Ujian CCNA

1. What protocol does PPP use to identify the network layer protocol ?
   A. NCP
   B. ISDN
   C. HDLC
   D. LCP
2. You have 10 users plugged into a hub running 10Mbps half-duplex.There is a server connected to the switch running 10Mbps half-duplex as well. How much bandwidth does each host have to the server ?
   A. 100kbps
   B. 1Mbps
   C. 2Mbps
   D. 10Mbps
3. In  a network with dozens of switches, how many root bridges would you have ?
   A. 1
   B. 2
   C. 5
   D.12
4. What does the command routerA(config)#line cons 0 allow you to perform next?
   A. Set the Telnet password.
   B. Shut down the router.
   C. Set your console password.
   D. Disable console connections.
5. How long is IPv6 address?
   A. 32 bits
   B. 128 bytes
   C. 64 bits.
   D. 128 bits.
6. What PPP protocol provides dynamic addressing, authentication, and multilink?
   A. NCP
   B. HDLC
   C. LCP
   D. X.25
7. What command will display the line, protocol, DLCI, and LMI information of an interface?
   A. sh pvc
   B. show interface
   C. show frame-relay pvc
   D. sho runn
8. Which of the following is the valid host range for the subnet on which the IP address 192.168.168.188 255.255.255.192 resides?
   A. 192.168.168.129-190
   B. 192.168.168.129-191
   C. 192.168.168.128-190
   B. 192.168.168.128-192
9. What does the passive command provide to dynamic routing protocols?
   A. Stops an interface from sending or receiving periodic dynamic updates
   B. Stops an interface from sending periodic dynamic updates but not from receiving updates
   C. Stops the router from receiving any dynamic updates
   D. Stops the router from sending any dynamic updates
10. Which protocol does Ping use?
    A. TCP
    B. ARP
    C. ICMP
    D. BootP

Jawaban :            

1. A. Network Control Protocol is used to help identify the Network layer protocol used in the packet.
2. D. Each device has 10Mpbs to the server.
3. A.  You should have only one root bridge per network.
4. C. The command line console 0 places you at a prompt where you can then set your console user- mode password.
5. D. An IPv6 address is 128 bits long, compared to an IPv4 address, which is only 32 bits long.
6. C. Link Control Protocol in the PPP stack provides dynamic addressing, authentication, and multilink.
7. B. The show interface command shows the line, protocol, DLCI, and LMI information of an interface.
8. A. 256-192 =64. 64+64=128. 128+64=192. The subnet is 128, the broadcast address is 191, and the valid host range is the numbers 1i between, or 129 -190.
9. B. The passive command, short for passive –interface, stops regular updates from being sent out an interface. However, the interface can still receive updates.
10. C. ICMP is the protocol at the Network layer that is used to send echo requests and replies.