Necessary for network operation and maintenance
1. What is BIOS? How to enter BIOS?
BIOS basic input and output system, generally press DEL or F2 to enter the BIOS setup program.
02. What is a virtual machine?
1. A software program running on a computer that simulates computer hardware functions to provide an independent computer environment for other software programs.
two。 Explain what RAM and ROM are and their respective characteristics.
RAM: random access memory, readable, writable and easy to lose
ROM: read-only memory, readable, non-writable, not easy to lose.
03. Virtual machine operation mode?
1) the host architecture is installed on the operating system as an application software, and multiple operating systems can be installed on this application software.
2) Native architecture
The virtual machine software is installed directly on the computer hardware, and the virtual machine itself is an operating system.
3. What is TCP/IP protocol?
TCP/IP communication protocol is the most complete and widely supported communication protocol at present. It allows computers with different network architectures and different operating systems to communicate. It is the standard communication protocol of Internet.
04. IP address function, composition, classification?
1) function: the network address used to identify a node
2) composition: network bit + host bit, 32 bits, represented by 4 decimal numbers, used in between. Separate
3) Classification:
A 1-127net + Master
B128191 Network + Network + Master + Master
C 192-223 Network + Master
D224239 Multicast (Multicast)
E 240254 Scientific Research
06. Private address range:
Category A 10.0.0.1 ~ 10.255.255.254
Category B 172.16.0.1 ~ 172.31.255.254
Class C 192.168.0.1 ~ 192.168.255.254
What are the advantages of the 4.NTFS file system?
Improve disk read and write ability
High reliability: encryption, access control list
Disk utilization: compression, disk matching
5. What are the characteristics of the NTFS file system?
Access permissions can be set for groups of different users
Users must have the appropriate access rights to access resources
It can prevent resources from being illegally tampered with and deleted.
What are the permission rules for 6.NTFS? What are the characteristics of these rules?
Accumulation of permissions: accumulation of valid NTFS permissions of users on the basis of non-conflict of permissions
Refusal first: rejection is above all else.
Inherit permissions: the default subfolder or subfile inherits the permissions of the parent folder, and the subfolder can cancel the permissions of the parent folder.
7. How to determine the share permissions and the final effective permissions of NTFS?
Intersection of sharing permissions and NTFS permissions
08. What is the meaning of ALP rules?
Add local users to local groups, and finally only assign permissions to local groups (meaning of the ALP rule)
10. How to access shared folders
1) browse through "Network" ("Network Discovery" must be enabled)
2) through the UNC path:\ server address\ share name
3) Mapping network drive: net use H:\ server IP\ share name
twelve。 Advantages of dynamic disk
Compared with the basic disk, it has stronger scalability, high reliability and high read and write performance.
01. What is a domain?
The computers in the network are logically organized together for centralized management, which is called a domain.
02. What is a domain controller (DC)
In a domain, there is at least one domain controller, the user account and security database of the entire domain are kept in the domain controller, and a computer with an active directory is called a domain controller, and the domain administrator can control the behavior of each domain user.
03 what are the prerequisites for installing DC?
Local administrator privileges, the operating system version must meet the windows server version, have TCP/IP settings, have enough free disk space, have at least one NTFS partition, and require DNS support.
08. What is DNS and its function?
DNS (Domain Name System) domain name system
Function: domain name is resolved to IP address, IP address is resolved to domain name.
