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单选题
A layer 3 switch can move packets between subnets based on which of the following criteria?（）
A
802.1q tag
B
Port
C
Application
D
IP address
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A layer 3 switch can move packets between subnets based on which of the following criteria?()
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Which of the following is a characteristic of a data center core?()
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Which two of these are correct regarding the recommended practice for distribution layer design based on the following configuration?()
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考题
Assuming that an IP packet is sent from a source address in VLAN1 to a destination address in VLAN2 through a layer-3 switch, which part of the packet will be changed?（）A、Layer 2 TTLB、Layer 3 TTLC、Layer 3 source addressD、Layer 3 destination address
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When policy - based routing (PBR) is being configured, which three criteria can the set command specify?（）A、all interfaces in the path toward the destinationB、all networks in the path toward the destinationC、adjacent next hop router in the path toward the destinationD、all routers in the path toward the destinationE、all interfaces through which the packets can be routedF、type of service and precedence in the IP packets
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When configuring a routed port on a Cisco multilayer switch， which of these is a required configuration task that you must perform to enable that port to function as a routed port？ （）A、Enable the switch to participate in routing updates from external devices with the router command in global configuration mode.B、Enter the no switchport command to disable Layer 2 functionality at the interface level.C、Each port participating in routing of Layer 3 packets must have an IP routing protocol assigned on aperinterface level.D、Routing is enabled by default on a multilayer switch， so the port can become a Layer 3 routing interface by assigning the appropriate IP address and subnet information.
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Which two of these are characteristics of MPLS VPNs？ （）A、 Layer 3 MPLS VPNs can forward only IP packetsB、 Layer 2 MPLS VPNs can forward any network protocolC、 MPL S label paths are automatically formed based on Layer 2 framesD、 Layer 3 MPLS VPNs can forward any network protocol based on Layer 2 framesE、 In Layer 2 MPLS VPNS， the service provider controls the customer Layer 3 policies
考题
A switch port on TK1 is being configured to support 802.1Q trunking. Which of the following are true about 802.1Q trunking？（）A、Both switches must be in the same VTP domain.B、The encapsulation type of both ends of the trunk does not have to match.C、The native VLAN on both ends of the trunk must be VLAN 1.D、802.1Q trunking can only be configured on a Layer 2 port.E、In 802.1Q trunking， all VLAN packets are tagged on the trunk link， except the native VLAN.
考题
Which of the following devices is used to move frames between a source and destination basedon a MAC address?（）A、RepeaterB、HubC、RouterD、Switch
考题
A layer 3 switch can move packets between subnets based on which of the following criteria?（）A、802.1q tagB、PortC、ApplicationD、IP address
考题
单选题A network IPS provides which of the following?（）A
The layer 3 protocol on which other protocols like TCP and UDP communicate.B
Enables the IPSec protocol on internal workstations.C
Packet-based detection and prevention of network attacks.D
Single mode IP communication for a fiber line between remote sites.
考题
单选题Which JUNOS software feature allows a user to define specific next-hop values for IP packets based on the source IP address of that packet?（）A
MPLSB
Load BalancingC
Class Based ForwardingD
Filter Based Forwarding
考题
单选题When configuring a routed port on a Cisco multilayer switch， which of these is a required configuration task that you must perform to enable that port to function as a routed port？ （）A
Enable the switch to participate in routing updates from external devices with the router command in global configuration mode.B
Enter the no switchport command to disable Layer 2 functionality at the interface level.C
Each port participating in routing of Layer 3 packets must have an IP routing protocol assigned on aperinterface level.D
Routing is enabled by default on a multilayer switch， so the port can become a Layer 3 routing interface by assigning the appropriate IP address and subnet information.
考题
单选题Which of the following is a characteristic of a data center core?（）A
Server-to-server traffic always remains in the core layer.B
The recommended practice is for the core infrastructure to be in Layer 3.C
The boundary between Layer 2 and Layer 3 should be implemented in the aggregation layer.D
The Cisco Express Forwarding hashing algorithm is the default, based on the IP address and Layer 4 port.E
Core layer should run BGP along with an IGP becauseiBGP has a lower administrative distance than any IGP.
考题
多选题When policy - based routing (PBR) is being configured, which three criteria can the set command specify?（）Aall interfaces in the path toward the destinationBall networks in the path toward the destinationCadjacent next hop router in the path toward the destinationDall routers in the path toward the destinationEall interfaces through which the packets can be routedFtype of service and precedence in the IP packets
考题
单选题Which of the following devices is used to move frames between a source and destination basedon a MAC address?（）A
RepeaterB
HubC
RouterD
Switch
考题
单选题Assuming that an IP packet is sent from a source address in VLAN1 to a destination address in VLAN2 through a layer-3 switch, which part of the packet will be changed?（）A
Layer 2 TTLB
Layer 3 TTLC
Layer 3 source addressD
Layer 3 destination address
考题
单选题A switch port on TK1 is being configured to support 802.1Q trunking. Which of the following are true about 802.1Q trunking？（）A
Both switches must be in the same VTP domain.B
The encapsulation type of both ends of the trunk does not have to match.C
The native VLAN on both ends of the trunk must be VLAN 1.D
802.1Q trunking can only be configured on a Layer 2 port.E
In 802.1Q trunking， all VLAN packets are tagged on the trunk link， except the native VLAN.
考题
多选题What are two characteristics of SLB router mode?（）AThe design supports multiple server subnets.BAn end-user sees the IP address of the real server.CSLB routes between the outside and inside subnets.DThe source or destination MAC address is rewritten, but the IP addresses left alone.ESLB acts as a bump in the wire between servers and upstream firewall or Layer 3 devices.
考题
单选题Which of the following is a characteristic of a data center core？（）A
Server-to-server traffic always remains in the core layer.B
The recommended practice is for the core infrastructure to be in Layer 3.C
The boundary between Layer 2 and Layer 3 should be implemented in the aggregation layer.D
The Cisco Express Forwarding hashing algorithm is the default， based on the IP address andLayer 4 port.E
Core layer should run BGP along with an IGP because iBGP has a lower administrativedistance than any IGP.
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