思科认证考试（ＣＣＮＡ）考试模拟题０１—１９及答案

     

IP fast switching on the same

interface is disabled

IP multicast fast switching is enabled

Router Discovery is disabled

IP output packet accounting is disabled

IP access violation accounting is

disabled

TCP/IP header compression is disabled

Probe proxy name replies are disabled

Gateway Discovery is disabled

Policy routing is disabled

Network address translation is disabled


5. [CxNx] Which of the following commands will display the contents of the ARP cache of your Cisco router?

a) show ip arp cache
b) show ip route
c) show ip arp
d) show arp
e) there is no way to display the ARP cache

Answer
c) show ip arp

Example:
Router_A#sh ip arp
Protocol Address Age(min) Hardware Address Type Interface
Internet 1.1.1.2 - 0010.7b15.bd50 ARPA FastEthernet1/0
Internet 10.10.10.1 - 0010.7b15.bd41 ARPA Ethernet0/0


6. [CxNx] Reverse Address Resolution Protocol (RARP) is the process:

a) Where an IP host resolves it’s IP address by broadcasting it’s MAC address to the network and a BOOTP server assigns it an IP address.
b) Where an IP host resolves it’s MAC address by broadcasting to the local network it’s IP address.
c) Where an IP host tries to resolve the MAC address of a destination by sending a network broadcast. The destination responds to the broadcast with it’s MAC address.
d) Where an IP host resolves a destination IP address by sending a broadcast on the local network and the destination host responds with it’s IP address.
e)There is no such process.

Answer
a) Where an IP host resolves it’s IP address by broadcasting it’s MAC address to the network and a BOOTP server assigns it an IP address.

Choice C describes Address Resolution Protocol (ARP). A host never has to resolve it’s own MAC address. The MAC address is burned into the Network Interface card. When the host is booted the MAC address will be loaded into memory.



7. [OxNx] Which of the following applications requires the connection-oriented layer four protocol, TCP? (Choose all that apply)

a) Telnet
b) FTP
c) TFTP
d) SNMP
e) none of the above

Answer
a) Telnet
b) FTP

TFTP and SNMP use layer 4 UDP.


8. [RxNx] Which of the following are link state Routing Protocols.
(Choose all that apply.)

a) IP
b) OSPF
c) RIP
d) EIGRP
e) IS-IS

Answer
b) OSPF
e) IS-IS