1. Which of the following protocols is not an application level protocol in ISO/OSI 7 layer networking model?

A) FTP
B) TCP
C) HTTP
D) SNMP



2. Which of the following statements is true about classic network and VPC?

A) they can do same thing
B) you can customize your private IP in a classic network
C) you can customize your private IP in VPC
D) servers inside VPC can only communicate to other VPC network



3. Which of the following statements is NOT true about EIP and NAT gateway?

A) NAT gateway can support multi servers inside VPC to access public internet through one public IP
B) EIP can be bind to different ECS servers at the same time
C) Different EIP can't share bandwidth
D) NAT gateway can support shared bandwidth between several ips



4. Which of the following products is designed to provide secured and stable network connection among different VPCs?

A) ECS
B) SLB
C) Security Group
D) Express Connect



5. Which of the following reasons is the least possible reason leading to a network attack?

A) technical skills show off of hacker
B) business competition
C) blackmail
D) help to find system vulnerability