IPv6 Tutorial
Internet has been growing extremely fast so the IPv4 addresses are quickly approaching complete depletion. Although many organizations already use Network Address Translators (NATs) to map multiple...
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CCNA EIGRP LAB Question
Question After adding R3 router, no routing updates are being exchanged between R3 and the new location. All other inter connectivity and Internet access for the existing locations of the company are...
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CCNA Implementation SIM
This topology contains 3 routers and 1 switch. Complete the topology. Drag the appropriate device icons to the labeled Device Drag the appropriate connections to the locations labeled Connections. Drag...
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Practice Real CCNA Labs with Packet Tracer Simulator
Well, the title said it all. Here are some screenshots about the labs in Packet Tracer Simulator: CCNA Drag And Drop SIM: CCNA EIGRP SIM: Configuration SIM: Please say thanks to Runiya, who created...
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CCNA NAT SIM Question 2
Question You work as a network technician at 9tut.com. Study the exhibit carefully. You are required to perform configurations to enable Internet access. The Router ISP has given you six public IP...
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CCNA Access List Sim
Question An administrator is trying to ping and telnet from Switch to Router with the results shown below: Switch> Switch> ping 10.4.4.3 Type escape sequence to abort. Sending 5, 100-byte ICMP...
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VLAN Trunking Protocol VTP Tutorial
This topic describes the features that VLAN Trunking Protocol (VTP) offers to support VLANs. To help you understand the basic concept, this is a summary of what VTP is: “VTP allows a network manager to...
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Virtual Local Area Network VLAN Tutorial
VLAN Introduction “A virtual LAN (VLAN) is a group of networking devices in the same broadcast domain” It is the concept of VLAN that most of the books are using but it doesn’t help us understand the...
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Frame Relay – GNS3 Lab
In this article we will create a Frame Relay in GNS3 to learn how to configure Frame-Relay. Note: If you need to revise your Frame Relay knowledge, we recommend you to read our Frame Relay tutorial...
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Wireless Tutorial
In this article we will discuss about Wireless technologies mentioned in CCNA. Wireless LAN (WLAN) is very popular nowadays. Maybe you have ever used some wireless applications on your laptop or...
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Frame Relay Tutorial
Let’s start this article with the question: Why do we need Frame Relay? Let’s take a simple example. Suppose you are working in a big company and your company has just expanded to two new locations....
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Subnetting Tutorial – Subnetting Made Easy
In this article, we will learn how to subnet and make subnetting an easy task. The table below summarizes the possible network numbers, the total number of each type, and the number of hosts in each...
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CCNA – Protocols & Services
Here you will find answers to CCNA – Protocols & Services Questions Question 1 An administrator attempts a traceroute but receives a “Destination Unreachable” message. Which protocol is responsible...
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CCNA – Show Command Questions
Here you will find answers to Basic Command Questions Question 1 Refer to the exhibit. What can be determined from the output? A. 192.168.1.2 is local to the router. B. 192.168.3.1 is local to the...
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CCNA – TCP/IP Model & Operation
Here you will find answers to TCP/IP Model & Operation Questions Question 1 An inbound access list has been configured on a serial interface to deny packet entry for TCP and UDP ports 21, 23 and...
View ArticleCCNA – OSI Model Questions
Here you will find answers to OSI Questions Note: If you are not sure about OSI Model, please read my OSI tutorial. Question 1 Which of the following correctly describe steps in the OSI data...
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OSI Model Tutorial
Welcome to the most basic tutorial for networker! Understanding about OSI model is one of the most important tools to help you grasp how networking devices like router, switch, PC… work. Let’s take an...
View ArticleCCNA – Cisco IOS Questions 3
Here you will find answers to Cisco IOS Questions – Part 3 Note: If you are not sure about the boot sequence of a router/switch, please read my Cisco Router Boot Sequence Tutorial. Question 1 Refer to...
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CCNA – Cisco IOS Questions 2
Here you will find answers to Cisco IOS – Part 2 Note: If you are not sure about the boot sequence of a router/switch, please read my Cisco Router Boot Sequence Tutorial. Question 1 When you are logged...
View ArticleCCNA – Cisco IOS Questions
Here you will find answers to Cisco IOS Questions Note: If you are not sure about the boot sequence of a router/switch, please read my Cisco Router Boot Sequence Tutorial. Question 1 How does using the...
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