[单项选择]Which of the listed types steam traps operates on the principle that hot water flashes to steam when its vapor pressure is rapidly reduced?（）
A. Ball float
B. Thermostatic
C. Bimetallic
D. Impulse

[单项选择]Which types of portable fire extinguishers are designed for use on electrical fires?（）
A. Dry chemical and carbon dioxide
B. Foam (stored pressure) and soda-acid
C. Carbon dioxide and foam (stored pressure)
D. Dry chemical and soda-acid

[单项选择]Which types of portable extinguisher should you watch for the reflash of the fire?（）
A. foam and water
B. CO₂ and dry chemical
C. dry chemical and water
D. foam and CO₂

[单项选择]On which types of network will OSPF elect a backup designated router（）。
A. point-to-point and multiaccess
B. point-to-multipoint and multiaccess
C. point-to-point and point-to-multipoint
D. nonbroadcast and broadcast multipoint
E. nonbroadcast and broadcast multiaccess

[多项选择] Into which two types of areas would an area border router (ABR) inject a default route?（）
A. stub
B. the autonomous system of an exte rior gateway protocol (EGP)
C. NSSA
D. totally stubby
E. the autonomous system of a different interior gateway protocol (IGP)
F. area 0

[单项选择]Which of the following types of hydraulic pumps would be used in a steering system?（）
A. Lobe
B. Screw
C. Radial piston
D. Volute

[多项选择]Which three Layer 2 encapsulation types would be used on a WAN rather than a LAN? （）
A. HDLC
B. Ethernet
C. Token Ring
D. PPP
E. FDDI
F. Frame Relay

[单项选择]Which of the listed types of starting systems is often used on large, low-speed, direct reversing, main propulsion diesel engines?（）
A. Electric
B. Hydraulic
C. Air
D. All of the above

[单项选择]Which of the following types of motors is often designed for use in correcting power factor?（）
A. Polyphase
B. Wound-rotor
C. Induction
D. Synchronous

[多项选择]Which of the following are types of flow control (Choose three.)（）。
A. buffering
B. cut-through
C. windowing
D. congestion avoidance
E. load balancing

[单项选择]Which of the listed bearing types is an example of a solid bearing?（）
A. Piston wrist pin bushing
B. turbine bearing
C. Spring bearing
D. Diesel engine main bearing

[单项选择]Which of the listed types of files is the best for producing a fine finish on metal?（）
A. Mill
B. Float
C. Warding
D. Second cut

[单项选择]Two types of anchor shackles which are currently available are（）.
A. U-Type and posilok shackles
B. C-Type and wedge shackles
C. D-Type and bow shackles
D. wedge and kenter shackles

[单项选择]Structural traps are traps（）are formed because of a deformation in the rock layer （）contains the hydrocarbons.
A. that, that
B. what,what
C. what,that
D. that,what

[单项选择]Which of the devices listed is common to all types of pumps?（）
A. A power end and fluid end
B. A propeller and educator
C. A volute and impeller
D. A turbine and piston

[单项选择]Which types of prefixes will a router running BGP most likely advertise to an IBGP peer， assuming it is not configured as a route reflector？（）
A. prefixes received from any other BGP peer and prefixes locally originated via networkstatements or redistributed
B. all prefixes in its routing table
C. prefixes received from EBGP peers and prefixes locally originated via network statements or redistributed
D. prefixes received from EBGP peers and prefixes received from route reflectors
E. prefixes received from other IBGP peers， prefixes received from EBGP peers，and prefixes redistributed to BGP
F. prefixes received from other IBGP peers and prefixes received from route reflectors