CMS专题
单选题An email server has been installed； however， the staff reports that they are unable to receive email from external email addresses， but they can email each other. Which of the following is the MOST likely reason for this？（）AThe company firewall is blo
题目
The company firewall is blocking SMTP ports.
The DHCP server is misconfigured.
The DNS server is only resolving internal name spaces.
The email server should be configured to resolve names by IP addresses.
相似问题和答案
第1题：
An administrator has just installed a new NIC into the server. The system POSTs fine and the NIC is recognized by the OS, but it does not receive an IP address. Which of the following is the MOST likely cause of this?（）
A. The NIC is not on the HCL.
B. The driver is incorrect on the server.
C. The patch cable has not been seated properly.
D. The NIC is not seated properly.
第2题：
Certkiller .com has a server named Certkiller -SR05 that has numerous processors installed.You have been given the task of developing an application that displays certain clock speed statisticson all processors installed on Certkiller -SR05.You need to ensure that this requirement is fully satisfied.What should you do?（）
A.
B.
C.
D.
第3题：
— You are the manager of the marketing department in your company. A new assistant manager has recently been appointed and will start work soon.
— Write an email to all staff in the department:
— explaining the need for the appointment
— saying when the assistant manager will start work
— describing the experience the assistant manager has.
— Write 40 - 50 words.
From: Candace Woodward
To: All marketing staff
Subject: New assistant manager
To support our strategy of growing sales in our Asian and African markets, a new position of assistant manager has been created. Paul Fisher has been appointed, and will start on 1st September Paul has worked for several years in marketing toys, concentrating on the Far East.
第4题：
After a server has been installed into a rack, an administrator must ensure which of the following?（）
- A、Warm air flow is permitted through the front bezel
- B、The system is labeled so that it can be identified
- C、Verify the change control process can be implemented
- D、Determine the correct power requirements
正确答案:B
第5题：
The technician has suspicions that a browser has been hijacked. Which of the following should the technician look for in this situation?（）
- A、A new default gateway has been setup.
- B、A new Internet shortcut has been added.
- C、A new web browser has been installed and is now the default.
- D、A proxy server has been enabled.
正确答案:D
第6题：
A base operating system has just been installed, successfully rebooted, and the user is now logged in as root. The user wants the server software bundle installed, but has additional software that must be installed with the bundle. Which of the following procedures should be performed to complete the installation?（）
A.Add the software to /usr/sys/inst.images
B.Update the bundle file in /usr/sys/inst.images
C.Install the bundle filelists and run update all
D.Add the software to the bundle file in /usr/sys/inst.data/sys_bundles
第7题：
A new server was installed. Most clients are located in the same subnet as the server and can successfully access the server. Clients located on different subnets have been unable to access the server， but have no trouble accessing other servers on their subnet. Which of the following is the reason that these clients are unable to access the server？（）
- A、 DHCP has assigned the wrong addresses.
- B、 Incorrect default gateway on the server.
- C、 DNS entries were not created.
- D、 WINS server is not responding.
正确答案:B
第8题：
Aare
Bhave been
Cis
D has been
第9题：
An administrator is adding additional memory into a server that registers 1GB of memory in the OS and notices that the system has 2GB of memory physically installed； however， the server only shows 1GB of memory during POST. Which of the following is the MOST likely reason for this？（）
- A、 The OS does not support more than 1GB of memory.
- B、 The system memory has different manufacture dates.
- C、 Two of the memory sticks are defective.
- D、 The server is using memory interleaving.
正确答案:C
第10题：
An email server has been installed； however， the staff reports that they are unable to receive email from external email addresses， but they can email each other. Which of the following is the MOST likely reason for this？（）
- A、 The company firewall is blocking SMTP ports.
- B、 The DHCP server is misconfigured.
- C、 The DNS server is only resolving internal name spaces.
- D、 The email server should be configured to resolve names by IP addresses.
正确答案:A