A user reports that they cannot cd to /tmp/application. A system administrator entered the following command： （1）ls -ld /tmp/application （2）drw-r--r-- 4 root system 512 Jan 15 14：09 application What is the most likely cause of the problem？（） The /tmp/application should be globally writable.。 The /tmp/application directory should be executable.。 The /tmp/application directory should be owned by the user.。 The /tmp/application directory should have the sticky bit set.。
简述微生物在自然界氮循环中的作用。
During Company.com planning session，Company.com presents the details of the current Network design. The network design serves four separate company facilities， each on as separate subnet. As part of a disaster recovery plan， the customer is evaluating the use of HACMP. Specifically， the have reviewed IPAT via IP aliasing and are questioning the number of IP subnets required. Given the customer’s current configuration，what is the recommended minimum number of IP subnets that would be required？（） 4。 5。 6。 8。
A system administrator wants to give full read/write/excute access to the owner and group of the /stuff directory and all subdirectories and files， but only allow read/execute for others. What command would the administrator use？（） chmod -R 775 /stuff。 chmod -h 002 /stuff。 chmod -R 577 /stuff。 chmod ug+rwx，o+rx /stuff。
分析的根本目的在于促进学生的健康发展，有利于学生（）。
A customer has one mainframe and ten open system servers in their current environment. They plan to add the servers to an IBM DS8700 system with four array sites.
How many extent pools should be created to provide the best resource utilization of the DS8700（）
