What are two reasons for packet loss on a VoIP connection？（）

A . The network was originated via redistribution of an interior gateway protocol into BGP B . The network was defined by a static route C . The network was originated via a network or aggregate command D . The network was learned via EBGP E . The network was learned via IBGP

A . You have too many tables. B . Your tables are too long. C . Your tables have difficult names. D . You want to work on your own tables. E . You want to use another schema's tables. F . You have too many columns in your tables.

A . to control vty access into a router   B . to control broadcast traffic through a router   C . to filter traffic as it passes through a router   D . to filter traffic that originates from the router   E . to replace passwords as a line of defense against security incursions&e

A . More than one database is to be registered with the listener. B . The users will connect the database by using the host naming method. C . The Oracle Enterprise Manager is to be used to monitor an Oracle9i database. D . The database that is to be registered with the listener is configured in shared server mode. E . The listener is not configured on the default port of 1521 and the instance is not configured to register with a nondefault port.

A . More than one database is to be registered with the listener. B . The users will connect the database by using the host naming method. C . The Oracle Enterprise Manager is to be used to monitor an Oracle9i database. D . The database that is to be registered with the listener is configured in shared server mode. E . The listener is not configured on the default port of 1521 and the instance is not configured to register with a nondefault port.

A . Information about port roles is sent to all switches. B . RSTPs that are based on Cisco products require no additional configuration. C . Features such as UplinkFast and BackboneFast are compatible with RSTP. D . An RSTP that is based on Cisco products generally performs better than the Cisco proprietary 802.1D enhancements.

A . The network was originated via redistribution of an interior gateway protocol into BGP B . The network was defined by a static route C . The network was learned via IBGP D . The network was learned via EBGP E . The network was originated via a network or aggregate command

A . The database must be in ARCHIVELOG mode B . The database must be in MOUNT EXCLUSIVE mode C . The database must be opened in RESTRICTED mode D . The database instance must be started in the NOMOUNT state E . The database instance must have the keep buffer pool defined

A . The network was originated via redistribution of an interior gateway protocol into BGP. B . The network was defined by a static route. C . The network was learned via IBGP. D . The network was learned via EBGP. E . The network was originated via a network or aggregate command.

A . Smothers burning surfaces，organically destroys fuel B . Cools fire and adjacent surfaces，provides protective barrier C . Reaches areas not protected by steam or CO smothering systems D . Allows fire to be attacked from leeward，saturates liquid surface

A . to verify the type of cable interconnecting two devices B . to determine the status of network services on a remote device C . to obtain VLAN information from directly connected switches D . to verify Layer 2 connectivity between two devices when Layer 3 fails E . to obtain the IP address of a connected device in order to telnet to the device F . to determine the status of the routing protocols between directly connected router

A . telnet access does not require a password B . nat C . no broadcast D . chanage of destination address in the ipv6 header E . chanage of source address in the ipv6 header F . autoconfiguratio

A . the use of hosted email services eliminating the need for local security B . the perceived costs of security solutions C . the lack of risk analysis D . the lack of threats to their network E . the belief that free security tools are sufficient F . the desire to avoid unnecessary technologie

A . to control vty access into a router B . to control broadcast traffic through a router C . to filter traffic as it passes through a router D . to filter traffic that originates from the router E . to replace passwords as a line of defense against security incursio

A . Incorrect VPI and VCI configuration B . Noise， gain hits， or other transmission problems on the data link equipment C . ATM cells are dropped due to incorrect ATM routing in the service provider. D . A faulty or failing ATM interface. E . Cells are dropped due to traffic policing in the ATM cloud on one or more virtual circuits attached to theATM interface

A .  to eliminate the need for VoIP gateways B .  to scale a VoIP installation with multiple gateways C .  to provide call admission control and limit the number of simultaneous calls on the network  D .  to meet the requirement to control H·323 gateways on a LAN E .  to accept call requests and reduce the load on the gateway

A . telnet access does not require a password B . nat C . no broadcast D . chanage of destination address in the ipv6 header E . chanage of source address in the ipv6 header F . autoconfiguratio

A . to verify the type of cable interconnecting two devices B . to determine the status of network services on a remote device C . to obtain VLAN information from directly connected switches D . to verify Layer 2 connectivity between two devices when Layer 3 fails E . to obtain the IP address of a connected device in order to telnet to the device F . to determine the status of the routing protocols between directly connected router

A . to verify the type of cable interconnecting two devices B . to determine the status of network services on a remote device C . to obtain VLAN information from directly connected switches D . to verify Layer 2 connectivity between two devices when Layer 3 fails E . to obtain the IP address of a connected device in order to telnet to the device F . to determine the status of the routing protocols between directly connected router

A．Nike is the best brand of athletic footwear and sports clothing. B．The managers of Nike, Bowerman and Knight are both athletes. C．The company let Jordan endorse Nile's shoes. D．The diligence of the company managers. 此题为多项选择题。

A．This is to foster eating disorder among the models. B．Clothes looks better on thin models. C．This is to be deliberately different from normal women. 此题为多项选择题。