Three switches are connected to one anther via trunk ports.Assuming the default switch configuration,which switch is elected as the root bridge for the spanning-tree instance of vlan 1?（）

相似题目

• What are three valid reasons to assign ports to VLANs on a switch?（）

  A . to make VTP easier to implement B . to isolate broadcast traffic C . to increase the size of the collision domain D . to allow more devices to connect to the network E . to logically group hosts according to function F . to increase network security

  查看最佳答案

• You connected to the database using the following connection string： CONNECT hr/hr@test.us.oracle.com：1521/mydb  Which three statements are correct regarding the connection string？（）

  A . mydb is a service name. B . test.us.oracle.com is a database name. C . 1521 is the listener port number. D . mydb is a host name. E . test.us.oracle.com is a net service name. F . hr is a username. G . test.us.oracle.com is an instance name.

  查看最佳答案

• Which three statements are true about the privileged connection options available in Oracle9i？（）

  A . The CONNECT INTERNAL is disallowed.  B . The Server Manager tool is no longer supplied.  C . The listener must be running to make a connection.  D . The use of remote password login file (orapw<sid>) is unchanged.

  查看最佳答案

• Two access points running the core feature set are connected to the same switch and are providingguest services. If PSPF is enabled， what must be enabled on the switch to prevent clients fromseeing one another’s data？（）

  A . port-based RADIUS B . 802.1q trunking C . inline power D . protected port

  查看最佳答案

• During voice implementation，  which two required items are configured at an access layer switch connected to an IP phone to provide VoIP communication？（）

  A . allowed codecs B . native VLAN C . auxiliary VLAN D . Cisco Unified Communications Manager IP address E . RSTP

  查看最佳答案

• What are three valid reasons to assign ports to VLANs on a switch？（）

  A . to make VTP easier to implement B . to isolate broadcast traffic C . to increase the size of the collision domain D . to allow more devices to connect to the network E . to logically group hosts according to function F . to increase network security

  查看最佳答案

• What are three of the functions that AutoQoS performs when it is configured on a switch？（）

  A . synchronizes FIFO， PQ， CQ， and MDRR， with WFQ， CBWFQ， and LLQ B . enables strict priority queuing for voice traffic， and weighted round robin queuing for data traffic C . enables low latency queuing to ensure that voice traffic receives priority treatment D . enforces a trust boundary on switch access ports and uplinks/downlinks  E . modifies queue sizes as well as queue weights where required  F . adjusts link speeds to adapt to QoS need

  查看最佳答案

• Which are valid modes for a switch port used as a VLAN trunk (Choose three.)（）。

  A . transparent B . auto C . on D . desirable E . blocking F . forwarding

  查看最佳答案

• Which three options are valid WAN connectivity methods?（）

  A . PPP B . WAP C . HDLC D . MPLS E . L2TPv3 F . ATM

  查看最佳答案

• The core Company switches are configured to use 802.1Q trunks.  Which three statements are  correct with regard to the IEEE 802.1Q standard？（）

  A .  The IEEE 802.1Q frame format adds a 4 byte field to a Ethernet frame B .  The packet is encapsulated with a 26 byte header and a 4 byte FCS C .  The protocol uses point-to-multipoint connectivity D .  The protocol uses point-to-point connectivity E .  The IEEE 802.1Q frame uses multicast destination of 0x01-00-0c-00-00 F .  The IEEE 802.1Q frame retains the original MAC destination addre

  查看最佳答案

• Which three statements are true about the voice VLAN feature on a Catalyst 2950 switch？ （Choose  three.）（）  

  A .  The CoS value is trusted for 802.1p or 802.1q tagged traffic. B .  The voice VLAN feature is disabled by default. C .  The IP phone accepts the priority of all tagged and untagged traffic and sets the CoS value to 4. D .  When the voice VLAN feature is enabled， all untagged traffic is sent according to the default CoS priority of the port. E .  PortFast is automatically disabled when a voice VLAN is configured. F .  The default CoS value for incoming traffic is set to 0.

  查看最佳答案

• Two Company switches are connected via a trunk using VTP. Which VTP information does a  Catalyst switch advertise on its trunk ports when using VTP？（）

  A . STP root status B . VTP mode C . Negotiation status D . Management domain E . Configuration revision number

  查看最佳答案

• Which three of these are types of Ethernet Virtual Connections （EVCs） in the MEF concept？ （）

  A . rooted multipoint EVC （E-Tree） B . point-to-point EVC （E-Line） C . point-to-multipoint EVC （E-Tree） D . hub spoke EVC （E-Tree） E . multipoint-to-multipoint EVC （E-LAN）

  查看最佳答案

• Two switches are connected through a trunk link.which two commands show that there is a native VLAN mismatch on that link？（）

  A . show interfaces interface B . show vlan brief C . show interfaces interface switchport D . show interface interface trunk E . show interfaces vla

  查看最佳答案

• What are three methods to reduce Mysql server exposure to remote connections?（）

  A . Setting — skip-networking when remote connections are not required B . Using the sql_mode=STRICT_SECURE after connections are established for encrypted communications C . Setting specific GRANT privilege to limit remote authentication D . Setting – mysql_secure_configuration to enable paranoid mode E . Using SSL when transporting data over remote network

  查看最佳答案

• Two switches are connected through a trunk link.which two commands show that there is a native VLAN mismatch on that link?（）

  A . show interfaces interface B . show vlan bri C . show interfaces interface switchport D . show interface interface trunk E . show interfaces vla

  查看最佳答案

• Which three connection options are available when configuring a switch port to be part of a privateVLAN? （）(Choose three.)

  A . isolated mode B . switchport mode C . modular mode D . community mode E . promiscuous mode F . global mode

  查看最佳答案

• Two access points running the core feature set are connected to the same switch and are  providing guest services. if pspf is enabled. What must be enabled on the switch to prevent clients from seeing one another’s data？（）

  A . port-based radius B . 802.1q trunking C . inline power D . protected port

  查看最佳答案

• If an edge Label Switch Router （LSR） is properly configured，which three combinations are possible？（）

  A . A received IP packet is forwarded based on the IP destination address and the packet is sent as an IP packet. B . An IP destination exists in the IP forwarding table. A received labeled packet is dropped because the label is not found in the LFIB table. C . There is an MPLS label-switched path toward the destination. A received IP packet is dropped because the destination is not found in the IP forwarding table. D . A received IP packet is forwarded based on the IP destination address and the packet is sent as a labeled packet. E . A received labeled IP packet is forwarded based upon both the label and the IP address. F . A received labeled packet is forwarded based on the label. After the label is swapped，the newly labeled packet is sent.

  查看最佳答案

• What are three valid reasons to assign ports on VLANs on a switch?（）

  A . to make VTP easier to implement B . to isolate broadcast traffic C . to increase the size of the collision domain D . to allow more devices to connect to the network E . to logically group hosts according to function F . to increase network security

  查看最佳答案

• Which three resource plan parameters are used to enable Automatic Consumer Group Switching to estimate job execution times automatically， and to perform a switch to a low priority consumer group before they are initiated？（）

  A . SWITCH_TIME B . SWITCH_GROUP C . MAX_SESS_POOL D . SWITCH_ESTIMATE

  查看最佳答案

• Which are valid modes for a switch port used as a VLAN trunk? (Choose three.)（）

  A . transparent B . auto C . on D . desirable E . blocking F . forwarding

  查看最佳答案

• Which three statements about the DHCP snooping feature on Cisco Nexus switches are true？ （）

  A .  DHCP snooping commands are not available until the feature is enabled with the feature dhcp- snooping command. B .  When you enable the DHCP snooping feature， the switch begins building and maintaining the DHCP snooping binding database. C .  The switch will not validate DHCP messages received or use the DHCP snooping binding database to validate subsequent requests from untrusted hosts until DHCP snooping is enabled globally and for each specific VLAN. D .  Globally disabling DHCP snooping removes all DHCP snooping configuration on the switch. E .  Globally disabling DHCP snooping does not remove any DHCP snooping configuration or the configuration of other features that are dependent upon the DHCP snooping feature.

  查看最佳答案

• What are three valid reasons to assign ports on VLANs on a switch？（）

  A. to make VTP easier to implement B. to isolate broadcast traffic C. to increase the size of the collision domain D. to allow more devices to connect to the network E. to logically group hosts according to function F. to increase network security

  查看最佳答案