Which interface does java.util.Hashtable implement？（）  

A .  Java.util.Map. B .  Java.util.List. C .  Java.util.Hashable. D .  Java.util.Collection.

A .  Final int k = 4； B .  Public int k = 4； C .  Static int k = 4； D .  Private int k = 4； E .  Abstract int k = 4； F .  Volatile int k = 4；

A . Set extends Collection. B . All methods defined in Set are also defined in Collection. C . List extends Collection. D . All methods defined in List are also defined in Collection. E . Map extends Collection.

A . IP address B . encapsulation PPP C . no shutdown D . PPP authentication CHAP E . Speed F . None of the above

A . javax.servlet.http.HttpServletRequest B . javax.servlet.http.HttpSessionContext C . javax.servlet.http.HttpServletResponse D . javax.servlet.http.HttpSessionBindingEvent E . javax.servlet.http.HttpSessionAttributeEvent

A . AutoQoS is supported on Frame Relay multipoint subinterfaces. B . AutoQoS is supported on low-speed ATM PVCs in point-to-point subinterfaces. C . AutoQoS is supported on serial PPP and HDLC interfaces. D . AutoQoS is supported only on Frame Relay main interfaces and not on any subinterface configuration.

A .  void run（） B .  public void run（） C .  public void start（） D .  void run（int priority） E .  public void run（int priority） F .  public void start（int priority）

A .  javax.servlet.http.HttpServletRequest B .  javax.servlet.http.HttpSessionContext C .  javax.servlet.http.HttpsServletResponse D .  javax.servlet.http.HttpSessionBindingEvent E .  javax.servlet.http.HttpSessionAttributeEvent

A .  Objects from classes that use aggregation cannot be serialized. B .  Art object serialized on one JVM can be successfully deserialized on a different JVM. C .  The values in fields with the volatile modifier will NOT survive serialization anddeserialization. D .  The values in fields with the transient modifier will NOT survive serialization anddeserialization. E .  It is legal to serialize an object of a type that has a supertype that does NOT implement java.io.Serializable.

A .  public class Employee extends Info implements Data { public void load（） { /*do something*/ } } B .  public class Employee implements Info extends Data { public void load（） { /*do something*/ } } C .  public class Employee extends Info implements Data { public void load（） { /*do something */ } public void Info.load（） { /*do something*/ } } D .  public class Employee implements Info extends Data { public void Data.load（） { /*dsomething */ } public void load（） { /*do something */ } } E .  public class Employee implements Info extends Data { public void load（） { /*do something */ } public void Info.load（）{ /*do something*/ } } F .  public class Employee extends Info implements Data{ public void Data.load（） { /*do something*/ } public void Info.load（） { /*do something*/ } }

A . A B . B C . C D . D E . E

A . HSRP B . GLBP C . VRRP D . SLB E . RPR F . RPR+

A . It will fragment the packet at Layer 2. B . It will fragment the packet at Layer 3. C . It will drop the packet and send an ICMPv6 message "packet too big" back to the source. D . It will drop the packet.

A .  passive optical network （PON） B .  serial C .  Fibre Channel D .  Fast Ethernet E .  ADSL2+

A . The source and destination addresses B . The destination port number C . The destination address D . The source address E . All of the above

A .  void methoda（）； B .  public double methoda（）； C .  public final double methoda（）； D .  static void methoda（double d1）； E .  protected void methoda（double d1）；

A . The port is configured for both data and voice traffic. B . The port is fully dedicated to forwarding voice traffic. C . The port will operate as an FXS telephony port. D . Voice traffic will be redirected to VLAN 222.

A . retransmit - interval B . de ad - interval C . stub area D . virtual link E . NSSA area

A . Objects from classes that use aggregation cannot be serialized B . An object serialized on one JVM can be successfully deserialized on a different JVM C . The values in fields with the volatile modifier will NOT survive serialization and deserialization D . The values in fields with the transient modifier will NOT survive serialization and deserialization E . It is legal to serialize an object of a type that has a supertype that does NOT implement java.io.Serializable

A .  It enables MAC ACLs to be applied to only IP packets that enter the interface. B .  It enables MAC ACLs to be applied to only non-IP packets that enter the interface. C .  It enables MAC ACLs to be applied to all packets that enter the interface. D .  It enables MAC ACLs to be used for QoS settings.

A . signaling travels in-band  B . up to 24 voice channels  C . up to 32 voice channels  D . signaling travels in time slot 17  E . uses Q.931 signaling protocol in a common channel

A . The particular event instance. B . The source of the event. C . The set of events that were triggered by the same action. D . The type of event. E . The type of component from which the event originated.

A .  Causes the interface to apply ISL framing for traffic on VLAN 7 B .  Configures the trunking interface to forward traffic from VLAN 7 C .  Configures the interface to be a trunking port and causes traffic on VLAN 7 to be 802.1q tagged D .  Configures the trunking interface to send traffic from VLAN 7 untagged E .  None of the other alternatives apply

A. PPP on the ATM interface B. VPI/VCI on the dialer interface C. IP address on the ATM interface D. CHAP on the dialer interface