[单项选择]Which of these statements best describes VPLS?（）
A. Neither broadcast nor multicast traffic is ever flooded in VPLS.
B. Multicast traffic is flooded but broadcast traffic is not flooded in VPLS.
C. VPLS emulates an Ethernet switch, with eachEMS being analogous to a VLAN.
D. Because U-PE devices act as IEEE 802.1 devices, the VPLS core must use STP.
E. When the provider experiences an outage, IP re-routing restores PW connectivity and MAC relearning is needed.

[单项选择]Which of the following statements describes the life efficial women it the U. S.
A. They do not have many choices but to be trapped in the sex industry.
B. They choose prostitution as their occupation of their own accord.
C. They are discriminated against for lack of education.
D. They are isolated from the mainstream black community.

[单项选择]Which of the following statements describes one of the functions of the ballast system?（）
A. To permit flooding of any fuel oil storage tank on any class of ship
B. To use it as a secondary service system
C. To store reserve feed or potable water for extended cruises
D. To stabilize the ship by flooding certain designed tanks with seawater

[单项选择]Which of the following statements describes the function of an expansion tank in a diesel engine cooling system?（）
A. Maintains a constant head on the system
B. Reduces the likelihood of air or steam pockets formation
C. Provides a low pressure point for the addition of makeup cooling water
D. All of the above

[单项选择]Which of the following statements describes the results of excessive microbiological growths within a fuel system?（）
A. all excessive amounts of growth will cause the main engines of the vessel to stall due to the inability to supply the proper quantities of fuel to satisfy the existing load
B. The deposits produced by these growths form blockages and flow restrictions ultimately leading to improper atomization of the fuel into the cylinders
C. Eventually the growth of these organisms will deplete the supply of food available to them, which in turn will cause their demise
D. If continual growth is permitted, a sweet odor similar to that associated with baking will be noticed when system components are opened for inspection

[单项选择]Which of the following statements best describes a laser
A. A device for stimulating atoms and molecules to emit light.
B. An atom in a high-energy state.
C. A technique for destroying atoms or molecules.
D. An instrument for measuring light waves.

[单项选择]Which of the following statements best describes the relationship between a logical volume and a journaled file system (JFS)?（）
A. Increasing the size of a logical volume also increases the size of the file system
B. Reducing the size of a logical volume requires reducing the size of the file system first
C. Increasing the size of a file system requires increasing the size of the logical volume first
D. Increasing the size of a file system also increases the size of the logical volume when necessary

[多项选择]Which two statements best describes the role of a router on a broadcast domain?（）
A. Routers facilitate communications within a broadcast domain.
B. Routers facilitate communications between broadcast domains.
C. Routers are used to break up broadcast domains into separate networks.
D. Routers are used to connect small broadcast domains and form larger more efficient broadcast domains

[单项选择]Which of the following describes the BEST course of action when a user continuously calls atechnician with computer issues instead of the helpdesk?（）
A. Put all other work orders on hold and assist the user with all their computer issues.
B. Have another technician take over support calls for this user.
C. Explain that the user needs to fill out a work order for the computer problems.
D. Ask the user to call another technician for more in-depth assistance.

[单项选择]Which best describes the main purpose of Service Update Management Assistant (SUMA)?（）
A. Schedules the install AIX APARs and updates
B. Automatically installs AIX APARs and updates via the HMC
C. Schedules and automates the download of AIX APARS and updates
D. Automatically queries existing machines and alerts when APARS and updates are available

[单项选择]Which best describes an inline view?（）
A. a schema object
B. a subquery that can contain an ORDER BY clause
C. another name for a view that contains group functions
D. a subquery that is part of the FROM clause of another query

[单项选择]Which of the following statements would best serve as an introduction to the passage
A. The assumption that the knowledge incorporated in technological developments must be derived from science ignores the many non-scientific decisions made by technologists.
B. Analytical thought is no longer a vital component in the success of technological development.
C. As knowledge of technology has increased, the tendency has been to lose sight of the important role played by scientific thought in making decisions about form, arrangement, and texture.
D. A technologist thinking about a machine, reasoning through the successive steps in a dynamic process, can actually turn the machine over mentally.

[单项选择]Which of the following statements can best describe the main theme of the passage
A. There is a great potential in the world telecom market.
B. The WTO pact has boosted a rapid development of telecom all over the world.
C. The WTO pact has opened up bigger telecom markets to competition.
D. Governments have realized the importance of telecommunication.