CCNA ( Network Basic Question 15 )

Which protocol is used to send a destination network unknown message back to originating hosts?

A. TCP

B. ARP

C. ICMP

D. BootP







Answer & Explanation
Answer: Option C


Explanation:


ICMP (Internet Control Message Protocol )is the protocol at the Network layer that is used to send messages back to an originating router.

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CCNA ( Network Basic Question 14 )

 
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.

Answer & Explanation
Answer: Option B

Explanation:

The passive command, short for passive-interface, stops regular updates from being sent out an interface. However, the interface can still receive updates.

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CCNA ( Network Basic Question 13 )

Where is a hub specified in the OSI model?

A. Session layer

B. Physical layer

C. Data Link layer

D. Application layer

Answer & Explanation
Answer: Option B

Explanation:

Hubs regenerate electrical signals, which are specified at the Physical layer.

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CCNA ( Network Basic Question 12 )

Which command is used to determine if an IP access list is enabled on a particular interface?



A. show access-lists

B. show interface


C. show ip interface

D. show interface access-lists


Answer & Explanation
Answer: Option C

Explanation:

The show ip interface command will show you if any outbound or inbound interfaces have an access list set.

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CCNA ( Network Basic Question 11 )

Which protocol does DHCP use at the Transport layer?

A. IP

B. TCP

C. UDP

D. ARP

Answer & Explanation
Answer: Option C

Explanation:

User Datagram Protocol is a connection network service at the Transport layer, and DHCP uses this connectionless service.

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Network Basic Question 10( CCNA )

Which of the following commands will allow you to set your Telnet password on a Cisco router?

A. line telnet 0 4

B. line aux 0 4

C. line vty 0 4

D. line con 0

Answer & Explanation
Answer: Option C

Explanation:

The command line vty 0 4 places you in a prompt that will allow you to set or change your Telnet password.

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Network Basic Question 9

What protocol does PPP use to identify the Network layer protocol?

A. NCP

B. ISDN

C. HDLC


D. LCP






Answer & Explanation


Answer: Option A

Explanation:

Network Control Protocol is used to help identify the Network layer protocol used in the packet.

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Network Basic Question 8

To back up an IOS, what command will you use?

A. backup IOS disk

B. copy ios tftp

C. copy tftp flash

D. copy flash tftp

Answer & Explanation
Answer: Option D

Explanation:

The command copy flash tftp will prompt you to back up an existing IOS in flash to a TFTP host.

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Network Basic Question 7

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

D. 192.168.168.128-192

Answer & Explanation
Answer: Option A

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.

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Network Basic Question 6

Which WLAN IEEE specification allows up to 54Mbps at 2.4GHz?

A. A

B. B

C. G

D. N




Answer & Explanation

Answer: Option C

Explanation:

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.

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Network Basic Question 5

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. 100 kbps

B. 1 Mbps

C. 2 Mbps

D. 10 Mbps




Answer & Explanation


Answer: Option D

Explanation:

Each device has 10 Mbps to the server.

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Network Basic Question 4

What command is used to create a backup configuration?

A. copy running backup

B. copy running-config startup-config

C. config mem

D. wr mem



Answer & Explanation
Answer: Option B

Explanation:

The command to back up the configuration on a router is copy running-config startup-config.

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Network Basic Question 3

What are the two main types of access control lists (ACLs)?


Standard
IEEE
Extended
Specialized

A. 1 and 3

B. 2 and 4

C. 3 and 4

D. 1 and 2

Standard ACL

Extended ACL

Answer & Explanation:


Answer: Option A

Explanation:

Standard and extended access control lists (ACLs) are used to configure security on a router.

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Network Basic Question 2

What flavor of Network Address Translation can be used to have one IP address allow many users to connect to the global Internet?

A. NAT
B. Static
C. Dynamic
D. PAT

Answer: Option D



Explanation:

Port Address Translation (PAT) allows a one-to-many approach to network address translation.

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Network Basic Question

How long is an IPv6 address?

A. 32 bits

B. 128 bytes

C. 64 bits

D. 128 bits

Answer:    Option D

Explanation:

          An IPv6 address is 128 bits long.

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