In recent years, the importance of network security has grown significantly due to the increasing number of cyber threats. To protect sensitive information, Organizations are adopting advanced （1）solutions such as end-to-end encryption and multi-factor authentication. One popular cryptographic method is （2）,which ensures that data remains confidential transmission. Additionally,the use of（3）technology is becoming more common to secure communications and prevent unauthorized access to networks. As cyber attacks evolve, it is imperative for businesses to implement robust（4），measures and continuously update their systems to address new vulnerabilities. Moreover, emerging technologies 1ike （5）can help analysts detect anomalies and respond to threats more effectively.
（1）
A．network
B．hardware
C．software
D．cryptographic
（2）
A．blockchain
B．digital signature
C．encryption
D．hashing
（3）
A．blockchain
B．cloud
C．peer-to-peer
D．a(chǎn)uthentication
（4）
A．design
B．Storage
C．performance
D．security
（5）
A．6G
B．virtual reality （VR）
C．a(chǎn)rtificial intelligence （Al）
D．3D printing