Dec/100
Cisco Catalyst WS-C2950-24 – 2950 / 24 port Switch
Some recent 2950 cisco auctions on eBay:
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CISCO REF WS-C2950G-12-EI Catalyst 2950, 12 10/100 with 2 GBIC slots, Enhanced
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Dec/100
Cisco WS-C2950T-24 24-Port FE Switch Enhanced Image on Sale
2950 Cisco on eBay:
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How to configure NAT.
Dec/100
Cisco Catalyst 2950 48 Port Switch WS-C2950G-48-EI
2950 Cisco on eBay:
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Dec/100
642-642 question and answer
642-642 Exam
Quality of Service (QoS)
Exam Number/Code : 642-642
Exam Name : Quality of Service (QoS)
Questions and Answers : 181 Q&As
Update Time: 2010-05-31
642-642 Price: $ 79.00
642-642 Exam Demo
5. After learning QoS, for the following options, Which of the following characterize problems that could occur with voice traffic when QoS is not applied in a network?(choose two)
A. Voice sounds choppy.
B. Calls are disconnected.
C. VoIP broadcasts increase as Queuing delay increases, causing delay and caller interaction problems.
D. Voice call requires more bandwidth as lost packets are retransmitted.
Answer: AB
6. As a candidate for CCVP exam, can you tell me what does a router base its opinion of how much bandwidth is available to a queuing tool on a serial interface?
A. The bandwidth command is required before a queuing tool knows how much bandwidth is available.
B. The automatically-sensed physical transmission rate on the serial interface.
C. The clock rate command is required before a queuing tool knows how much bandwidth is available.
D. Defaults to T1 speed, unless the bandwidth command has been configured.
Answer: D
642-642 Exam Objectives
Classification and Marking
Explain how link layer and network layer markings are used to define service classes and the different applications represented by each of these service classes
Given a network and a description of QoS issues, use MQC CLI commands to classify packets
Given a network and a description of QoS issues, use class-based marking to assign packets to a specific service class
Describe the function of Network Based Application Recognition
Describe the purpose of pre-classification to support QoS in various VPN (IPSEC, GRE, L2TP) configurations
Describe QoS trust boundaries and their significance in LAN based classification and marking
Identify the different classification and marking options available on Cisco L2 and L3 switching platforms
Congestion Management Methods
List and explain the different queuing algorithms
Explain the components of hardware and software queuing systems on Cisco routers and how they are effected by tuning and congestion
Describe the benefits and drawbacks of using WFQ to implement QoS
Explain the purpose and features of Class-Based WFQ (CBWFQ)
Explain the purpose and features of Low Latency Queuing (LLQ)
Identify the Cisco IOS commands required to configure and monitor LLQ on a Cisco router
Describe and explain the different queuing capabilities available on the Cisco Catalyst 2950 Switch
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Dec/100
640-822 preparation
640-822 Exam
Interconnecting Cisco Networking Devices Part 1
* Exam Number/Code : 640-822
* Exam Name : Interconnecting Cisco Networking Devices Part 1
* Questions and Answers : 212 Q&As
* Update Time: 2010-05-31
* Price: $ 60.00
1. Refer to the exhibit. A network administrator has configured a Catalyst 2950 switch for remote management by pasting into the console the configuration commands that are shown in the exhibit. However, a Telnet session cannot be successfully established from a remote host. What should be done to fix this problem?
A. Change the first line to interface fastethernet 0/1.
B. Change the first line to interface vlan 0/1.
C. Change the fifth line to ip default-gateway 192.168.17.241.
D. Change the fifth line to ip route 0.0.0.0 0.0.0.0 192.168.17.1.
E. Change the sixth line to line con 0.
Answer: C
2. Refer to the exhibit. A network technician is attempting to use HyperTerminal to configure a new router using the settings shown. What is the reason the technician is unable to connect to the router?
A. The bits per second should be set to 9600.
B. The data bits should be set to 6.
C. Parity should be set to mark.
D. The stop bits should be set to 2.
E. Flow control should be set to hardware.
Answer: A
3. Refer to the exhibit. What could be possible causes for the “Serial0/0 is down” interface status? (Choose two.)
A. A Layer 1 problem exists.
B. The bandwidth is set too low.
C. A protocol mismatch exists.
D. An incorrect cable is being used.
E. There is an incorrect IP address on the Serial 0/0 interface.
Answer: AD
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CISCO REF WS-C2950G-12-EI Catalyst 2950, 12 10/100 with 2 GBIC slots, Enhanced
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Dec/100
Cool 2950 Cisco Sales
Some recent 2950 cisco auctions on eBay:
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Enjoy this trunking challenge lab. www.howtonetwork.net
Video Rating: 4 / 5
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Nov/100
640-822 Training Tools
640-822 Exam
Interconnecting Cisco Networking Devices Part 1
Exam Number/Code : 640-822
Exam Name : Interconnecting Cisco Networking Devices Part 1
Questions and Answers : 222 Q&As
Update Time: 2010-03-20
Price: $ 75.00
We are all well aware that a major problem in the IT industry is that there is a lack of quality study materials. Our Exam Preparation Material provides you everything you will need to take a certification examination. Like actual certification exams, our Practice Tests are in multiple-choice (MCQs) Our Cisco 640-822 Exam will provide you with exam questions with verified answers that reflect the actual exam.
Exam : Cisco 640-822
Title : Interconnecting Cisco Networking Devices Part 1
1. Refer to the exhibit. A network administrator has configured a Catalyst 2950 switch for remote management by pasting into the console the configuration commands that are shown in the exhibit. However, a Telnet session cannot be successfully established from a remote host. What should be done to fix this problem?
A. Change the first line to interface fastethernet 0/1.
B. Change the first line to interface vlan 0/1.
C. Change the fifth line to ip default-gateway 192.168.17.241.
D. Change the fifth line to ip route 0.0.0.0 0.0.0.0 192.168.17.1.
E. Change the sixth line to line con 0.
Answer: C
2. Refer to the exhibit. A network technician is attempting to use HyperTerminal to configure a new router using the settings shown. What is the reason the technician is unable to connect to the router?
A. The bits per second should be set to 9600.
B. The data bits should be set to 6.
C. Parity should be set to mark.
D. The stop bits should be set to 2.
E. Flow control should be set to hardware.
Answer: A
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Nov/100
Lastest 2950 Cisco auctions
2950 cisco eBay auctions you should keep an eye on:
CISCO WS-C2950G-24-EI NSPP WSC2950G24EI | US $110.97 End Date: Sunday May-20-2012 20:06:21 PDT Buy It Now for only: US $110.97 Buy it now | Add to watch list |
CISCO REF WS-C2950G-12-EI Catalyst 2950, 12 10/100 with 2 GBIC slots, Enhanced
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Nov/100
A Closer Look at Trunking
Your CCNA studies are going to include quite a bit of information about switches, and for good reason. if you don’t understand basic switching theory, you can’t configure and troubleshoot Cisco switches, either on the CCNA exam or in the real world. That goes double for trunking!
Trunking is simply enabling two or more switches to communicate and send frames to each other for transmission to remote hosts. There are two major trunking protocols that we need to know the details of for exam success and real-world success, but before we get to the protocols, let’s discuss the cables we need.
Connecting two Cisco switches requires a crossover cable. As you know, there are eight wires inside an ethernet cable. In a crossover cable, four of the cables “cross over” from one pin to another. For many newer Cisco switches, all you need to do to create a trunk is connect the switches with a crossover cable. For instance, 2950 switches dynamically trunk once you connect them with the right cable. If you use the wrong cable, you’ll be there a while!
There are two different trunking protocols in use on today’s Cisco switches, ISL and IEEE 802.1Q, generally referred to as “dot1q”. There are three main differences between the two. First, ISL is a Cisco-proprietary trunking protocol, where dot1q is the industry standard. (Those of you new to Cisco testing should get used to the phrases “Cisco-proprietary” and “industry standard”.) If you’re working in a multivendor environment, ISL may not be a good choice. And even though ISL is Cisco’s own trunking protocol, some Cisco switches run only dot1q.
ISL also encapsulates the entire frame, increasing the network overhead. Dot1q only places a header on the frame, and in some circumstances, doesn’t even do that. There is much less overhead with dot1q as compared to ISL. That leads to the third major difference, the way the protocols work with the native vlan.
The native vlan is simply the default vlan that switch ports are placed into if they are not expressly placed into another vlan. On Cisco switches, the native vlan is vlan 1. (This can be changed.) If dot1q is running, frames that are going to be sent across the trunk line don’t even have a header placed on them; the remote switch will assume that any frame that has no header is destined for the native vlan.
The problem with ISL is that is doesn’t understand what a native vlan is. Every single frame will be encapsulated, regardless of the vlan it’s destined for.
Switching theory is a big part of your CCNA studies, and it can seem overwhelming at first. Just break your studies down into smaller, more manageable parts, and soon you’ll see the magic letters “CCNA” behind your name!
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Nov/100
Cisco 2950C Switch WS-C2950C-24 26 Ports For CCNA CCNP
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CISCO REF WS-C2950G-12-EI Catalyst 2950, 12 10/100 with 2 GBIC slots, Enhanced
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