Networking Basics(Networking ) Questions and Answers

Question 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?
  1.    192.168.168.129-190
  2.    192.168.168.129-191
  3.    192.168.168.128-190
  4.    192.168.168.128-192
Explanation:-
Answer: Option A. -> 192.168.168.129-190
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.
Question 2. Which WLAN IEEE specification allows up to 54Mbps at 2.4GHz?
  1.    A
  2.    B
  3.    G
  4.    N
Explanation:-
Answer: Option C. -> G
IEEE 802.11B is 2.4GHz, but with a maximum of only 11Mbps. IEEE 802.11G is in the 2.4GHz range, with a top speed of 54Mbps.
Question 3. Which of the following commands will allow you to set your Telnet password on a Cisco router?
  1.    line telnet 0 4
  2.    line aux 0 4
  3.    line vty 0 4
  4.    line con 0
Explanation:-
Answer: Option C. -> line vty 0 4
The command line vty 0 4 places you in a prompt that will allow you to set or change your Telnet password.
Question 4. To back up an IOS, what command will you use?
  1.    backup IOS disk
  2.    copy ios tftp
  3.    copy tftp flash
  4.    copy flash tftp
Explanation:-
Answer: Option D. -> copy flash tftp
The command copy flash tftp will prompt you to back up an existing IOS in flash to a TFTP host.
Question 5. What protocol does PPP use to identify the Network layer protocol?
  1.    NCP
  2.    ISDN
  3.    HDLC
  4.    LCP
Explanation:-
Answer: Option A. -> NCP
Network Control Protocol is used to help identify the Network layer protocol used in the packet.
Question 6. How long is an IPv6 address?
  1.    32 bits
  2.    128 bytes
  3.    64 bits
  4.    128 bits
Explanation:-
Answer: Option D. -> 128 bits
An IPv6 address is 128 bits long.
Question 7. What command is used to create a backup configuration?
  1.    copy running backup
  2.    copy running-config startup-config
  3.    config mem
  4.    wr mem
Explanation:-
Answer: Option B. -> copy running-config startup-config
The command to back up the configuration on a router is copy running-config startup-config.
Question 8. 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?
  1.    100 kbps
  2.    1 Mbps
  3.    2 Mbps
  4.    10 Mbps
Explanation:-
Answer: Option D. -> 10 Mbps
Each device has 10 Mbps to the server.
Question 9. What are the two main types of access control lists (ACLs)?
1. Standard
2. IEEE
3. Extended
4. Specialized
  1.    1 and 3
  2.    2 and 4
  3.    3 and 4
  4.    1 and 2
Explanation:-
Answer: Option A. -> 1 and 3
Standard and extended access control lists (ACLs) are used to configure security on a router.
Question 10. What flavor of Network Address Translation can be used to have one IP address allow many users to connect to the global Internet?
  1.    NAT
  2.    Static
  3.    Dynamic
  4.    PAT
Explanation:-
Answer: Option D. -> PAT
Port Address Translation (PAT) allows a one-to-many approach to network address translation.
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