Networking Basics problems
- 1. 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?
Options- A. 192.168.168.129-190
- B. 192.168.168.129-191
- C. 192.168.168.128-190
- D. 192.168.168.128-192 Discuss
Correct Answer: 192.168.168.129-190
Explanation:
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 in between, or 129-190.
- 2. Which protocol is used to send a destination network unknown message back to originating hosts?
Options- A. TCP
- B. ARP
- C. ICMP
- D. BootP Discuss
Correct Answer: ICMP
Explanation:
ICMP is the protocol at the Network layer that is used to send messages back to an originating router.
- 3. What does the passive command provide to dynamic routing protocols?
Options- 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. Discuss
Correct Answer: Stops an interface from sending periodic dynamic updates but not from receiving updates.
Explanation:
The
passive command, short for passive-interface, stops regular updates from being sent out an interface. However, the interface can still receive updates.
- 4. Which protocol does DHCP use at the Transport layer?
Options- A. IP
- B. TCP
- C. UDP
- D. ARP Discuss
Correct Answer: UDP
Explanation:
User Datagram Protocol is a connection network service at the Transport layer, and DHCP uses this connectionless service.
- 5. Which router command allows you to view the entire contents of all access lists?
Options- A. show all access-lists
- B. show access-lists
- C. show ip interface
- D. show interface Discuss
Correct Answer: show access-lists
Explanation:
To see the contents of all access lists, use the
show access-lists command.
- 6. Which command is used to determine if an IP access list is enabled on a particular interface?
Options- A. show access-lists
- B. show interface
- C. show ip interface
- D. show interface access-lists Discuss
Correct Answer: show ip interface
Explanation:
The
show ip interface command will show you if any outbound or inbound interfaces have an access list set.
- 7. How many broadcast domains are created when you segment a network with a 12-port switch?
Options- A. 1
- B. 2
- C. 5
- D. 12 Discuss
Correct Answer: 1
Explanation:
By default, switches break up collision domains but are one large broadcast domain.
- 8. Which command is used to upgrade an IOS on a Cisco router?
Options- A. copy tftp run
- B. copy tftp start
- C. config net
- D. copy tftp flash Discuss
Correct Answer: copy tftp flash
Explanation:
The
copy tftp flash command places a new file in flash memory, which is the default location for the Cisco IOS in Cisco routers.
- 9. If you wanted to delete the configuration stored in NVRAM, what would you type?
Options- A. erase startup
- B. erase nvram
- C. delete nvram
- D. erase running Discuss
Correct Answer: erase startup
Explanation:
The command
erase startup-config deletes the configuration stored in NVRAM.
- 10. What does the command routerA(config)#line cons 0 allow you to perform next?
Options- A. Set the Telnet password.
- B. Shut down the router.
- C. Set your console password.
- D. Disable console connections. Discuss
Correct Answer: Set your console password.
Explanation:
The command
line console 0 places you at a prompt where you can then set your console user-mode password.
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