单选题（）of the following messages is allowed to be transmitted on the radiotelephone without the authority of the Master.AUrgency signalBSafety signalCDistress signalDNone of the above
单选题
（）of the following messages is allowed to be transmitted on the radiotelephone without the authority of the Master.
A
Urgency signal
B
Safety signal
C
Distress signal
D
None of the above
参考解析
解析：
暂无解析
相关考题：
The receiver filters messages based on all but the following:A LanguageB DistanceC CultureD KnowledgeE Authority/Reputation
You are developing a Windows Communication Foundation (WCF) service. You establish that the largest size of valid messages is 8,000 bytes. You notice that many malformed messages are being transmitted.Detailed information about whether each message is malformed must be logged.You need to ensure that this information is saved in XML format so that it can be easily analyzed.What should you add to the service configuration file?（）A.B.C.D.
Which of the following security threats are MOST likely prevented through user training?() A. Network IntrusionB. Adware PopupsC. Social EngineeringD. Spam Messages
Which of the following is used by RADIUS to encrypt messages between the server and the client?() A. Public keyB. CSU/DSUC. Private keyD. Shared secret
Which of the following OSPF messages contains entire complete LSAs used during the database exchange process?() A. LSRB. LSAckC. LSUD. DDE. Hello
Look at the following exhibit. Which of the following correctly states the routes to be redistributed into OSPF? () A. The network 10.0.10.0/24 will be allowed and assigned a metric of 200B. All networks except 10.0.0.0/8 will be allowed and assigned a metric of 200C. The network 172.16.0.0/16 will be allowed and assigned a metric of 200D. The network 192.168.1.0 will be allowed and assigned a metric of 100
Which of the following accurately represents the functionality of a lightweight access point configured to operate in sniffer AP mode？（）A、client traffic allowed， data captured on all channelsB、client traffic allowed， data captured on a single channelC、no client traffic allowed， data captured on a single channelD、no client traffic allowed， data captured on all channels
Which of the following ports should be allowed through a firewall for Telnet to function？（）A、23B、25C、50D、110
Which of the following security threats are MOST likely prevented through user training?（）A、Network IntrusionB、Adware PopupsC、Social EngineeringD、Spam Messages
A technician cannot connect using Remote Desktop. Which of the following ports needs to be allowed in the firewall？ （）A、23B、443C、8080D、3389
All of the following classes of errors are logged in the error report EXCEPT（）.A、 Messages B、 Software C、 Hardware D、 Unknown
The following entry has been added to the syslog.conf file: *.emerg;mail,daemon.crit @ sysadmin Which of the following will result from this entry?（）A、 All messages at the emerg priority level and below from all facilities and messages at the crit priority level and below from the mail and daemon facilities are sent to the TTY of the user sysadmin. B、 All messages at the emerg priority level and above from all facilities, all messages at any priority level from the mail facility, and all messages at the crit priority level and above from the daemon facilities are sent to the remote host sysadmin. C、 All messages at the emerg priority level and above from all facilities and messages at the crit priority level and above from the mail and daemon facilities are sent to the remote host sysadmin. D、 All messages at the emerg priority level and above from all facilities except for the mail facility and messages at the crit priority level and above from the daemon facility are sent to the TTY of the user sysadmin.
Which of the following tools is used to view historical information about tasks, database changes, messages, and notifications?（）A、JournalB、Task CenterC、Control CenterD、Activity Monitor
单选题The distress message of a ship should include considerable information which might facilitate the rescue. This information should（）.AALWAYS be included in the initial distress messageBbe sent to a Coast Guard station FIRSTCbe transmitted as a series of short messages，if time allowsDinclude the vessel's draft
单选题Which statement about transmitting distress messages by radiotelephone is INCORRECT?（）ADistress messages should first be transmitted on 2182 kHzBIt is advisable to follow a distress message on 2182 kHz by two dashes of 10 to 15 seconds durationCIf no answer is received on the designated distress frequencies，repeat the distress call on any frequency availableDChannel 16 (156.8 MHz) may be used for distress messages
单选题Which statement is TRUE concerning radiotelephones on board towing vessels?（）AThere cannot be a radiotelephone located anywhere except in the wheelhouseBThe officer in charge of the wheelhouse is considered to have the radiotelephone watchCOnly distress messages may be transmitted over channel 13DOnly the Master of the vessel is allowed to speak over the radiotelephone
单选题The following entry has been added to the syslog.conf file: *.emerg;mail,daemon.crit @ sysadmin Which of the following will result from this entry?（）A All messages at the emerg priority level and below from all facilities and messages at the crit priority level and below from the mail and daemon facilities are sent to the TTY of the user sysadmin. B All messages at the emerg priority level and above from all facilities, all messages at any priority level from the mail facility, and all messages at the crit priority level and above from the daemon facilities are sent to the remote host sysadmin. C All messages at the emerg priority level and above from all facilities and messages at the crit priority level and above from the mail and daemon facilities are sent to the remote host sysadmin. D All messages at the emerg priority level and above from all facilities except for the mail facility and messages at the crit priority level and above from the daemon facility are sent to the TTY of the user sysadmin.
单选题Which of the following ports should be allowed through a firewall for Telnet to function？（）A23B25C50D110
单选题Some users report they cannot receive messages from some external senders.You suspect that there is some anti-spam activity blocking those messages.You need to identify what is blocking the messages.You will activate and review the logs of one of the following：（）AProtocol loggingBConnectivity logsCMessage trackingDPipeline tracing
单选题Which of the following accurately represents the functionality of a lightweight access point configured to operate in sniffer AP mode？（）Aclient traffic allowed， data captured on all channelsBclient traffic allowed， data captured on a single channelCno client traffic allowed， data captured on a single channelDno client traffic allowed， data captured on all channels
单选题The distress message of a ship should include considerable information which might facilitate the rescue. This information should（）.AALWAYS be included in the initial distress messageBbe sent to a MSA station FIRSTCbe transmitted as a series of short messages，if time allowsDinclude the vessel's draft
单选题When the tilting box of a variable stroke axial-piston pump is perpendicular to the pump shaft, which of the following conditions will exist?（）AThe pistons reciprocateBThe ‘B’ end cylinder barrel rotatesCThere is no fluid flowDPower is transmitted hydraulically
多选题A Windows Communication Foundation (WCF) solution uses the following contract: [ServiceContract(SessionMode=SessionMode.Allowed)]public interface IMyService{ [OperationContract(IsTerminating=false)] void Initialize（ ）; [OperationContract(IsInitiating=false)] void DoSomething（ ）; [OperationContract(IsTerminating=true)] void Terminate（ ）;} You need to change this interface so that: lnitialize is allowed to be called at any time before Terminate is called. DoSomething is allowed to be called only after Initialize is called, and not allowed to be called after Terminate is called. Terminate will be allowed to be called only after Initalize is called.Which two actions should you perform? (Each correct answer presents part of the sdution. Choose two)（）。AChange the ServiceContract attribute of the IMyService interface to the following. [ServiceContract(SessionMode=SessionMode.Required)]BChange the ServiceContract attrbute of the IMyService interface to the following [ServiceContract(SessionMode=SessionMode.Allowed)]CChange the OperationContract attribute of the Initialize operation to the following. [OperationContract(IsInitiating = true, IsTerminating = false)]DChange the OperationContract attribute of the Terminate operation to the following [OperationContract(IsInitiating = false, IsTerminating = true)]
单选题Which of the following statements about transmitting distress messages by radiotelephone is INCORRECT?（）AIf no answer is received on the designated distress frequencies，repeat the distress call on any frequency availableBChannel 16 (156.8) may be used for distress messagesCIt is advisable to follow a distress message on 2182 kHz by two dashes of 10 to 15 seconds durationDDistress messages should first be transmitted on 2182 kHz
单选题Which of the following routing components is used for sending messages to other SMTP hosts？（）ARouting groupBSend connectorCDNSDDelivery agent
单选题Messages concerning weather conditions transmitted by radiotelephone are preceded by（）.AMAYDAYBPAN-PANCSECURITEDSOS