Certexams.com CCNA Network Simulator with Designer Features

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Certexams.com CCNA NetSim with Designer is a comprehensive software suite designed for students, network engineers, and IT professionals who want to hone their networking skills and prepare for CCNA certification. This software suite includes two key components: NetSim and Designer.

NetSim is a network simulator that allows users to create a virtual network environment and practice networking skills without the need for physical hardware. It comes with a vast array of pre-built labs and scenarios, which cover topics such as subnetting, routing, switching, VLANs, and more. The labs are designed to simulate real-world networking scenarios, which helps users to develop hands-on skills and familiarity with the command line interface.

The Designer component of the software suite allows users to create their own network scenarios and customize the existing labs to suit their needs. The user-friendly drag-and-drop interface makes it easy to create networks of various sizes and complexities. Users can choose from a wide range of networking devices such as routers, switches, hubs, and firewalls to build their network topology.

One of the notable features of Certexams.com CCNA NetSim with Designer is its compatibility with Cisco CCNA exam objectives. The labs and scenarios are designed to align with the CCNA exam syllabus, making it an excellent tool for CCNA exam preparation. Users can use the software to practice and improve their skills in areas such as IP addressing, subnetting, network security, and routing protocols.

The software also provides detailed reports that allow users to track their progress and identify areas where they need to improve. The reports include information such as the time taken to complete a lab, the number of correct and incorrect responses, and a breakdown of the questions by category.

In summary, Certexams.com CCNA NetSim with Designer is an excellent tool for students, network engineers, and IT professionals who want to develop their networking skills and prepare for CCNA certification. With its wide range of pre-built labs, customizable scenarios, and compatibility with CCNA exam objectives, the software is an essential tool for anyone who wants to succeed in the world of networking.

Certexams.com Updates Juniper JNCIA JN0-104 Practice Tests

The JNCIA-Junos (JN0-104) exam is designed to test the candidate’s knowledge and understanding of the Juniper Networks Junos operating system and device administration. The exam covers topics such as networking fundamentals, Junos device operations, and basic routing and switching concepts. Some specific topics that may be covered on the JN0-104 exam include:

  • Understanding the Junos operating system and architecture
  • Managing and monitoring Junos devices
  • Configuring basic routing and switching features
  • Understanding routing policies and firewall filters
  • Monitoring and troubleshooting network issues

It’s always good to check with Juniper Networks for the latest exam information, as the topics and format of the exam may be updated periodically.

How does JNCIA compare with CCNA?

CCNA (Cisco Certified Network Associate) and JNCIA (Juniper Networks Certified Internet Associate) are both entry-level certifications in networking, but they have some differences:
  1. Vendor focus: CCNA is specific to Cisco systems and technologies, while JNCIA is specific to Juniper systems and technologies.
  2. Exam content: CCNA covers a range of topics, including network fundamentals, network access, IP connectivity, IP services, security fundamentals, and automation and programmability. JNCIA covers a similar range of topics, including an introduction to Juniper Networks, the Junos operating system, routing and switching, and basic security.
  3. Exam format: CCNA exams are typically multiple choice and simulations. JNCIA exams consist of multiple choice questions.
  4. Recertification: CCNA certification is valid for three years, and recertification requires passing a current CCNA exam or a higher-level exam. JNCIA certification is valid for three years, and recertification requires passing the current JNCIA exam.
  5. Career opportunities: CCNA is a well-respected and widely recognized certification, and is a requirement for many entry-level network engineering positions. JNCIA is also a well-respected certification, but is primarily focused on Juniper systems and technologies. Large organizations and data centers employ such equipment, and Juniper devices are found less frequently at retair stores.

In short, both CCNA and JNCIA are valuable certifications for entry-level network engineers, but the choice between the two will depend on your career goals and the systems and technologies you want to specialize in. If you are interested in pursuing a career in networking with Cisco systems, then CCNA is the way to go. If you are interested in pursuing a career in networking with Juniper systems, then JNCIA is the way to go.

CertExams.com Updates CCNA NetSim for VPN and FHRP

CertExams.com released a thorough update to their flagship software, Network Simulator with Designer for CCNA® , to include functionality for the following:

  • Site to Site VPN configuration between routers
  • FHRP configuration

VPN (Virtual Private Network) is widely used these days for security and confidentiality of communication between hosts. The two main types of VPN are Site-to-site VPN and Remote-to-Site VPN. In Site-to-site VPN, a secure tunnel is formed between two peers within the communication channel. An example configuration scenario is shown in the figure below:

Photo Courtesy: Brocade.com, a leading networking equipment manufacturer.

As may seen in the exhibit, the VPN is configured between two routers. A site-to-site VPN is also called router-to-router VPN. The hosts on LAN are unaware of the VPN between routers V1 and V2. However, all the communication between routers V1 and V2 moves securely over OpenVPN tunnel. You typically need a NAT (Network Address Translation) to translate internal IP address 192.168.200.1 to external IP address 12.34.56.78 and vice versa (for incoming traffic). The same thing is done at router V2 also. The word “tunnel” may be a bit misleading some times. Note that there is no route and bandwidth allocated between the routers when a tunnel is formed. A VPN typically secures the communication channel but not the route or bandwidth. A VPN connections use 1) Encapsulation 2) Authentication, and 3) Data encryption.

In Encapsulation, user data (i.e. TCP/IP packets) is wrapped around by using encapsulation protocol such as GRE, IPsec, L2F, PPTP,  or L2TP. The encapsulated data packets are again wrapped inside carrier protocol packet, and then routed across the public network.

For site-to-site VPNs, the encapsulating protocol is usually IPsec or GRE (Generic Routing Encapsulation).  For remote-access VPNs, tunneling normally takes place using PPP (Point-to-Point Protocol). PPP tunneling will use one of PPTP, L2TP or L2F.

When using site-to-site VPN, any user can access remote site from any of the computers inside the firewall (local network). For this purpose, one needs to configure AAA (Authentication, Authorization, and Accounting), so that one needs to authenticate to access any resources at the other end of the VPN tunnel to restrict user access.

Remote access VPN is typically used with home and mobile users to connect to the corporate office. For example, a mobile traveler can connect to the Corporate head quarters using his laptop computer securely using a public Wi-Fi connection. Please see the figure below:

Photo courtesy: brocade.com, a leading networking equipment manufacturer.

As seen in the figure, a remote user communicates with the sever securely over VPN tunnel. All the user information, login credentials, etc. are encrypted when using VPN tunnel. In remote access VPN, usually, a client is installed on the remote user’s computer. Alternatively, the remote user uses SSL enabled browser session to communicate with the corporate network (shown as Private Network in the figure)

FHRP (First Hop Redundancy Protocol): Usually, when a subscriber connects to an ISP using Wi-Fi router, he will have single point of failure. i.e. if the router fails, the connection to the Internet fails. FHRP allows redundancy or a fail over mechanism, thus ensuring that there is no single point of failure for a subscriber to the Internet. There are several  protocol defined for FHRP, popular among these are: HSRP, VRRP, and GLBP.

HSRP, short for Hot Standby Router Protocol, is a Cisco proprietary protocol, and supported by most of the Cisco routers.

A simple HSRP configuration is shown in the figure. In HSRP, one router acts as an Active router and the other as Standby router. There can be more than two routers in HSRP configuration, however, only one router is put in Standby state using a selection criteria. HSRP routers may be assigned “Priority” so that a network admin can choose which router has be in HSRP Active state and which has to be in Standby state.

VRRP, short for Virtual Router Redundancy Protocol, is a standards based protocol. It is quite similar to HSRP in configuration and functionality.

GLBP, short for Gateway Load Balancing Protocol, is slightly advanced, in the sense, that it supports load balancing by default. Otherwise, it is similar to other two redundancy protocols.

CertExams.com CCNA Netsim, offers a virtual networking environment, where in, one can create a network with Cisco(R) routers, switches, and other networking elements and experiment. The software has a GUI based designer that allows drag-n-drop functionality for designing one’s own network. Several labs on HSRP, and site-to-site VPN have been added for hands-on practice. The software is intended for learning purpose with limited set of commands support.

List of available CCNA labs may be viewed by going to the product page. You may download the free demo version of the software by going to the product download page.

Disclaimer: CertExams.com is not associated nor affiliated with Cisco Systems, or Brocade. Cisco®, CCNA® are registered trademarks of Cisco Systems, and Brocade® is trademark of Brocade/Broadcom Limited and duly recognized.

Certexams.com Netsim for CCNA Update

Certexams.com updated netsim for ccna with the following:
1. Book marking of labs
2. Color coding labs so that a candidate would be able to identify labs that had been completed, under progress, and to be completed.
3. Progress indicator for a lab, which enables a user to view how much of the lab exercise has been completed and what is remaining.

Download the limited version of the netsim here:
CCNA Labsim

The labsim consists of dozens of exercises that provide handson experience in designing and configuring networks using Cisco routers and switches. Commands like ping, trace route and ipconfig are also supported.

Anand software and training releases update on CCNA NETSIM.

 

http://routersimulator.certexams.com/network-simulator-designer.html

Anand software and training is releasing CCNA network simulator with designer with enhanced usability very shortly. The new features include the following :

  1. Ability to bookmark the labs so that a user would be able to return to the lab at a later time easily.
  2. Ability to mark the labs as 1) in progress,  2) yet to be completed,  and 3)Completed. A user would be able to readily identity the lab status by looking at the colour coding.
  3. In addition, a progress score has been implemented that indicates the extent of lab that has been completed.
  4. It is possible to save the configuration and return at a later time to complete the rest of the lab.

CCheck out the software here :

 

CCNA NetSim Updated to Provide Cisco CCP (GUI) Simulator

CertExams.com CCNA Netsim has been updated to simulate Cisco Configuration Professional (CCP) Graphical User Interface (GUI). The advantage of using CCP is that a user may configure a router or a switch by using graphical interface. A screenshot of the same is given below:

Cisco CCP Sim

A GUI quickens the learning curve required by a network administrator by providing easy to configure graphical options (such as drop-down menu, etc), and one need not remember the conventional CLI commands. The GUI closely mimics the Cisco Configuration Professional (CCP) providing a simulated environment. It also enables a user to get hands-on experience in using Cisco’s most recent CCP graphical interface.
You may download the product here:

http://routersimulator.certexams.com/ccna-simulator-download/download-network-simulator-designer.html

Download CCNA NetSim. Try the software free.

Upcoming: We are now working on code signing our software products to ensure that the software is delivered to the user without being tampered, thus providing 100% virus free, and fully trusted software products.

CCNA NetSim Graphical User Interface

certexams-logo-small CCNA Network Simulator has been updated to include Graphical User Interface (GUI). Conventionally, a network administrator needs to configure a router or a switch using CLI (Command Line Interface), with the exception of some Wi-Fi routers that allowed GUI configuration. Cisco, as part of its product enhancements, has been working on improving the user interface, and have come up with Cisco Configuration Professional, a GUI tool that allows network administrators to configure and troubleshoot Cisco network devices using a visual GUI interface. Certexams has introduced a limited version of the GUI based Network Configurator that allows users to do mundane tasks such as assigning IP addressses and subnet masks,  setting up DHCP, assigning host name, etc. The GUI is intended to provide some hands-on experience of working with CCP (Cisco Configuration Professional) and simulates the CCP navigation.

CCNA NetSim GUI
CCNA NetSim GUI

A typical screenshot of the feature may be seen the figure. As seen in the figure, the GUI consists of a left pane that outlines the configuration tasks, and when selected, the right pane provides the work area, where the user may select or type-in appropriate configuration. Several labs have been given to familiarize the user to configuring the network using GUI. However, this being the first release, more enhancements may be expected to Network Configurator. More configuration tasks, as well as new labs will be added in due course of time.

Available labs may be viewed here:

http://routersimulator.certexams.com/router-labs/index.html

The free demo software may be downloaded, and installed using the link given below:

http://routersimulator.certexams.com/ccna-simulator-download/download-network-simulator-designer.html

Other important features of the netsim software are:

  • The software is completely stand alone, and there is no need for any other software.
  • Hundreds of lab exercises to get familiarized with concepts of routing, NAT, Access lists, subnet masking, etc.
  • Configure and troubleshoot VLANs, VTP, and other switch related tasks
  • There is no hardware required, it s completely software based too.

Please visit the product home page http://routersimulator.certexams.com/ccna-simulator-download/download-network-simulator-designer.html for more information, and free demo download.

CertExams.com CCNA NetSim Update

 

MPLS has become very popular during recent years to accommodate gigabit switching speeds over wide area networks. Traditional IP routing uses enormous processing overhead and slows down packet switching speeds. MPLS allows packets to be forwarded by looking at the label (Just like switch looks at Layer 2) rather than having to be passed up to Layer 3 (the IP header). Each packet gets labeled on entry into the service provider’s MPLS network by the ingress router. All the subsequent routing between nodes is based only on the MPLS label that was attached by the previous MPLS enabled router. The router doesn’t have to look at IP header, thus saving enormous processing load. Alter the packet traverses though the MPLS network, the egress router removes the label(s) and forwards the original IP packet toward its final destination.

Network Simulator with Designer for CCNA has been updated to include MPLS commands and several MPLS labs. For complete list of labs included, please visit the page here:

http://routersimulator.certexams.com/router-labs/index.html

For list of MPLS commands available, please visit here:

https://routersimulator.certexams.com/commands.html

The software consists of hundreds of labs for hands-on practice. The simulator is intended for beginners who desires to have hands-on experience in designing and implementing router/switch network in a simulated environment.

You may download the software here:

http://routersimulator.certexams.com/ccna-simulator-download/download-network-simulator-designer.html

CertExams.com CCNA NetSim Update

certexams-logo-small       CertExams.com has recently updated its Network Simulator with Designer for CCNA (CCNA NetDSim). The product is useful for students and IT professionals preparing for CCENT/ICND2/CCNA certification.

The updated version includes

1. .NET  conversion – The existing VB6 version has been updated to .NET platform, resulting in lessor footprint (smaller file size), and better compatibility with Win 7 and Win 8 OSes.
2. Bug fixes, a few known bugs have been fixed.

Product download and information page:

http://routersimulator.certexams.com/ccna-simulator-download/download-network-simulator-designer.html

You may also be interested in: CCNA Practice Tests 200-120