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What is the difference between dedicated network cables and common cabling on the Cisco console?

When routers and switches work normally, you do not need to worry too much about wiring issues. However, when the network encounters problems or changes, wiring knowledge may be of great help to you. In this article, we will introduce you to some basic wiring knowledge, and describe the details of the Cisco console dedicated network cable. The network cable belongs to the first layer of the Network: physical layer. Only the correct network cable can ensure the normal operation of the network. In

Hands-on practice-DHCP Experiment

100.100.100.100!interface Ethernet1/0ip address 23.1.1.2 255.255.255.0!ip route 10.10.10.0 255.255.255.0 23.1.1.1ip route 20.20.20.0 255.255.255.0 23.1.1.1 Configure Router2 as follows: interface Ethernet1/0ip address 10.10.10.1 255.255.255.0ip helper-address 23.1.1.2!interface Ethernet1/1ip address 23.1.1.1 255.255.255.0!interface Ethernet1/3ip address 20.20.20.1 255.255.255.0ip helper-address 23.1.1.2 The DHCP experiment results are as follows: PC2:R1#Interface FastEthernet0/1 assigned DHCP a

IIS vulnerabilities in Windows server and how to fix them

in a full way to create a secure Web environment.Most of the vulnerabilities may not be considered "critical", but they must be problematic for a long time. As you can see, they are relatively simple to solve. In fact, it's only your time to solve their only consumption. By finding and resolving these issues, the security of the business will be successful and will help the vulnerability scanning and security assessment reports look clean.Once you've dealt with the security of Web server fundam

Troubleshooting of vswitch Network Communication

Troubleshooting of vswitch Network Communication Cisco's catalyst switches are generally not prone to faults. Once a fault occurs, it is usually difficult for CCNA certified trainees to detect and troubleshoot, this section summarizes some minor faults that often occur during the use of vswitches to help students pass authentication and adapt to a simple working environment. Faults related to physical layer connection: Physical Layer line connectio

Basic skills required for linux O & M engineers

aspects may not be needed, because the O M personnel still need to check the most, which optimization and Development Statements won't be used by you. Mysql (detailed ideas for manual compilation, addition, deletion, modification, query, authorization, and backup and restoration) 7. Firewall is hard to learn. Firewall is also a difficult problem. It is easy to say, easy to say, and the most important thing is to understand the rules. If you have learned

Exploration of OSPF and BGP routing protocols in OpenBSD

. What is the scope of application of the protocol? OSPF is mainly used in the LAN construction of medium-sized companies, from two to 2000 devices. Of course, this is not only limited to 2000 servers, but also more. BGP is applied to a larger scope. Generally, a data center is connected to the entire internet. For more information, see Cisco CCNA and CCNP. 4. Why should I use OpenBSD to replace Cisco and Huawei vrouters? I am familiar with Cisco

Configure and collect evidence: Working Principle of Telnet Remote Management Protocol

(config-line) # login * Indicates logon authentication for telnet. Router (config-line) # password ccna * configure the logon password for telnet. Router (config) # enable password ccna2 * configure the enable user password for the vro. Step 3:Use the protocol analyzer to obtain data frames for Telnet. Enable the protocol analyzer before Telnet to the target vrotelnet r1194251.1 on the host at 192.168.1.2. Then, complete the Telnet logon. After the

Getting Started with Java programmers: English Well, how does it affect programming?

, see About the work of programming, any treatment slightly better, will mention such as: good English reading and writing ability, can read English API interface and so on, visible English has become the programming work to get a high salary condition. 3, all you need is written in English as a programming person, there is a household name of the site-stack Overflow, because the site provides a variety of questions about programming technology, we can find many answers from this site, including

2015 My Thoughts

When we were 18 years old and found that time is like a meteor flies, once in school every day sigh time too slow to read the novel pass time. 2015 I was 23 years old to greet is 24 years old but how can I say very tangled, on the technical road has been hovering not before the salary naturally, it is time to calm down to think about my way out.2015 look back before have done desktop operations, ERP operations, but also contact network management but did not very deep, do ERP operation, database

Let me introduce myself.

Let me introduce myself.Study number 78, this year 20, is only a college student, before the vocational school read 2 years of secondary school, then entered the adult education of Chengdu University of Science and Engineering, hoping to get better learning opportunities. However, the reality is always cruel, even under the name of UESTC, the quality of adult education is still unsatisfactory, so the majority of the time spent in the self-learning and ascension.Some of the things I've learned

The first blog in the IT industry to play tumbling a few years, I do not know where the future of the new IT consultants

an in-depth understanding of ISP networkshope to obtain a certificate: CCNA, CCDASecurity Aspects (Security)Background: Shallow understanding of firewallsDemand:1. want a comprehensive understanding of the security system2. hope to have a thorough understanding of the network in full3. want to have a certain understanding of safety regulations, etc.hope to obtain a certificate: CompTIA security+, CISA, CISSPSystem Aspects (System)Background: Ye

HR-Provided CV revision advice (back up, change your resume to see it again)

the reproduced format is not messy ... Otherwise it's better not to turn ...Of course, if you would like to write about the process of tossing and writing ... I don't want you to do KOL or anything. Just record your own life ...For example, toss a VIM plug-in ... such as the OpenVZ machine installed XP and so on ... Everything is possible ...If you do not want to write things also lazy reprint ... Leave a micro-bo what can be done ... In short not see the word also convenient I know you ...You'

Certificate ~~~ Speaking of bad topics

Some comments about the research, those with evidence, and those with the research have all seen the completion of the ccnp. Here I want to say a few words to my friends. I am a network administrator. After MCSE + ccnp, I have long wanted to post this post, but I have never had time to sort it out, because during the time of chrysanthemum, I have seen a lot of questions and opinions on the certificate, and I want to talk about it here. it is silly to say that the purpose of learning Na was to le

Basic configuration of Nginx initial exploration

What does Nginx do? Why is he so valued?For this problem in the simplest terms, Nginx is similar to a valve software, he to control the flow to the side, to achieve load balancing. such as landing a very hot site, although the site is a domain name, but certainly the room will not be only a server, but a good dozens of or hundreds of thousands of servers in the work together, when the user access, Nginx will be assigned according to the situation users to different sub-server access, This will n

Work these years to the technical learning process some summary and sentiment

realize that I did not give my parents a little common sense of my major. Confused Confusion is due to less work. Indeed, you do not understand anything, of course, I do not know the computer industry segments in the end which more potential? What's more, you've just come into contact with "real" computers. So always want to get rid of this chaotic confusion, will "not choose the pros and cons" find something to learn. In addition to specialized courses, will also self-study

51CTO Data Summary 20150504

"A total of 404 hours"http://bbs.51cto.com/thread-1073969-1.html 15.0 Basic Cocos2d-x Development video (including teacher live interactive lesson)Http://bbs.51cto.com/thread-1112711-1.htmlExam Certification:16. You can't miss the MCSE Certification Training Video Course!Http://bbs.51cto.com/thread-1067536-1.html17.CCNA, CCNP, H3C certified quality video CourseHttp://bbs.51cto.com/thread-1066497-1.htmlDatabase:18.16,700 of the Oracle video courses,

Fragmented text, messy mood...

". Think of this, I am still feeling guilty, and can only work hard to wash away all the unhappiness and oppression ...... 2. Recalling Dongguan I have been wandering for four years in Dongguan. Suddenly found that it was a "Chaotic" four years. When I first entered the factory for assembly line, I felt that the office clerks were very enviable. after half a year of hard work and hard work, finally, the company's inspection department was promoted directly from the pipeline as an assistant. A

Subnet Mask and IP address calculation network address and broadcast address conversion

is 202.112.14.159.In the ccna test, you also need to plan the subnet address and calculate the subnet mask based on the number of hosts on each network. This can also be calculated based on the above principles. For example, if a subnet has 10 hosts, the IP address required for this subnet is:10 + 1 + 1 + 1 = 13Note: The first 1 in the addition refers to the gateway address required for the network connection, and the second two 1 in the addition ref

How to become an excellent Integrated Wiring Training Instructor

, this is not suitable for large cabling projects, nor can it meet the requirements of wiring labels and color management. Therefore, instructors are required to have the ability to control the overall situation of the Weak Current. They must have the correct wiring concept and cannot be influenced by some traditional unreasonable ideas. Http://anheng.com.cn/news/6/494.html (6) clear thinking, good expression, rhythm, humor, and wisdomThe training materials have goo

Original: security of the local administrator account in Windows

Purpleendurer note:See: http://techrepublic.com.com/5100-1009_11-5692378.html? Tag = NL. E102 Here, only the specific operations are translated. Secure the local administrator account in WindowsSecurity of the local administrator account in Windows By Michael Mullins ccna, MCP Takeaway:Did you know the Windows Local Administrator account is the only access someone needs to completely wreak havoc on your network? Locking down this account can go a long

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