Network Access

An administrator is configuring edge interfaces on a Cisco Catalyst switch connected directly to end-user host computers. Which two operational characteristics or benefits occur when Cisco PortFast is enabled on these access ports?

A network administrator manually configures a switch running Rapid PVST+ with a base bridge priority of 28672 for VLAN 100. What total priority value will be transmitted in the Bridge Identifier (BID) within BPDUs generated for VLAN 100 on this switch?

An administrator executes the following command on a Cisco Catalyst switch port connected to an unmanaged access switch:

`Switch(config-if)# spanning-tree portfast`

Shortly after, a transient Layer 2 loop brings down the network segment before STP can converge. Which operational characteristic of Cisco PortFast directly allowed this loop to form?

A network administrator is connecting Switch-1 and Switch-2 using a dual-link EtherChannel across GigabitEthernet0/1 and GigabitEthernet0/2 interfaces. On Switch-1, the member interfaces are configured with `channel-group 10 mode active`. What will happen if the corresponding physical interfaces on Switch-2 are configured with `channel-group 10 mode passive`?

A network engineer must manually configure a routed (Layer 3) Link Aggregation Control Protocol (LACP) EtherChannel bundle on a Cisco Catalyst switch using physical member interfaces GigabitEthernet1/0/1 and GigabitEthernet1/0/2. The EtherChannel must use Port-channel 20 and be configured with IP address 10.20.20.1/30. Arrange the CLI configuration commands into the correct execution sequence from top to bottom.

Which IEEE 802.1D Spanning Tree Protocol (STP) port state populates the switch MAC address table using source MAC addresses of received frames, but does not yet forward user data frames?

A network technician is provisioning interface FastEthernet 0/1 for a newly attached workstation. Which two Cisco IOS commands must be executed in interface configuration mode to manually set the port as a static access interface assigned to VLAN 20? (Select two.)

A switch port running classic IEEE 802.1D Spanning Tree Protocol (STP) detects link UP on a non-PortFast access interface. Place the 802.1D STP port states in the exact chronological sequence through which the interface transitions from link initialization to fully active frame processing.

A network administrator is deploying a dynamic Layer 2 EtherChannel using the Link Aggregation Control Protocol (LACP) between Switch-A and Switch-B across two physical interfaces. Switch-A must actively initiate channel negotiation, whereas Switch-B must only listen and respond to incoming LACP negotiation requests.

Which two configuration statements correctly describe the settings required to establish this EtherChannel bundle? (Select two.)

An administrator notices CDP log messages indicating a native VLAN mismatch on an 802.1Q trunk link between two switches. Switch-1 is configured with native VLAN 99 on interface GigabitEthernet0/1, while Switch-2 uses the default native VLAN 1 on interface GigabitEthernet0/1. If a host in VLAN 99 on Switch-1 transmits untagged frames across the trunk link, how will Switch-2 process this traffic?

A network administrator is inspecting a port configuration on a Cisco Catalyst switch after connecting an end-host workstation. The output of the command `show interfaces fastethernet 0/15 switchport` displays the following information:

text
Name: Fa0/15
Administrative Mode: dynamic auto
Operational Mode: static access
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: native
Negotiation of Trunking: On
Access Mode VLAN: 20 (VLAN0020)
Trunking Native Mode VLAN: 1 (default)

Which statement correctly explains why the operational mode of interface FastEthernet 0/15 is reported as `static access`?

An enterprise network topology running Rapid PVST+ consists of three switches: Switch-1, Switch-2, and Switch-3.

- Switch-1 is configured as the Root Bridge for VLAN 20 with a priority of 4096.
- Switch-2 connects to Switch-1 via a 10 Gigabit Ethernet link ($10\text{ Gbps}$, STP cost = 2).
- Switch-3 connects directly to Switch-1 via a 1 Gigabit Ethernet link (Gi0/1, STP cost = 4).
- Switch-3 also connects to Switch-2 via two parallel 1 Gigabit Ethernet links: Gi0/2 (connected to Switch-2 Gi0/1) and Gi0/3 (connected to Switch-2 Gi0/2).
- All interface STP costs and port priorities use default Cisco values.

Which port role and operational state will interface Gi0/2 on Switch-3 assume for VLAN 20?

Match each Cisco Wireless LAN Controller (WLC) physical or logical interface to its primary operational role and management connectivity requirement.

A network administrator needs to manually configure the base bridge priority for VLAN 30 on a Cisco Catalyst switch running Rapid PVST+. Which configured base priority value is valid and will be accepted by Cisco IOS?

Four Cisco switches (SW1, SW2, SW3, and SW4) are interconnected in a enterprise mesh topology running Rapid PVST+ for VLAN 10. The bridge priorities (base priority values) and MAC addresses for VLAN 10 are configured as follows:

The inter-switch physical links and operational speeds are configured as follows:
- SW1 Gi0/1 <--> SW2 Gi0/1 (1 Gbps)
- SW1 Gi0/2 <--> SW3 Gi0/1 (1 Gbps)
- SW2 Gi0/2 <--> SW4 Gi0/1 (1 Gbps)
- SW2 Gi0/3 <--> SW3 Gi0/2 (100 Mbps)
- SW3 Gi0/3 <--> SW4 Gi0/2 (1 Gbps)

All switch ports use default Rapid PVST+ 802.1w short path costs. Which spanning-tree port role and operational state will interface Gi0/2 on SW4 assume for VLAN 10?

A network administrator needs to explicitly configure interface GigabitEthernet1/0/12 to function strictly as a non-trunking Layer 2 access port on a Cisco Catalyst switch. Which Cisco IOS command must be entered in interface configuration mode to achieve this?

An administrator issues the command `show spanning-tree interface gigabitethernet 0/1` on a Cisco Catalyst switch connected to a workstation. The command output indicates that the port is in the `FWD` state and lists `P2p Edge` under the Type column. Which operational behavior is directly associated with this interface status?

A network administrator is configuring a routed (Layer 3) EtherChannel bundle using LACP on a Cisco Catalyst switch. The administrator creates the logical interface using `interface Port-channel 10`, executes `no switchport`, and assigns an IPv4 address. Next, the administrator enters interface configuration mode for GigabitEthernet0/1, GigabitEthernet0/2, and GigabitEthernet0/3. On GigabitEthernet0/1 and GigabitEthernet0/2, the administrator issues `no switchport` followed by `channel-group 10 mode active`. However, on interface GigabitEthernet0/3, the administrator issues `channel-group 10 mode active` without first executing `no switchport`.

What is the resulting operational status of interface GigabitEthernet0/3 in the output of `show etherchannel summary`?

A network administrator is configuring Rapid PVST+ on Switch-A within an enterprise switched topology. Switch-A links to Switch-B and Switch-C over 802.1Q trunk connections carrying multiple VLANs. The administrator executes the command `spanning-tree vlan 20 priority 24576` on Switch-A.

Which two statements correctly describe the resulting Rapid PVST+ operation and configuration characteristics on Switch-A for VLAN 20? (Select two.)

A network engineer is configuring interface GigabitEthernet1/0/12 on a Cisco Catalyst switch to connect an end-user workstation. The interface must be explicitly configured as a static, non-trunking Layer 2 port placed into VLAN 75. Which two Cisco IOS CLI commands must be executed within interface configuration mode to achieve this setup? (Select two.)