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单选题
Which statement is true concerning 6to4 tunneling?（）
A
The edge routers can use any locally configured IPv6 address.
B
Hosts and routers inside a 6to4 site will need a special code.
C
An edge router must use IPv6 address of 2002::/16 in its prefix.
D
IPv4 traffic is encapsulated with an IPv6 header.
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更多 “单选题Which statement is true concerning 6to4 tunneling?（）A The edge routers can use any locally configured IPv6 address.B Hosts and routers inside a 6to4 site will need a special code.C An edge router must use IPv6 address of 2002::/16 in its prefix.D IPv4 traffic is encapsulated with an IPv6 header.” 相关考题
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Which name describes an IPV6 host－enable tunneling technique that uses IPV4 UDP,does not require dedicated gateway tunnels,and can pass through existing IPV4 NAT gateways?()
A.dual stackB.dynamicC.TeredoD.Manual 6to4
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Which statement is TRUE concerning combustible gas indicators ________．A.One sample of air is adequate to test a tankB.They do not work properly where there is a lack of oxygenC.They will detect a lack of oxygenD.They are calibrated to read the percentage chance of explosion
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Which statements concerning the switch construct are true？（） A、All switch statements must have a default label.B、There must be exactly one label for each code segment in a switch statement.C、The keyword continue can never occur within the body of a switch statement.D、No case label may follow a default label within a single switch statement.E、A character literal can be used as a value for a case label.
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A company is using 6to4 tunneling within their IPv6 network. Which two statements about this kindof tunneling are accurate？（）A、6to4 is a manual tunnel methodB、Prepending a reserved IPv6 code to the hexadecimal representation of 192.168.0.1 facilitates6to4 tunnelingC、Each 6to4 site receives a /48 prefix in a 6to4 tunnelD、2002：：/48 is the address range specifically assigned to 6to4E、Prepending 0x2002 with the IPv4 address creates an IPv6 address that is used in 6to4tunneling
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Which statement is true concerning 6to4 tunneling?（）A、The edge routers can use any locally configured IPv6 address.B、Hosts and routers inside a 6to4 site will need a special code.C、An edge router must use IPv6 address of 2002::/16 in its prefix.D、IPv4 traffic is encapsulated with an IPv6 header.
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单选题Which statement is TRUE concerning a towing vessel which，due to the nature of her work，is unable to keep out of the way of another vessel?（）A
By day，she shall carry a black cylinder shapeB
By day，she shall carry two black balls in a vertical lineC
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单选题Which statement(s) is/are TRUE concerning crane cargo operations? （）A
Do not exceed rated load capacity of crane and container spreader or slingsB
During any cargo handling operation，the safety of personnel is paramountC
Cargo handlers must be outfitted with adequate protection from personal injuryD
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单选题Two barges are being pushed ahead by a tugboat.Which statement is TRUE concerning lights on the barges（）.A
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考题
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考题
多选题A company is using 6to4 tunneling within their IPv6 network. Which two statements about this kindof tunneling are accurate？（）A6to4 is a manual tunnel methodBPrepending a reserved IPv6 code to the hexadecimal representation of 192.168.0.1 facilitates6to4 tunnelingCEach 6to4 site receives a /48 prefix in a 6to4 tunnelD2002：：/48 is the address range specifically assigned to 6to4EPrepending 0x2002 with the IPv4 address creates an IPv6 address that is used in 6to4tunneling
考题
单选题If the situation arose where it became necessary to tow a disabled vessel，which statement is TRUE concerning the towing line?（）.A
The towing line between the two vessels should be clear of the waterB
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考题
单选题Which name describes an IPV6 host-enable tunneling technique that uses IPV4 UDP,does not require dedicated gateway tunnels,and can pass through existing IPV4 NAT gateways?（）A
dual stackB
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单选题Which statement concerning teams is true?A
Nowadays teamwork is a popular concept.B
All the companies put great emphasis on teams.C
A good team involves close supervision of the team leader.D
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单选题Your tanker is designed to carry anhydrous ammonia in bulk.The keel was laid in 1980.Which statement concerning the carriage of this cargo is TRUE（）.A
A flammable gas detection system must be installed in each cargo pump roomB
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Carriage of this cargo is authorized by issuance of an IMO CertificateD
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单选题Which statements concerning the switch construct are true？（）A
All switch statements must have a default label.B
There must be exactly one label for each code segment in a switch statement.C
The keyword continue can never occur within the body of a switch statement.D
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A character literal can be used as a value for a case label.
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单选题Which statement is TRUE concerning lifeboat gripes?（）A
They must be released by freeing a safety shackleB
They should not be released until the boat is in lowering positionC
They may be adjusted by a turnbuckleD
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单选题Which statement is TRUE concerning gasoline vapors on board a vessel（）.A
They are heavier than air and will settle in the lowest part of the vesselB
They are lighter than air and will settle in the highest part of the vesselC
They should be vented into the engine to improve combustionD
They should be vented into the wheelhouse
考题
单选题Which statement concerning Montauk Point Light is TRUE（）.A
The light comes on at sunsetB
There is an emergency light if the main light is extinguishedC
The height of the light is 24 feetD
The tower is painted with black and white stripes
考题
单选题Which statement is TRUE concerning the tandem working arrangement of pedestal cranes when completing a quad lift? （）A
The discharge is slow due to the size of the cargo and all the cranes working togetherB
The cargo discharge can be accomplished with controlled pendulationC
The cargo discharge can be performed in port or at anchorD
The cranes enable the handling of heavy cargos without shoreside assistance
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单选题Which statement is TRUE concerning protection of double bottom tanks against excessive pressure? （）A
Each vent for the tank must be equal to the area of the tank filling lineB
The tanks must be protected by overflowsC
The total area of the vents or the overflow shall be at least equal to the area of the fill lineD
There must be twice as much vent area as the area of the fill line
考题
单选题Which statement is TRUE concerning spare charges for portable fire extinguishers on unmanned tank barges?（）.A
Spare charges shall be carried for at least 50 percent of each size and variety required on boardB
If the unit cannot be charged by the vessel's personnel，one spare unit shall be carried in lieu of spare chargesC
Spare charges shall be stowed in watertight containers on deckD
Regulations concerning spare charges do not apply to unmanned barges
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