Explain why is it the answer to each question

QUESTION 3 A network administrator installs a new web server and notices that the server was configured with one quad-port NIC. In order to properly provision the hardware resources, which of the following describes how the NIC should be configured? Why? A. Assign at least one IP address to each port. B. Assign multiple IP addresses to one port. C. Assign one IP address to the quad-port NIC. D. Assign a single IP-address to all four ports. QUESTION 4 Users report that an application is unable to connect to a server on the same network segment. Which of the following is the MOST likely reason? Why? A. The external firewall is preventing access to the server. B. The DMZ is incorrectly configured. C. The syslog server detects malware on the server. D. The application is using a port that is closed on the server QUESTION 5 A mission critical server has faulted with a dead 66 MHz 3.3V PCI-X network interface card. The system administrator has been directed to get the server functional as soon as possible, even if it is. connected with less bandwidth. There are no onsite spare cards available and the vendor does not expect to have the parts for at least a week. Which of the following immediately available NICs could be substituted instead? Explain! A. 33 MHz 3.3V PCI B. 66 MHz 5V PCI C. 266 MHzx 3.3V PCI-X D. 533 MHz 5V PCI-X