT is functioning correctly. Which OSI layer should the administrator begin to troubleshoot next?
application
20. Encapsulation errors from mismatched WAN protocols on a serial link between two routers indicate a problem at which OSI layer?
data link

Produkt-Highlights

Cisco PVC300 IP Camera: eine einfach zu verwendende IP-Videoüberwachungslösung aus der Cisco Small Business-Serie. Die Kamera schützt kleine Unternehmen, die Angestellten und das Firmeneigentum durch ein Live-Video, das von überall aus, sogar über ein Internet-fähiges Mobiltelefon, eingesehen werden kann. Zu den Funktionalitäten zählen:
Schwenk-, Neig- und Zoom-Möglichkeiten und eine Software, um bis zu 16 Kameras von einem Standort aus zu steuern.
Alarmfunktionen, wenn Bewegungen registriert werden und Integration in Alarm- und Sicherheitssysteme sowie Türsensoren.
Außergewöhnliche Bildqualität auch bei schlechten Lichtverhältnissen wie beispielsweise in Lagerräumen.
Einfachste Integration in Cisco NSS2000 und NSS3000 Network Storage Systeme für die Speicherung und Sicherung der Videos.

Networking 2009

Networking 2009 is the 8th event of the series of International Conferences on Networking. It is organised by RWTH Aachen University's Chair of Computer Science 4 and sponsored by the IFIP Technical Committee on Communication Systems (TC 6). Networking 2009 aims at bringing together members of the networking community from academia and industry, to discuss recent advances in the broad and fast-evolving field of telecommunications, and to highligh key issues, identify trends and develop visions.
The conference goals will be pursued through technical sessions as well as keynote talks on hot topics offered by invited experts. The technical sessions will be structured into two tracks in the following areas:
Applications and services
Wireless Networks
Next Generation Internet
The accepted papers will appear in the conference proceedings, published by Springer-Verlag, in the Lecture Notes in Computer Science (LNCS) series.

Cisco Router Configuration







Requirement Cisco Command
Set a console password to cisco Router(config)#line con 0
Router(config-line)#login
Router(config-line)#password cisco
Set a telnet password Router(config)#line vty 0 4
Router(config-line)#login
Router(config-line)#password cisco
Stop console timing out Router(config)#line con 0
Router(config-line)#exec-timeout 0 0
Set the enable password to cisco Router(config)#enable password cisco
Set the enable secret password to peter.

This password overrides the enable password
and is encypted within the config file

Router(config)#enable secret peter
Enable an interface Router(config-if)#no shutdown
To disable an interface Router(config-if)#shutdown
Set the clock rate for a router with a DCE cable to 64K Router(config-if)clock rate 64000
Set a logical bandwidth assignment of 64K to the serial interface Router(config-if)bandwidth 64
Note that the zeroes are not missing
To add an IP address to a interface Router(config-if)#ip addr 10.1.1.1 255.255.255.0
To enable RIP on all 172.16.x.y interfaces Router(config)#router rip
Router(config-router)#network 172.16.0.0
Disable RIP Router(config)#no router rip
To enable IRGP with a AS of 200, to all interfaces Router(config)#router igrp 200
Router(config-router)#network 172.16.0.0
Disable IGRP Router(config)#no router igrp 200
Static route the remote network is 172.16.1.0, with a mask of 255.255.255.0, the next hop is 172.16.2.1, at a cost of 5 hops Router(config)#ip route 172.16.1.0 255.255.255.0 172.16.2.1 5
Disable CDP for the whole router Router(config)#no cdp run
Enable CDP for he whole router Router(config)#cdp run
Disable CDP on an interface Router(config-if)#no cdp enable

Cisco Router Configuration Commands

More Cisco information: - Cisco Router Commands
- Cisco IP Addressing Commands
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Cisco IP Services Commands
- Cisco Router and Switch Commands
- Cisco Router Configuration Commands

- LAB 1 Basic Cisco configuration commands
Other information: - IP6 Next Generation Overview
- Linux Commands
- Tom's MCSE Notes
- Tom's A+ Plus Notes

- Tom's Networking+ (Net+) Plus Notes

Cisco Commits to Help Address High School Dropout Crisis

Cisco Commits to Help Address High School Dropout Crisis
Cisco Commits to Help Address High School Dropout Crisis

Cisco Commits to Help Address High School Dropout Crisis

Cisco makes $4.5 million commitment to City Year to address the growing high school dropout crisis and support the national expansion of City Year's innovative Whole School Whole Child Initiative.

Cisco TelePresence Helps GE Streamline Business
Cisco TelePresence Helps GE Streamline Business

Cisco TelePresence Helps GE Streamline Business

GE discusses how Cisco TelePresence has transformed the way they do business by inventing new approaches to enhancing productivity leading to faster product development and cutting operating costs.

Cisco Practicing the Difficult Art of Hands-On Philanthropy
Cisco Practicing the Difficult Art of Hands-On Philanthropy

Cisco Practicing the Difficult Art of Hands-On Philanthropy

Company's new era in social investing focuses on partnering closely with non-profits to share resources, people and knowledge. Part One of a two-part series.

The Road to Broadband and Economic Growth in Lebanon
The Road to Broadband and Economic Growth in Lebanon

The Road to Broadband and Economic Growth in Lebanon

Many Lebanese are looking to their new parliament and government to continue the strong momentum built by the private sector to support the development of a broadband infrastructure.

John Chambers Honored by Silicon Valley Education Foundation
John Chambers Honored by Silicon Valley Education Foundation

John Chambers Honored by Silicon Valley Education Foundation

The Silicon Valley Education Foundation hosts its 5th annual Pioneers & Purpose dinner where Cisco Chairman and CEO John Chambers will be honored with the Pioneer Business Leader Award for 2009.

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Cisco Training videos CCNA

Cisco CCNA 640-801 Tutorials



Introduction & Overview

Overview Pt.1 (07:06)

Overview Pt.2 (07:24)
The OSI Model

Development & Reason for Model (04:19)

Overview of Layered Architecture (07:26)

The Application Layer (06:39)

The Presentation Layer (04:42)

The Session Layer (04:28)

The Transport Layer (06:32)

The Network Layer (03:24)

The Data Link Layer (04:24)

The Physical Layer (04:31)
Collision Domains vs Broadcast Domains

Ethernet & CSMA/CD (05:04)

Collision Domains (03:42)

Broadcast Domains (04:12)

Practice Exams Certified Internet Webmaster

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