Which command would the technician use to see layer 1/layer 2 details?
Which command would the technician use to see the Layer 1 and Layer 2 details of a switch port? The show interfaces command can be used on both routers and switches to see speed, duplex, media type, MAC address, port type, and other Layer 1/Layer 2-related information.
What does a network technician suspect about a particular switch connection?
A network technician suspects that a particular network connection between two Cisco switches is having a duplex mismatch. Which command would the technician use to see the Layer 1 and Layer 2 details of a switch port? - Premium IT Exam Answers
How do I configure layer 2 etherchannels?
When configuring Layer 2 EtherChannels, follow these guidelines: Assign all ports in the EtherChannel to the same VLAN, or configure them as trunks. Ports with different native VLANs cannot form an EtherChannel. If you configure an EtherChannel from trunk ports, verify that the trunking mode (ISL or IEEE 802.1Q) is the same on all the trunks.
What are two services provided by the OSI network layer?
What are two services provided by the OSI network layer? routing packets toward the destination, and encapsulating PDUs from the transport layer What are two functions of NVRAM? to retain contents when power is removed and to store the startup configuration file
What is fault tolerant network?
What is a characteristic of a fault tolerant network? a network that protects confidential information from unauthorized access. a network that can expand quickly to support new users and applications without impacting the performance of the service delivered to existing users.
How does home networking work?
Home networking uses existing electrical wiring to connect devices to the network wherever there is an electrical outlet, saving the cost of installing data cables. 4.
Does a Layer 3 switch support VLANs?
A Layer 3 switch supports VLANs, but a Layer 2 switch does not . An IP address can be assigned to a physical port of a Layer 3 switch. However, this is not supported in Layer 2 switches.*. A Layer 3 switch maintains an IP address table instead of a MAC address table.
Can a static IP address be ping?
As shown in the exhibit, a static IP address is assigned to the company web server. However, the web server cannot access the Internet. The administrator verifies that local workstations with IP addresses that are assigned by a DHCP server can access the Internet, and the web server is able to ping local workstations.
What should the choice of a particular load-balancing method be based on?
Different load-balancing methods have different advantages, and the choice of a particular load-balancing method should be based on the position of the switch in the network and the kind of traffic that needs to be load-distributed.
How does etherchannel work?
EtherChannel balances the traffic load across the links in a channel by reducing part of the binary pattern formed from the addresses in the frame to a numerical value that selects one of the links in the channel. EtherChannel load-balancing can use several methods of load balancing that include MAC addresses or IP addresses, source or destination addresses, or both source and destination addresses. The selected mode applies to all EtherChannels configured on the switch. You configure the load-balancing and forwarding method by using the port-channel load-balance global configuration command.
What is source IP forwarding?
With source-IP address-based forwarding, when packets are forwarded to an EtherChannel, they are distributed across the ports in the EtherChannel based on the source-IP address of the incoming packet. Therefore, to provide load-balancing, packets from different IP addresses use different ports in the channel, but packets from the same IP address use the same port in the channel.
What is DTP in a router?
The Dynamic Trunking Protocol (DTP) and the Cisco Discovery Protocol (CDP) send and receive packets over the physical ports in the EtherChannel. Trunk ports send and receive PAgP protocol data units (PDUs) on the lowest numbered VLAN.
How many Ethernet ports are there in an Ethernet channel?
Each EtherChannel can consist of up to eight compatibly configured Ethernet ports. The number of EtherChannels is limited to 128 . All ports in each EtherChannel must be configured as either Layer 2 or Layer 3 ports. The EtherChannel Layer 3 ports are made up of routed ports.
What is an etherchannel?
EtherChannel provides fault-tolerant high-speed links between switches, routers, and servers. You can use Etherchannels to increase the bandwidth between the wiring closets and the data center, and you can deploy it anywhere in the network where bottlenecks are likely to occur.
What happens if a link in an ether channel fails?
If a link within an EtherChannel fails, traffic previously carried over that failed link moves to the remaining links within the EtherChannel. If traps are enabled on the switch, a trap is sent for a failure that identifies the switch, the EtherChannel, and the failed link. Inbound broadcast and multicast packets on one link in an EtherChannel are blocked from returning on any other link of the EtherChannel.
