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Yeslab October July 12, instructor Chen ccna + ccnp real machine rack Practical Course

Yeslab October July 12, instructor Chen ccna + ccnp real machine rack Practical Course Ccna is an entry-level course in the network industry. In order to give students a good understanding of the network, yeslab provides the real Equipment Rack. The students build the topology and complete the configuration to create

CCNA Training Course (3) -- Vlan VTP relay single-arm route generation Tree Protocol

CCNA Training Course (3) -- Vlan VTP relay single-arm route generation Tree Protocol This is the third day of the CCNA training course. There are many knowledge points on this day, and the experiment content is gradually becoming more complicated.VLAN A vswitch separates the conflict domains and the broadcast domains.

CCNA Course Five

subnet; the last IP address that can be assigned to the PC; The subnet's broadcast address.Two. The number of IP addresses required for each subnet is known1. Calculate the number of bits required for the host part (2 of the n is slightly larger than the number of IP, n is the host bit)2.32-host bits = = number of network bits3. Calculate subnet mask for subnets4. Reach the subnet segment (network address)5. The first IP address that can be assigned to a PC under each subnet; the last IP addres

CCNA Course IV

. Trunk between switches2. All switches establish the same VLAN, (VTP)3. Each switch strokes the interface into the appropriate VLAN4. Configuring Layer 3 Information (IP)VtpVTP is used to unify the creation and deletion of VLAN information.VTP3 mode:Server: Can add, remove VLANs, learn VLAN information, transmit VLAN information to other peopleClient: Can not add, delete VLAN, can learn VLAN information from server, pass the learning information to othersTransparent: You can only add and delete

A simple HTML5 page Online Crash tool! (Of course, this article mainly describes the structure of his results)

Share a fun web App page Crash tool of course the main is to let everyone look at his principles and look at his structure everyone should guess this. This is the use of a page after the current Div added an active, And then using the CSS to control the effect this is undoubtedly the use of the maximum width of 640 layout similar to the JS framework I have shared 2 such as fullpage.js,slip.js can be found i

Get started with Python with C or C + + basics: Python Crash Course 4 action list 4.1--4.3

performing simple statistical operations on a listLike the Max in C + +, the min function, but this three is quite powerful with traversing the entire list to find the maximum, minimum, and value.Sample code:1 digits = [1, 2, 3, 4, 5, 6, 7, 8, 9, 0]2print(min (digits))3pri NT(max (digits))4print(sum (digits))Four, list parsingThe explanation in the code parsing book is that the code for the For loop and the creation of the new element is merged into a single line and the new element is automati

Get started with Python with C or C + + basics: Python Crash Course 5 if statement

ifAge :4 Print("yout Admission cost is $")5 elifAge :6 Print("Your Admission cost is $")7 Else:8 Print("Your Admission COSR is $")The only thing to note is that Python and Linux pay the shell the same, else if if is shrunk to elif.Four, using the IF statement to process the list  1. Check for special elements  In the For loop with an if statement, the sample code is as follows:1names = ['Peter','Mina','Mike']2 3 forNameinchnames:4 ifName = ='Peter':5 Print(Name.title ()

MySQL Crash Course #07 # Chapter 15 relational database. INNER JOIN. Vs. Nested subquery

temporarily), it is best to use the INNER join on statement so that you never forget the type of join. Joins are made temporarily at run time, and the more associated tables consume resources, so it's not necessary to don't mess with tables It Pays to experiment As you can see, there are often more than one-to-perform any given SQL operation. And there is rarely a definitive right or wrong. Performance can affected by the type of operation, the amount of data in the tables, whether ind

MySQL Crash Course #13 # Chapter 21. Creating and manipulating Tables

) REFERENCES appearance (the corresponding primary key field name in the appearance); FK_ID is the name of the foreign key. For more foreign key related content, please refer to foreign KEY constraintsModification of complex table structuresCOMPLEX table structure changes usually require a manual move process involving these steps: Create A new table with the new column layout. Use the INSERT SELECT statement (see Chapter, "Inserting Data," for details of this statement) to copy th

Google Release Machine learning Crash Course (Chinese!) Free! )

Hope to learn the gospel of the Children of Learning machine, the world's largest AI company Google launched a "machine learning Crash Course", not only the whole Chinese, but also free to listen to OH. The course is 15 hours, the course is compact, so the reader friends, still need you have certain basic knowledge of

MySQL Crash Course #12 # Chapter Full-text searching

default to be within three letters. MySQL has a built-in stop word list , it's the same as the short word, of course, this can also be manually modified, specific methods can search for information, check the document. Many words appear so frequently that searching for them will be useless (returning too many results). As a result, MySQL grants 50% the rule that a word appears in 50% or more rows, which is treated as a deactivated word and is

MySQL Crash Course #16 # Chapter 24. Using Cursors + MySQL loop

CREATE TABLE IF not EXISTSOrderTotals (Order_numINT, totalDECIMAL(8,2)); --Open the cursor OPENordernumbers; --Loop through all rowsREPEAT--Get Order number FETCHOrdernumbers intoo; --Get The total for this orderCall OrderTotal (O,1, T); --Insert order and total into ordertotals INSERT intoordertotals (Order_num, total)VALUES(o, t); --End of LoopUNTIL DoneENDREPEAT; --Close the cursor CLOSEordernumbers;END;Who's going to do all this work? Is it a top-level application or a dat

Get started with Python with C or C + + basics: Python Crash Course 4 action list 4.4--4.5

listLet's look at the following code:1names = ['Peter','Mina','Mpeter','Katherine']2My_friends =names[:]3 4 Print('I have a list of my friends:')5 Print(names)6 Print("however Mina have a same list!")7 Print(my_friends)8 Print("But Mike just has both in my list")9Mike_friends = Names[0:2]Ten Print(mike_friends)The principle of copying a list is actually simple:  Declares a list, and assigns a value, and then declares a list B, and then iterates through list A and passes the value to the end of

MySQL Crash Course #14 # Chapter 22. Using views

this you know what is (and the rules and restrictions that govern them), let's look at View creation: Views is created using the CREATE VIEW statement. To view the statement used to create a view, use SHOW create view viewname;. To remove a view, the DROP statement is used. The syntax is simply DROP VIEW viewname;. To update a view the DROP statement and then the CREATE statement again, or just us E Create OR replace VIEW, which would create it if it does not exist and r

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