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Which of the following options are valid choices for cluster communication security？（）
A . rsh and ssh
B . Standard and VPN
C . rhost and .shosts
D . Classic and Enhanced
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In your Cisco EIGRP network，you notice that the neighbor relationship between two of your routers was recently restarted. Which two of these choices could have made this occur？（）
A . An update packet with init flag set from a known， already established neighbor relationship was received by one of the routers.
B . The ARP cache was cleared.
C . The counters were cleared.
D . The IP EIGRP neighbor relationship was cleared manually.
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Which two are equivalent？ （）
A . 16>4
B . 16/2
C . 16*4
D . 16>>2
E . 16/2^2
F . 16>>>2
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Regarding DHCP (dynamic host configuration protocol), which two of the following choices below are true?（）
A . The DHCP Discover message uses FF-FF-FF-FF-FF as the Layer 2 destination address.
B . The DHCP Discover message uses UDP as the transport layer protocol.
C . The DHCP Discover message uses a special Layer 2 multicast address as the destination address.
D . The DHCP Discover message uses TCP as the transport layer protocol.
E . The DHCP Discover message does not use a Layer 2 destination address.
F . The DHCP Discover message does not require a transport layer protocol.
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Which two are equivalent？（）
A . 3/2
B . 3<2
C . 3*4
D . 3<<2
E . 3*2^2
F . 3<<<2
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Which two are equivalent？（）
A . 3/2
B . 3<2
C . 3*4
D . 3<<2
E . 3*2^2
F . 3<<<2
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In your Cisco EIGRP network， you notice that the neighbor relationship between two of your routers was recently restarted. Which two of these choices could have made this occur？（）
A . An update packet with init flag set from a known， already established neighbor relationship was received by one of the routers.
B . The ARP cache was cleared.
C . The counters were cleared.
D . The IP EIGRP neighbor relationship was cleared manually.
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Which two statements are true？（）
A . It is possible for more than two threads to deadlock at once.
B . The JVM implementation guarantees that multiple threads cannot enter into a deadlocked state.
C . Deadlocked threads release once their sleep（） method’s sleep duration has expired.
D . Deadlocking can occur only when the wait（）， notify（）， and notifyAll（） methods are used incorrectly.
E . It is possible for a single-threaded application to deadlock if synchronized blocks are used incorrectly.
F . If a piece of code is capable of deadlocking， you cannot eliminate the possibility ofdeadlocking by insertinginvocations of Thread.yield（）.
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n your Cisco EIGRP network， you notice that the neighbor relationship between two of your routers was recently restarted. Which two of these choices could have made this occur？（）
A . An update packet with init flag set from a known， already established neighbor relationship was received by one of the routers.
B . The ARP cache was cleared.
C . The counters were cleared.
D . The IP EIGRP neighbor relationship was cleared manually.
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Regarding PAR (Positive Acknowledgement and Re-transmission), which of the answer choices below are correct?（）
A . The source device will only retransmit lost packets on the request of the destination device.
B . The source device starts a timer when it sends a segment and retransmits if an acknowledgment is not received before the timer expires.
C . The destination device acknowledges receipt of a segment by sending a packet with a new sequence number and the ACK bit sent.
D . The destination device acknowledges receipt of a segment by sending a packet that indicates the next sequence number it expects.
E . If the destination device does not receive a segment, all segments are retransmitted.
F . The source device keeps a record of all segments sent and expects and acknowledgment of each.
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Which two multicast protocol statements are true？ （Choose two.） （）
A . Dense mode multicast requires explicit join messages from their members.
B . Dense mode multicast uses a push model to flood traffic throughout the network and then prunes the unwanted traffic.
C . Sparse mode multicast uses a pull model to send multicast traffic to where it is requested.
D . Sparse mode uses reverse path forwarding （RPF） to prune off redundant flows.
E . The primary use of sparse mode multicast is for test labs and router performance testing.
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Which two are true？（）
A . An encapsulated， public class promotes re-use.
B . Classes that share the same interface are always tightly encapsulated.
C . An encapsulated class allows subclasses to overload methods， but does NOT allow overriding methods.
D . An encapsulated class allows a programmer to change an implementation without affecting outside code.
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Which two statemets are true？（）
A . DPT/RPR uses a bi-directional ring consisting of two symmetric counter rotating fibre rings.
B . DPT/RPR is defined in the IEEE 802.17 standard and it uses Token Bucket system to avoid collisions on the fiber.
C . In DPT/RPR rings， data packets can be sent in one direction （downstream） and the corresponding control packets in the opposite direction （upstream），thus using both fibres concurrently to maximise bandwidth.
D . DPT/RPR can be deployed in the Core of the SP networks where point-to-point POS links are used tomake best use of the Bandwidth.
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ISL is being configured on a Company switch. Which of the following choices are true regarding the ISL protocol？ （）
A . It can be used between Cisco and non-Cisco switch devices.
B . It calculates a new CRC field on top of the existing CRC field.
C . It adds 4 bytes of protocol-specific information to the original Ethernet frame.
D . It adds 30 bytes of protocol-specific information to the original Ethernet frame.
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Which two statements are true?（）
A . It is possible for more than two threads to deadlock at once.
B . The JVM implementation guarantees that multiple threads cannot enter into a deadlocked state.
C . Deadlocked threads release once their sleep() method's sleep duration has expired.
D . Deadlocking can occur only when the wait(), notify(), and notifyAll() methods are used incorrectly.
E . It is possible for a single-threaded application to deadlock if synchronized blocks are used incorrectly.
F . If a piece of code is capable of deadlocking, you cannot eliminate the possibility of deadlocking by inserting invocations of Thread.yield().
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Which three choices are BGP Extended communities used in MPLS-VPN deployment？（）
A . Site Of Origin SOO
B . Route-Target
C . Route-Distinguisher
D . Domain Identifier BGP extended commumity
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Which two are true？（）
A . A finalizer may NOT be invoked explicitly.
B . The finalize method declared in class Object takes no action.
C . super.finalize（）is called implicitly by any over riding finalize method.
D . The finalize method for a given objec twill be called no more than once by the garbage collector.
E . The order in which finalize will be called on two objects is based on the order in which the two objects became finalizable.
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Which the two choices are equivalent？（）
A . 3 / 2
B . 3 < 2
C . 3 * 4
D . 3 << 2
E . 3 * 22
F . 3 <<<2
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Which of the following answer choices are correct characteristics of named access list?（）
A . You can delete individual statements in a named access list
B . Named access lists require a numbered range from 1000 to 1099.
C . Named access lists must be specified as standard or extended.
D . You can use the ip access-list command to create named access lists.
E . You cannot delete individual statements in a named access list.
F . You can use the ip name-group command to apply named access lists.
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Which two statements are correct? Choose two answers.
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Which of the following choice are incorrect?
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According to the professor, what two factors are associated with charismatic authority？ Click on 2 answer choices.
A．Sacred customs
B．An attractive leader
C．A social cause
D．Legal elections
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Directions: In this part, there are two statements related to the video you have just watched. To each statement there are four choices. Choose the best one（） to each question. Which of the following
A．In American culture friendship means a strong life-long bond between two peopl
E．Friendships develop slowly, since they are built to last.
B．I n C hina there are few limits on what you can ask or expect of a frien
D．You can feel free to tell your friend what he or she can or should do to help you.
C．In China,friendships are based on common interests. When the shared activity ends, the friendship may fade
D．Americans expect their friends to be independent , so they do not feel comfortable in a relationship in which one person is giving more and the other person is dependent on what is being given.
此题为多项选择题。
