總結挑戰 · Summary Challenge

Summary Challenge Questions

總結挑戰問題

What do VLANs do to improve network performance?VLAN 如何改善網路效能？

separate large broadcast domains into smaller broadcast domains將大型廣播網域分割為較小的廣播網域create large broadcast domains out of smaller broadcast domains將較小的廣播網域合併成大型廣播網域create one large virtual switch out of many physical switches將多台實體交換器合併成一台大型虛擬交換器allow users to connect over radio frequency允許使用者透過無線射頻連線

Assume that you have just created a VLAN 10 on a switch. Which command should you use to verify if the VLAN was created?假設你剛在交換器上建立了 VLAN 10，應該使用哪個指令來驗證該 VLAN 是否已建立？

show virtual lanshow virtual lanshow vlan id 100show vlan id 100show vlan briefshow vlan briefshow virtual lan id 10show virtual lan id 10show interface Ethernet0/0 switchportshow interface Ethernet0/0 switchport

What happens to a port that belongs to VLAN 5 after VLAN 5 is accidentally deleted?若屬於 VLAN 5 的連接埠，在 VLAN 5 被意外刪除後會發生什麼事？

The port goes to the error-disabled state and is not operational.該連接埠會進入錯誤停用狀態，且無法運作。The port becomes inactive and will not be functional until the missing VLAN 5 is created.該連接埠會變成非作用中，直到遺失的 VLAN 5 被重新建立才能恢復功能。The port remains operational.該連接埠仍維持正常運作。The port is shut down.該連接埠會被關閉。

How does 802.1Q incorporate VLAN information into a frame?802.1Q 如何將 VLAN 資訊納入訊框中？

It adds a 4-byte header and a 26-byte tag to the frame header.它在訊框標頭中加入一個 4 位元組標頭與一個 26 位元組標籤。It adds a 4-byte tag to the frame header.它在訊框標頭中加入一個 4 位元組標籤。It reroutes the frame through the VLAN interface, causing a different destination address.它透過 VLAN 介面重新導向訊框，導致目的位址改變。It reroutes the frame through the VLAN interface, causing a different source address.它透過 VLAN 介面重新導向訊框，導致來源位址改變。

By default, which VLAN or VLANs are permitted across a trunk link?預設情況下，哪個（些）VLAN 被允許通過中繼鏈路？

no VLANs沒有任何 VLANnative VLAN原生 VLANall VLANs所有 VLANVLAN 0VLAN 0

What must you ensure when configuring two ends of an 802.1Q trunk?在設定 802.1Q 中繼的兩端時，必須確保什麼？

The native VLAN must be tagged.原生 VLAN 必須被標記。The native VLAN must be the same.原生 VLAN 必須相同。DTP must be disabled.必須停用 DTP。DTP modes on both ends must be the same.兩端的 DTP 模式必須相同。

Assume that you have been told to secure the trunk ports on a switch. Which two options are recommended as best practice? (Choose two.)假設你被要求保護某交換器上的中繼埠。以下哪兩個選項是建議的最佳實務？（選擇兩項。）

Change the native VLAN to something other than VLAN 1.將原生 VLAN 改為 VLAN 1 以外的 VLAN。Make the native VLAN different on both ends.讓兩端的原生 VLAN 不同。Tag the native VLAN.為原生 VLAN 加上標記。Enable DTP.啟用 DTP。Make the native VLAN VLAN 1.將原生 VLAN 設為 VLAN 1。

Summary Challenge總結挑戰

Summary Challenge Questions

總結挑戰問題