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最新的 CCNA 640-821 免費考試真題:
1. Host A needs to communicate with the email server shown in the graphic. What address will be placed in the destination address field of the frame when it leaves Host A?
A) the MAC address of E1 of the router
B) the MAC address of the email server
C) the MAC address of E0 of the router
D) the MAC address of Switch 2
E) the MAC address of Host A
F) the MAC address of Switch 1
2. Which command can be used to determine the type of cable attached to the Serial 0/0 interface on a router?
A) show running-config
B) show interfaces serial 0/0
C) show version
D) show ip interface
E) show line serial 0/0
F) show controllers serial 0/0
3. Which Cisco IOS command identifies the system hardware and the IOS currently running on a router?
A) show running-config
B) show version
C) show processes
D) show controllers
E) show startup-config
4. Refer to the graphic. Although the console password was set to "cisco", it displays in the router configuration as shown. What command caused the password to be stored like this?
A) Router(config)# password-encryption md 7
B) Router(config-line)# exec-timeout 1 55
C) Router(config)# service password-encryption
D) Router(config)# encrypt password
5. A router receives a packet on interface 172.16.45.66/26. The source IP of the packet is
172.16.45.126/26 and the destination is 172.16.46.191/26. How will the router handle the packet?
A) The destination is a host on the same subnet, so the router will forward the packet.
B) The destination is a network address, so the router will forward the packet.
C) The destination is a host on another subnet, so the router will not forward the packet.
D) The destination is a broadcast address, so the router will not forward the packet.
問題與答案:
問題 #1 答案: C | 問題 #2 答案: F | 問題 #3 答案: B | 問題 #4 答案: C | 問題 #5 答案: D |