PASS HOTApr 1, 20203 min readCcna 200-301 Outline Why does the IP protocol still need the UDP protocol?Since the IP protocol can also perform connectionless and unreliable transmission of data, why do you need the UDP protocol? Protocol...
PASS HOTMar 30, 20203 min readChallenges and opportunities brought by cloud computing to network equipment venI don't know from which day, the three words of cloud computing will slowly enter people's field of vision. At first, it was only...
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PASS HOTMar 26, 20203 min read350-401 Encor Cisco What are the basic core protocols on the Internet?For students who have studied the TCP / IP protocol, this is not a problem, the IP protocol. For the public, more explanation is needed....
PASS HOTMar 24, 20203 min readWhat is the difference between the new Cisco CCIE EI and the old CCIE RS?The new Cisco EI CCIE enterprise infrastructure has been released, and RS routing exchange has officially withdrawn from the arena of...
PASS HOTMar 23, 20203 min readEncor 350-401 Lab How to deal with various network interview questions?The interview asked "the server is not responding" when the client accesses the server, how to troubleshoot the problem. How should such...
PASS HOTMar 18, 20203 min readHow many packets does TCP need to receive to confirm?When the server sends data to the browser, sometimes the server sends a packet, and the browser will reply with an ACK. Sometimes the...
PASS HOTMar 16, 20204 min readWorking principle of devices between router Lan portsQ1: The router works at the IP layer and is responsible for the communication of different IP devices. The switch works at the data link...
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PASS HOTMar 12, 20203 min readDoes the DNS root server store all the domain in the world?If I apply for a domain name for my personal website, have I taken up the resources of the DNS root server? If not, whose resources do I...
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PASS HOTOct 28, 20193 min readccie r&s lab certcollection On the status of IPv6 in the financial industryThe meaning of IPv6 Beginning in the 1990s, the IETF noticed that the mainstream version of Internet addresses IPv4 was running out. In...
PASS HOTOct 18, 20195 min readCustomize what you think, ubiquitous Cisco collaboration Now more and more employees are already on the move: 1.Up to 90% of employees work outside the company's headquarters; 2.Up to 60% of...
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PASS HOTOct 10, 20195 min readThe Experience Of The CCIE R&S Exam I arrived at Cisco at 7:40 in the morning. I’m on the outside the door of the System building. At the beginning of October, Western...
