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Aleks04 [339]
3 years ago
11

When troubleshooting Domain Name System (DNS) problems, which helpful feature do public servers usually support

Computers and Technology
1 answer:
seropon [69]3 years ago
5 0

Answer:

ICMP echo requests.

Explanation:

A Domain Name System (DNS) can be defined as a naming database in which internet domain names (website URLs) are stored and translated into their respective internet protocol (IP) address. This simply means that, DNS is used to connect uniform resource locator (URL) or web address with their internet protocol (IP) address.

When troubleshooting Domain Name System (DNS) problems, one helpful feature the public servers usually support is an ICMP echo requests.

ICMP is an acronym for Internet Control Message Protocol and it is a standard protocol for communicating network errors in the form of messages such as Time exceeded and Destination unreachable.

In Computer Networking, an echo reply and echo request are implemented with a command utility referred to as ping. When a user sends an echo request message with the ping program, a successful attempt will return an echo reply message.

Hence, when troubleshooting Domain Name System (DNS) problems, a user should ping a public server such as a Google DNS server with the IP address (8.8.8.8 or 8.8.4.4), Cloudfare with 1.1.1.1 or the common 4.2.2.2 DNS server. If successful, it means the name-server was resolved properly into an IP address and therefore, there's an active connection on the network.

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Raul needs to ensure that when users enter an order into the tblOrders, the shipping date is at least two days after
bagirrra123 [75]

Answer:

input mask

Explanation:

Microsoft Access is a database application used to stored data. It is a relational database with rows and columns of data tables in its database.

Data validation is a tool in Access used to put a constraint on how data is entered in the table. The input mask is a data validation type that forces users to enter data in a specified format for a given field or column.

7 0
3 years ago
Read 2 more answers
Explain why you cannot the Apple OS install on a regular windows computer and vice versa, without the aid of a virtualization so
Phoenix [80]

Answer:

The reason is due to proprietary design of the Operating System (OS) which require a virtualization software to blanket or "disguise" the hardware (processor) borderlines of the computer onto which it is to be installed.

Explanation:

An Apple system that has the RISC processor and system architecture which has an operating system made entirely for the Apple system architecture

If the above Apple OS is to be installed on a windows computer, then the procedure to setup up the OS has to be the same as that used when on an Apple system, hence, due to the different processors and components of both systems, a virtualization will be be needed to be provided by a Virtual box, Parallels desktop or other virtualization software.

6 0
3 years ago
A network administrator notices that some newly installed Ethernet cabling is carrying corrupt and distorted data signals. The n
MakcuM [25]

A network administrator notices that some newly installed Ethernet cabling is carrying corrupt and distorted data signals. The new cabling was installed in the ceiling close to fluorescent lights and electrical equipment

Two factors may interfere with the copper cabling and result in signal distortion and data corruption are :

EMI

RFI

Explanation:

  • EMI (electromagnetic interference) is the disruption of operation of an electronic device when it is in the vicinity of an electromagnetic field (EM field) in the radio frequency (RF) spectrum that is caused by another electronic device.
  • During EMC testing, radiated emissions measurements are made using a spectrum analyzer and or an EMI receiver and a suitable measuring antenna.
  • EMI (Electromagnetic Interference) is also called RFI (Radio Frequency Interference).
  • Conducted RFI is unwanted high frequencies that ride on the AC wave form. Radiated RFI is emitted through the air. There are many pieces of equipment that can generate RFI, variable frequency drives included.
  • The internal circuits of personal computers generate EM fields in the RF range.
3 0
3 years ago
In c++
Elodia [21]

Answer:

class studentType: public personType

{

public:

virtual void print() = 0;

virtual void calculateGPA() = 0;

void setID(long id) {

studentId = id;

}

void setCourses(const string c[], int noOfC) {

noOfCourses = noOfC;

for (int i=0; i<noOfCourses; i++) {

courses[i] = c[i];

}

}

void setGrades(const char cG[], int noOfC) {

noOfCourses = noOfC;

for (int i=0; i<noOfCourses; i++) {

coursesGrade[i] = cG[i];

}

}

long getID() {

return studentId;

}

string* getCourses() {

return courses;

}

char* getGrades() {

return coursesGrade;

}

studentType(string fName = "", string lastName = "",

long id = 0, string c[] = NULL, char cG[] = NULL, int noOfC = 0);

private:

long studentId;

string courses[6];

char coursesGrade[6];

int noOfCourses;

};

Explanation:

Code rewritten

5 0
3 years ago
The class ________ is the portion of a class that is visible to the application's programmer.
Lady_Fox [76]

The correct option to this question is class interface.

The class interface is the portion of a class that is visible to the application’s programmer. Class interfaces mean implementation of public methods of the class. These class interfaces of the class are easily visible to the application’s program either the one who is developing the application program or the one who is reading the application’s code.

Class interface can be seen by the other classes as its public face. Class interfaces separate the class’s implementation and its interaction with other classes. That way the implementation of the class can be modified easily without being known by other classes. Basically, the programmer who is developing the program, all the portions of the programm is visible to that programmer.

For example, the class is written below:

class class-name

{

private members;

public method()

{

//method defination

}

}

when the class object is created, the code of the object to the programmer is visible.

<u>While the other options are incorrect:</u>

  • Form: the form is used to collect information from the user. It can be build using front-end development tools
  • Design: Design is a term used in computer or software engineering to make something from scratch or beginning. It can be  methodologies, standards, or techniques etc.
  • Control: Control is the mechanism or a term used in software development to control the program or execution of the program.

You can learn more about class interface at

brainly.com/question/13089781

#SPJ4

The complete question is found while searching over internet:

"

<em>The class ________ is the portion of a class that is visible to the application's programmer.</em>

  • <em>Interface</em>
  • <em>Form</em>
  • <em>Design</em>
  • <em>Control </em>

"

7 0
2 years ago
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