Which two states are the port states when RSTP has converged?（）

A . a class can be identified as a single application， multiple applications with similar service needs，or be based on the source or destination IP address B . a drawback of the DiffServ field in the MAC header to mark frames into behavior aggregates （BAs） C . DiffServ uses the DiffServ field in the MAC header to mark frames into behavior D . the DiffServ field occupies the same eight bits of the MAC header that were previously used for the ToS field E . the first six high-order bits of the DiffServ field are used to identify the Resource Reservation Protocol （RSVP） value F . the primary goal of DiffServ is scalability

A . Database must be running in archivelog mode. B . Automatic undo management must be enabled. C . Undo retention guarantee must be enabled. D . The tablespace on which the Flashback Data Archive is created must be managed with Automatic Segment Space Management (ASSM).

A .  WAR files must be located in the web application library directory. B .  WAR files must contain the web application deployment descriptor. C .  WAR files must be created by using archive tools to designed specifically for that purpose.  D .  The web container must serve the content of any META-INF directory located in a WAR file. E .  The web container must allow access to resources in JARs in the web application library directory

A .  it provides centralized request handling for incoming requests. B .  It forces resource authentication to be distributed across web components. C .  It reduces coupling between presentation-tier clients and underlying business services. D .  It can be added and removed unobtrusively， without requiring changes to existing  code. E .  It allows preprocessing and postprocessing on the incoming requests and outgoing  responses.

A . Upon bootup，a port transitions from blocking to forwarding because it assumes itself as root. B . Upon bootup，a port transitions from blocking to listening because it assumes itself as root. C . Upon bootup，a port transitions from listening to forwarding because it assumes itself as root. D . If a forwarding port receives no BPDUs by the max_age time limit， it will transition to listening. E . If a forwarding port receives an inferior BPDU， it will transition to listening. F . If a blocked port receives no BPDUs by the max_age time limit， it will transition to listening.

A . blocking B . learning C . discarding D . forwarding E . listening

A . show ip ospf B . show ip protocols C . show ip ospfneighbor D . show ip ospfinterface

A . The switchport belongs only to VLAN 2 B . Interface fa0/0 will be in both VLAN 1 (by default) and VLAN 2 C . The exhibit shows interface fa0/0 to be dynamically mapped to VLAN 2 D . A network host can be connected to this interface

A . menu B . functions C . data group D . responsibility E . functional grou

A . Learning B . Spanning C . Listening D . Forwarding E . Initializing F . Filtering G . Permitting

A . blocking B . learning C . disabled D . forwarding E . listening

A .  Blocking cipher andnon-blocking cipher B .  CBC cipher and EBC cipher C .  Block cipher and Stream cipher D .  Blocker cipher and Streamer cipher E .  3DES cipher and AES cipher

A .  An inner class may be declared as static. B .  An anonymous inner class can be declared as public. C .  An anonymous inner class can be declared as private. D .  An anonymous inner class can extend an abstract class. E .  An anonymous inner class can be declared as protected.

A . UPDATE TABLE B . CREATE CLUSTER C . TRUNCATE TABLE D . ALTER TABLE MOVE E . INSERT INTO···VALUES F . ALTER TABLE···DROP COLUMN G . ALTER TABLE···DROP PARTITION

A .https://assets.asklib.com/images/image2/2018073115112695987.jpg B .https://assets.asklib.com/images/image2/2018073115114664903.jpg C .https://assets.asklib.com/images/image2/2018073115123688801.jpg D .https://assets.asklib.com/images/image2/2018073115124427624.jpg E .https://assets.asklib.com/images/image2/2018073115125392737.jpg

A .  run B .  import C .  default D .  implement

A .  3 / 2 B .  3 < 2 C .  3 * 4 D .  3 << 2 E .  3 * 22 F .  3 <<<2

A、National Library of Canada B、British Library C、Library of Congress D、Library of Russian Academy of Science

2. There is considerable evidence that every thought or emotion has some related physical effect, and that every change within the nervous system should have some psychological effect. Although the precise nature of these correlations is not always known, the view that body and mind are constantly interacting in some way is now accepted by most psychologists. 3. The relationship between mind and body is particularly apparent in emotional states, especially those of fear and anger. When a person is in the grip of a powerful emotion his body undergoes changes, just as it does when he is asleep, ill or under the influence of drugs or alcohol. Most people are familiar with such sensations as a dry mouth when they are nervous, or a racing heart when they are afraid or excited. Such physical changes can be measured, for instance, by recording pulse rate and breathing, or by measuring the dilation of the pupils of the eyes. 4. a particularly sensitive measure of bodily change during periods of emotion is the galvanic skin response(GSR). This is used in the instrument known as the lie detector. The GSR depends on the fact that some mental activity produces bodily changes, such as sweating, which affect the skin's resistance to electricity. To measure GSR, electrodes are placed on the palm and on the back of the hand, and a weak current is passed between the electrodes. Changes in the current are recorded in an amplified form, often by means of an automatically controlled pen on moving paper. Other recordings, for instance of pulse, blood pressure and breathing, can be made simultaneously, by an instrument called a polygraph. 5. The galvanic skin response method has proved a very efficient indicator of general psychological arousal. Even slight embarrassment will cause a defection of the recording pen. A. Every thought or emotion has some related physical effect. B. GSR is a measure of bodily change during periods of emotion. C. GSR is very efficient in indicating people's emotion. D. GSR is very expensive. E. GSR is used to judging prisoners. F. Mind and body has an apparent relationship. Para 2 ______.