Which statement is true regarding the Network Time Protocol

第1题：

第2题：

Which of the following statements regarding routed and routing protocols are true?（）

• A、A routed protocol is assigned to an interface and determines the method of packet deliver.
• B、A routing protocol determines the path of a packet through a network.
• C、A routed protocol determines the path of a packet through a network.
• D、A routing protocol operates at the transport layer of the OSI model.
• E、A routed protocol updates the routing table of a router.

第3题：

第4题：

Which statement is true regarding a session key in the Diffie-Hellman key-exchange process?（）

• A、A session key value is exchanged across the network.
• B、A session key never passes across the network.
• C、A session key is used as the key for asymmetric data encryption.
• D、A session key is used as the key for symmetric data encryption.

第5题：

A switch has been configured with two vlans and is connected to a router with a trunk for inter-vlan routing.OSPF has been configured on the router，as the routing protocol for the network.Which statement about thisnetwork is true？（）

• A、For the two vlans to communicate，a network statement for the trunk interface needs to be added to the  OSPF configuration.
• B、For the two vlans to communicate， a network statement for each subinterface needs to be  added  to the OSPF configuration.
• C、Direct inter-vlan communication does not require OSPF
• D、OSPF cannot be used if router-on-a-stick is configured on the router

第6题：

Part of the job as a network administrator is being able to make a distinction between routed protocols and routing protocols. Which of the following statements is true regarding them?（）

• A、A routing protocol is assigned to an interface and determines the method of packet delivery.
• B、A routed protocol is assigned to an interface and determines the method of packet delivery.
• C、A routing protocol determines the path of a packet through a network.
• D、A routed protocol determines the path of a packet through a network.
• E、A routing protocol operates at the transport layer of the OSI model.
• F、A routed protocol updates the routing table of a router.

第7题：

Which of the following is true regarding the effect of EIGRP queries on the network design？（）

• A、 EIGRP queries will be the most significant issue with respect to stability and convergence 
• B、 EIGRP queries are not a consideration as long as EIGRP has a feasible successor with a nexthop AD that is greater than the FD of the current successor route 
• C、 EIGRP queries will only increase the convergence time when there are no EIGRP stubsdesigned in the network

第8题：

第9题：

Which of the following is true regarding Label Distribution Protocol （LDP）？（）

• A、It is a label distribution protocol for MPLS
• B、It is a set of procedures and messages by which LSRs establish Label Switch Paths （LSPs） through a network
• C、Tag distribution Protocol （TDP） was the basis for LDP
• D、All of the above are true

第10题：

Which two statements are true regarding the use of NTP clock synchronization?（）

• A、The Junos OS supports client, server, and symmetric modes of NTP operation.
• B、Synchronized time on all network devices makes log messages more useful for troubleshooting.
• C、Authentication methods are not supported.
• D、The Junos OS must be used as the primary time reference.