根据所给图表、文字资料回答101~105题。表中2005年国外游客到达人数高于出国旅游人数的国家有()。

A. MD5 authentication is supported by the Junos OS

B. Server mode is not supported by the Junos OS

C. The Junos OS can provide a primary time reference

D. The Junos OS does not support the use of a boot server

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.

A.Switches take less time to process frames than hubs take.

B.Switches do not forward broadcasts.

C.Hubs can filter frames.

D.Using hubs can increase the amount of bandwidth available to hosts.

E.Switches increase the number of collision domains in the network.

Which of the following is false regarding a network and a distributed system？

A．They both need to move files around.

B．They have little in common.

C．They overlap each other a lot.

D．They have different operating systems.

A.MD5 authentication is supported.

B.A client always synchronizes to a server even when the difference between the server clock and the local clock differs by a large amount.

C.JUNOS software can provide a primary time reference.

D.The boot-server configuration allows a router to synchronize its clock when it boots up, regardless of the offset between the NTP clock source and its internal clock.

E.It is useful to correlate timestamps on log files and other events for troubleshooting and forensics.

A. Once saved, a rescue configuration is loaded using the rollback 0 command.

B. The rescue configuration must contain the minimal elements necessary to restore network connectivity.

C. A minimal rescue configuration is defined by default.

D. A rescue configuration must include a root password.

Which of the statements regarding benefit-cost analysis in the Special window are true？

A . 1 and 2

B . 2 and 3

C . 1 and 3

D . 1, 2 and 3

E . None of the above.

Which of the following statements is TRUE about Robert Browning？

A．He believes that longer life is no good thing.

B．He believes that true life lies in how one makes of it.

C．He is identical with Lewis Thomas, regarding the life issue.

D．He is opposite to A.E. Housman, regarding the death issue.

A. It corresponds to a Class A address with 13 bits borrowed.

B. It corresponds to a Class B address with 4 bits borrowed.

C. The network address of the last subnet will have 248 in the 3rd octet.

D. The first 21 bits make the host portion of the address.

E. This subnet mask allows for 16 total subnets to be created.

F. The subnetwork numbers will be in multiples of 8.

n your database. You create an access control list (ACL) using the DBMS_NETWORK_ACL_ADMIN package. Which statement is true regarding the ACL created？（）

A. It is a list of remote database links stored in the XML file that are available to the users of the database.

B.It is a list of users and network privileges stored in the XML file according to which a group of users can connect to one or more hosts.

C. It is a list of users and network privileges stored in the data dictionary according to which a group of users can connect to one or more hosts.

D. It is the list of the host names or the IP addresses stored in the data dictionary that can connect to your database through PL/SQL network utility packages such as UTL_TCP.