A technician needs to assign a default subnet mask for a class B network to a network device that was just installed. Which of the following would the technician use?（）

单项选择题Which of the following describes the 25 or 9 pin connector with male pins on the back of a laptop computer?（）

A. Parallel port
B. Serial port
C. IEEE 1394 port
D. USB port

单项选择题A technician notices that there is a second partition on the primary hard drive. This partitionis notassigned a drive letter and is not accessible from Windows. Which of the following is the MOST likely explanation for this extra partition?（）

A. Space reserved by the drive manufacturer for firmware.
B. Space set aside by Windows for use by the virtual memory swap file.
C. A potentially dangerous virus has been downloaded onto the system.
D. A recovery partition put there by the manufacturer.

多项选择题Which of the following commands verifies connectivity between two hosts?（）

A. chkntfs
B. dxdiag
C. tracert
D. ipconfig
E. ping

单项选择题Which of the following is needed to perform an ASR restore in Windows XP?（）

A. Operating system CD
B. Recovery console
C. Vendor recovery CD
D. ERD disk

单项选择题Which of the following BEST describes the function of a DNS server?（）

A. Secures network traffic through shared key encryption.
B. Provides resolution of host names to IP addresses.
C. Provides security for a network through the use of ACLs.
D. Dynamically assigns IP addresses for easy client configuration.