ccna vs network

Network devices (routers, switches, firewalls, and so on) require an operating system as well as computers. Network devices use a dedicated operating system, collectively known as iOS (Internetwork Operating system, network operating system).(1) Common connection mode of network equipment:There are four common ways to

[Lab environment] Cisco Packet Tracer 5.3.2 [PURPOSE] Exercise the use of the ip default-network command to declare the default route in the network routing protocol. [Experiment topology] [Lab description] Vrogw GW and ISP refer to the default route to simulate the network between the gateway and the carrier. The VPN protocol is only deployed in the

CCNA advanced network technical materials Network Basics Encapsulation: attaches necessary protocol information to the data before network transmission. Unencapsulate: unseal data from a specific protocol header. Peer layer communication: each layer of the source sender's OSI model must communicate with the peer layer

CCNA Authentication-basic network knowledge-1-3 ensures confidentiality by allowing intended and authorized recipients (individuals, processes, or devices) to read data to maintain data privacy. Use a powerful user authentication system, a password that is difficult to guess, and frequent password changes to restrict access to stored data on communication and Internet devices. Encryption of content ensures

display the configuration saved in NVRAM.Show running-config-is used to display the contents of the current run configuration file, the configuration of a specific interface, or the mapping category information.The show IP interfaces-is used to display IPV4 statistics for all interfaces on the router. To view statistics for a specific interface, enter the show IP Interfaces command followed by the specific interface slot number/port number. Another important format for this command is show IP i

[Lab environment] GNS3 (Because Packet Tracer does not support DHCP-related commands, the GNS3 Simulator Based on the cisco ios image file can also be used on a real machine) [PURPOSE] Exercise configuring the DHCP service on a Cisco router to automatically allocate IP addresses [Experiment topology] Lab procedure] 0. Connect the device according to the topology and configure the IP address of the router port. The client uses DHCP to obtain the IP address. 1. Create a DHCP address pool and it

1. Network Segment (segmentation)In order to cope with the increase of the network caused by slow user response and traffic congestion, the large network is divided into a number of small network behavior. You can use devices such as routers, switches, and bridges.2. Common reasons that cause LAN congestion:① too many

Based on security considerations, many companies may use the Wide Area Network Technology for Intranet Communication. Lan Wan Network cable Serial Line Transmission Distance near Long Transmission Distance > 1000 m Asynchronous transmission Synchronous Transmission Fast transmission speed Slow transmission speed To achieve syn

on: 20 under: 21POP3: Mail Receive 110SMTP: Mail Send 25Http:web Service 80Telnet: Telnet 23DHCP: Dynamically distributed IPDNS: Domain Name resolutionIcmp:ping Network Layer ServiceEncapsulation and unpackingData Application Layer DataEncryption + Compression +data presentation layer decryption + decompression +dataVerifying +data session-level validationTcp+data Transport Layer to TCPSOURCE ip+ Purpose Ip+tcp+data

can be abbreviated as ", but the entered character is unique. If it is not unique, an error is returned. % Ambiguous command: "E" # The system cannot recognize the commands starting with E because they are not unique. Switch> en # The command starting with EN is already unique. The system recognizes it as an enable command. Switch # Use the abbreviated command en to successfully log on to the privileged Mode Switch # configure? # Command addition? Commands or parameters that can be entered aft

Cisco CCNA Chapter 4 answers in the second semester, Cisco ccna second semester 1. 2. All the routers running the Distance Vector Routing Protocol have disconnected all power supplies (including spare batteries ). What happens when these routers are reloaded? They share all route information stored in NVRAM before the power-off with the directly connected neighbor

Cisco CCNA Chapter 2 answers for the third semester, Cisco ccna for the third semester 1. Which command line interface (CLI) mode allows users to configure switch parameters such as host name and password? User Execution Mode Privileged Execution Mode Global Configuration Mode Interface Configuration Mode 2.

Cisco CCNA Chapter 7 answers for the third semester, Cisco ccna for the third semester 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12.

Cisco CCNA Chapter 6 answers for the third semester, Cisco ccna for the third semester 1. 2. 3. 4. During the implementation of inter-VLAN routing, what are the important considerations when configuring the sub-interface of the router? The physical interface must have an IP address. The sub-int

Cisco CCNA Chapter 5 answers for the third semester, Cisco ccna for the third semester

i am the 51CTO lecturer Kanhaijiang, at the Institute 11.11( People's IT Learning Festival) Come on the occasion, and everyone to share my CCNA customs clearance experience. The text is coming ~ ~ ~in writing this title, I seem to have returned to the original to learn Cisco Qizaotanhei, but a fun time. Obviously, I am definitely not a network genius, no extraordinary talent, even at that time even a comput

------------------------------ CCNA ----------------------------------- CCNA Learning Guide (Chinese sixth edition) Clear EditionHttp://bbs.hh010.com/thread-77598-1-1.html CCNA (640-802) full course handouts (no code version)Http://bbs.hh010.com/thread-78033-1-1.html Course Materials for 1234 semesterHttp://bbs.hh010.com/forum.php? Mod = viewthread tid = 28750

0 Basic words first to choose "CCNA Study Guide", simulator must be installed, unless there is a device can actually take the environment. "TCP/IP Routing technology" is too early, after the exam CCNP later. If you really want to know more about it, you can learn a bit. CCNA, who had just begun to learn, read that the book was basically a Bible-class.In addition, it is better to look at the basic Books of c

links between switches are trunk links 2. Configure The VTP Client ● Configure VTP client Mode ● Configure trunk ● Verify the VTP status ● Configure the access port. When a vswitch works in VTP client mode, a new VLAN cannot be added, but a port can be allocated to an existing VLAN. 1.2.2 VTP Configuration 1. Restore factory Configuration Switch # erase startup-config Delete STARTUP configuration file switch # Delete VLAN. dat Delete VLAN configuration file 2. configure all trunk links 3. Confi

[Lab environment] Cisco Packet Tracer 5.3.2 [PURPOSE] Do not describe the basic commands of Cisco IOS too much. Focus on learning Common Cisco IOS skills to improve the efficiency of subsequent experiments. [Experiment topology] Lab procedure] 1.