總結挑戰 · Summary Challenge

Which two statements describe key functions of a router? (Choose two.)下列哪兩項敘述描述了路由器的關鍵功能？（選兩項。）

Which statement correctly describes the role of a router?下列哪一項敘述正確描述了路由器的角色？

Routers are responsible only for reaching hosts that are in the local network.路由器只負責到達本地網路內的主機。Routers use a MAC table to route between networks.路由器使用 MAC 表在網路之間進行路由。Routers are required to reach hosts that are not in the local network.要到達不在本地網路內的主機，需要路由器。Routers use an ARP table to route between networks.路由器使用 ARP 表在網路之間進行路由。

Where is the running configuration of the router temporarily stored while the router is powered on?路由器開機通電時，執行中設定會暫時儲存在哪裡？

RAMRAMFlash memory快閃記憶體NVRAMNVRAMROMROM

Which statement is false in regard to router path determination?關於路由器的路徑判斷，下列哪一項敘述是錯誤的？

A routing table may contain entries both for a destination network or for its subnet.路由表中可能同時包含目的地網路及其子網路的項目。The longest prefix match always wins among the routes that are installed in the routing table.在路由表中已安裝的路由當中，最長前綴比對永遠勝出。Static routes have a default administrative distance of 0.靜態路由的預設管理距離為 0。When a router has the choice of a static route and an OSPF route, the static route takes precedence.當路由器可以選擇靜態路由或 OSPF 路由時，靜態路由具有優先權。

In a routing table, what is an optional entry that is used when no explicit path to a destination is found?在路由表中，當找不到通往目的地的明確路徑時，會使用哪一種選用項目？

static route靜態路由directly connected route直接連接路由OSPF routeOSPF 路由default route預設路由

What does the letter D that is associated with the following routing table entry represent? RouterA# show ip route
D 192.168.20.0/24 [90/156160] via 10.1.1.1, 00:01:23, GigabitEthernet0/0
<" output omitted ">以下路由表項目中的字母 D 代表什麼意思？RouterA# show ip route
D 192.168.20.0/24 [90/156160] via 10.1.1.1, 00:01:23, GigabitEthernet0/0
<" output omitted ">

The route is learned by OSPF.此路由是透過 OSPF 學習到的。The route is learned by EIGRP.此路由是透過 EIGRP 學習到的。The route is static.此路由是靜態路由。The route is learned by DMVPN.此路由是透過 DMVPN 學習到的。

What is the default administrative distance for OSPF?OSPF 的預設管理距離是多少？

11011011511590 for internal route and 170 for external route內部路由為 90，外部路由為 170170 for internal route and 90 for external route內部路由為 170，外部路由為 90

According to the command output, how are packets that are bound for the network 192.168.2.0 forwarded? RouterX# show ip route
D 192.168.1.0/24 [90/25789217] via 10.1.1.1
R 192.168.2.0/24 [120/4] via 10.1.1.2
O 192.168.3.0/24 [110/229840] via 10.1.1.3根據以下指令輸出，前往網路 192.168.2.0 的封包是如何轉送的？RouterX# show ip route
D 192.168.1.0/24 [90/25789217] via 10.1.1.1
R 192.168.2.0/24 [120/4] via 10.1.1.2
O 192.168.3.0/24 [110/229840] via 10.1.1.3

via 10.1.1.2, an IPv4 address on this router (RouterX)經由 10.1.1.2，這是此路由器（RouterX）上的 IPv4 位址via 10.1.1.2, an IPv4 address on a remote router經由 10.1.1.2，這是遠端路由器上的 IPv4 位址via 10.1.1.3 an IPv4 address on a remote router經由 10.1.1.3，這是遠端路由器上的 IPv4 位址via 10.1.1.3, an IPv4 address on this router (RouterX)經由 10.1.1.3，這是此路由器（RouterX）上的 IPv4 位址

Summary Challenge總結挑戰