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单选题
What is the purpose of the limit switch on gravity davits?（）
A
To cut off the power when the davits hit the track safety stops
B
To stop the davits from going too fast
C
To cut off the power when the davits are about 12 inches or more from the track safety stops
D
None of the above
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更多 “单选题What is the purpose of the limit switch on gravity davits?（）A To cut off the power when the davits hit the track safety stopsB To stop the davits from going too fastC To cut off the power when the davits are about 12 inches or more from the track safety stopsD None of the above” 相关考题
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You need to perform. some initial configuration tasks on a new Ezonexam switch. What is the purpose of assigning an IP address to a switch?A．To provide local hosts with a default gateway addressB．To allow remote management of the switch.C．To allow the switch to respond to ARP requests between two hostsD．To ensure that hosts on the same LAN can communicate with each other.E．None of the above
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What is the purpose of the cisco Vlan Trunking protocol?()
A. to provide a mechanism to dynamically assign vlan membership to switch portsB. to allow traffic to be carried from multiple vlans over a single link between switchesC. to allow native vlan information to be carried over a trunk linkD. to provide a mechanism to manually assign vlan membership to switch portsE. to allow for managing the additions,deletions,and changes of vlans between switchs
考题
What is the purpose of the limit switch on gravity davits?A.To cut off the power when the davits hit the track safety stopsB.To stop the davits from going too fastC.To cut off the power when the davits are about 12 inches or more from the track safety stopsD.None of the above
考题
What could be a result of insufficient lubrication of lifeboat winches and davits ________．A.Moisture accumulation in winch motor damaging the electrical wiringB.Freezing of gears in cold weatherC.Corroding of sheaves on the davits so they will not rotateD.All of the above
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The main purpose of the Customs supervision and control is to （）China’s economic， trade，scientific， technological and cultural exchanges with other countries。A、superviseB、controlC、promoteD、limit
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Why would a network administrator configure port security on a switch?（）A、to prevent unauthorized Telnet access to a switch portB、to limit the number of Layer 2 broadcasts on a particular switch portC、to prevent unauthorized hosts from accessing the LAND、to protect the IP and MAC address of the switch and associated portsE、to block unauthorized access to the switch management interfaces over common TCP ports
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In the context of configuring dial-on-demand routing using ISDN, what is the purpose of the dialer-list command?（）A、to identify valid numbers for incoming callsB、to define the type of ISDN switch at the central officeC、to specify the list of outgoing phone numbers used by the routerD、to associate a dial configuration with a physical interfaceE、to define interesting traffic that will enable the link
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On a Cisco Nexus 7000 Series Switch， what is the purpose of this command？（） switch# config terminal switch（config）# mac address-table learning-mode conversational vlan 1-10 switch（config）# A、 Enable conversational learning on FabricPath vlans 1-10 for F-Series moduleB、 Enable FabricPath protocol on VLANs 1–10C、 No need for this command as conversational learning is enabled by default for all VLANs.D、 Enable conversational learning on Classical Ethernet VLAN for F-Series module
考题
What is the purpose of assigning an IP address to a switch?（）A、Provides local hosts with a default gateway addressB、Allows remote management of the switch.C、Allows the switch to respond to ARP requests between two hostsD、Ensures that hosts on the same LAN can communicate with each other.
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What is the purpose of the cisco Vlan Trunking protocol?（）A、to provide a mechanism to dynamically assign vlan membership to switch portsB、to allow traffic to be carried from multiple vlans over a single link between switchesC、to allow native vlan information to be carried over a trunk linkD、to provide a mechanism to manually assign vlan membership to switch portsE、to allow for managing the additions,deletions,and changes of vlans between switchs
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Which of the following is the MOST accurate description of a L2/L3 switch?（）A、Performs switching and routing dutiesB、A router that directly connects to a switchC、A multi-purpose switch fabric used in full mesh environmentsD、A switch that directly connects to a router
考题
单选题What could be a result of insufficient lubrication of lifeboat winches and davits?（）A
Moisture accumulation in winch motor damaging the electrical wiringB
Freezing of gears in cold weatherC
Corroding of sheaves on the davits so they will not rotateD
All of the above
考题
单选题The maximum speed of lowering for a lifeboat on gravity davits is controlled by the（）.A
limit switchesB
emergency disconnect switchC
governor brakeD
position of the counterweight on the brake handle
考题
单选题When hoisting a boat on gravity type davits using an electric motor driven winch，the davit arms should be brought up（）.A
to their final position with the winch operating at slow speedB
to the bar stop，and then hand cranked to their final positionC
until just before they make contact with the limit switch，and then hand cranked to their final positionD
to the embarkation deck，and then hand cranked to their final position
考题
单选题Limit switches on gravity davits should be tested by（）.A
the engineers，from a panel in the engine roomB
shutting off the current to the winchC
pushing the switch lever arm while the winch is runningD
All of the above
考题
单选题Why would a network administrator configure port security on a switch（）。A
to prevent unauthorized Telnet access to a switch portB
to limit the number of Layer 2 broadcasts on a particular switch portC
to prevent unauthorized hosts from accessing the LAND
to protect the IP and MAC address of the switch and associated portsE
to block unauthorized access to the switch management interfaces over common TCP ports
考题
单选题On open lifeboats，the purpose of the wire stretched between the davit heads is to（）.A
keep the movement of the davits at the same speedB
keep the davits from slipping when they are in the stowed positionC
prevent vibration during lowering of the boatD
support the manropes
考题
单选题Wlse uses snmp communication with an ethernet switch for what purpose？（）A
shut down rogue access pointsB
configure access pointsC
discover access pointsD
inventory access points
考题
单选题What is the purpose of the cisco Vlan Trunking protocol?（）A
to provide a mechanism to dynamically assign vlan membership to switch portsB
to allow traffic to be carried from multiple vlans over a single link between switchesC
to allow native vlan information to be carried over a trunk linkD
to provide a mechanism to manually assign vlan membership to switch portsE
to allow for managing the additions,deletions,and changes of vlans between switchs
考题
单选题Which of the following statements describes the relationship between viscosity and specific gravity?（）A
Liquids with different viscosities will always have the same specific gravityB
Liquids with different viscosities will never have the same specific gravityC
Viscosity and specific gravity are directly proportionalD
Viscosity and specific gravity are not related in that one does not define or limit the other
考题
单选题What is the purpose of Dual Ring Interconnect with D C for SDH rings？（）A
Protects signals when a ring switch failsB
Protects signals when multiple span switches failC
Protects pre-emptible traffic from being dropped when a ring switch occursD
Protects signals against any combination of link failure in each ring
考题
单选题Which sequence is correct when launching a lifeboat stowed in gravity davits?（）A
Release gripes，turn on emergency disconnect switch，release frapping linesB
Release tricing pennants，turn on emergency disconnect switch，release frapping linesC
Operate limit switches，release gripes，lift brakeD
Release gripes，lift brake，release tricing pennants
考题
单选题Limit switches are used on which davits?（）A
Sheath-screw davitsB
Gravity davitsC
Radial davitsD
Quadrantal davits
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