Hi! I have been posted content of ccna1 final exam (latest and only question.) I will post the answer and insert image on sunday. If you care, please subscribe your email an become a first person have full test content. Subcribe now Some question have not content because this question have images content. So that can you wait for me? SUNDAY 1. A user sees the command prompt: Router(config-if)# . What task can be performed at this mode? Reload the device. Perform basic tests. Configure individual interfaces. Configure individual terminal lines. 2. Refer to the exhibit. Host A attempts to establish a TCP/IP session with host C. During this attempt, a frame was captured with the source MAC address 0050.7320.D632 and the destination MAC address 0030.8517.44C4. The packet inside the captured frame has an IP source address 192.168.7.5, and the destination IP address is 192.168.219.24. At which point in the network was this packet captured? leaving host A leaving ATL leaving...
Sometimes when setting a variable, you may want to do something else with the given value other than instantly place it in the class's variable: for instance, you may want to validate it or update another value that is related.
ReplyDeleteBasically, it lets the class which owns that variable control what can be done to it, and the specific series of events that occur when it is altered.
e.g. we can verify that user setting age of person is not more than 150 or less than zero.
public class Person{
private int age;
public int getAge(){
return this.age;
}
public void setAge(int age){
if(age<150 && age>0){
this.age=age;
}
}
}
It also needs to be mentioned that it is not always better to use "set" methods. Blind compliance with patterns may lead to overcomplicated code. If class acts as just simple (really simple) data container, then public access is often acceptable. In example, look at java.awt.Rectangle or at java.awt.Point classes.
ReplyDeleteIt all has to do with object orientation and how strict you are in that doctrine. If you strictly follow all the guidelines, it is bad to directly use methods and identifiers from one class, by the other. Technically there is no objection.
ReplyDeleteThis discussion is the same as the static - no static discussion. The (self proclaimed) guru, found that sacrilege, but you put your computer no obstacle in the way, if you put your whole program is static.