In circumstances where required a large number of subnets, an IP network is required that has more hosts bits to borrow from. For example, the class B network address 172.16.0.0 has a default mask of 255.255.0.0, or /16. So, this address has 16 network bits in the network portion and 16 host bits in the host […]
To understand subnetting at a classless level see the following classless subnetting examples. The private network address 192.168.10.0/24, In figure 1; the first three octets are displayed in decimal, while the last octet is displayed in binary. This is because we will be borrowing bits from this octet to create more sub-network. The subnet mask […]
Each interface on a router which is connected to a network is required IP address and subnet mask. The IP address and subnet mask are used to identify the specific broadcast domain. Remember that we have already learned the following topics in the previous chapter: Introduction to IP address IPv4 Addresses IPv4 Host and […]
Broadcast domains are a logical parts or divisions of a computer network in which a broadcast is forwarded. In a broadcast domain, all the devices can be reached via broadcast at the datalink layer (OSI Layer 2). A Broadcast Domain consists of all the devices that will receive any broadcast packet; originating from any device within the […]
Subnetting is used to design, implement and manage an effective IP addressing plan. It is used to partition a single physical network into more than one smaller logical sub-networks (subnets). An IPv4 address contains a network portion and a host portion. These two portions of addressing allow for basic network groupings that facilitate in routing […]
The Ping utility is only used to test connectivity between two hosts but traceroute provide information about the details of devices between the two hosts. Traceroute (tracert) is an also a utility that generates a list of hops that were successfully reached beside the path. The list provided by traceroute provide important information for verification […]
Short for Packet InterNet Groper, Ping is a utility that uses ICMP echo request and echoes reply messages to verify connectivity between hosts. Ping can be used with both IPv4 and IPv6 hosts.To test connectivity to another host on a local network or remote network, an echo request is sent to the address of destination host […]
The Cisco Certified Network Associate – Routing and Switching (CCNA – Routing and Switching ) certification title has become the leading entry level network certification. The Cisco Certified Network Associate (Routing and Switching) certification was developed by Cisco to test the knowledge of candidate at networking at entry level. The CCNA – Routing and Switching certification analyzes the candidate’s ability to install, configure, operate, and troubleshoot medium-size networks.
The exam is scheduled for 120 minutes and has 50-60 questions on it. The people whose language is not English can get additional 30 mints.
During the exam, no outside reference materials are allowed for candidates. The following topics are general guidelines for the content. In order to improve reflect the contents of the exam and for clarity purposes, the below guidelines may change at any time without notice.
- Operation of IP Data Networks
- LAN Switching Technologies
- IP addressing (IPv4/IPv6)
- IP Routing Technologies
- IP Services
- Network Device Security
- WAN Technologies
CCNA Routing and Switching certification have many advantages to the employee and employer. These include future-proofing and greater utilization of network capabilities resulting in increased employee productivity and an improved ROI on network investments. The employees get training on the newest hardware and software. So when the employers get a chance to upgrade their hardware and software, their employees will have the tools and skills to hit the ground running when new projects begin.
The CCNA Routing and Switching certification is valid for three years at such time, you will need to recertify.