CCNA - NETWORK FUNDAMENTALS EXAM QUESTIONS

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CCNA - NETWORK FUNDAMENTALS EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -100 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: What is the subnet mask for 192.168.1.0/24?

Answer:

255.255.255.0

Question 2: What does the command "no IP domain-lookup" do?

Answer:

Stops the IOS from trying to find a domain name that was typed into the command line if it was typed incorrectly. It basically disables DNS name resolution so you don't have to wait for the CLI to error out.Question 3: How do you get from user exec mode to the next higher permission level to configure a Cisco device?

Answer:

With the enable command.Question 4: How can you view information about a specific port on a Cisco device?

Answer:

Use the command "show interface fa0/24" to see the details about port 24.

Question 5: What is NAT overload, also known as Port Address Translation?

Answer:

The commonly used type of NAT where many private IP addresses are mapped to one, publically routable IP address. Port numbers are used to distinguish traffic flows through the router.Question 6: What are 2 options for Cisco devices that will provide centralized authentication services?

Answer:

RADIUS and Terminal Access Controller Access, or TACACS+.

Question 7: How many collision domains are there when using hubs?

Answer:

There is one collision domain since hubs rebroadcast all signals they receive out of every single port except the port the signal was received on.Question 8: In order to connect separate LAN's to each other, what do routers connect to?

Answer:

WAN, or Wide Area Networks, such as the Internet, leased lines, etc.Question 9: How do you advance through help options that are given when using the question mark on the CLI?

Answer:

Pressing the Enter key advances one line at a time, while pressing the spacebar advances an entire page at a time.

Question 10: How do you create a domain name from the Cisco CLI?

Answer:

From config mode, enter the command "ip domain-name aaronpotts.com" to create the domain aaronpotts.com on that device.

Question 11: What is the subnet mask for 192.168.1.0/27?

Answer:

255.255.255.224

Question 12: What is the purpose behind setting the "login" command for a console connection to a Cisco device?

Answer:

The "login" command is a required configuration command to enable password checking at login.Console authentication requires both the password and the login commands to work.Question 13: What is the initial CLI login that will be met when logging into a Cisco device?

Answer:

A new login will be in user exec mode and the prompt will be a greater than sign, such as >.

Question 14: What is the subnet mask for 192.168.1.0/26?

Answer:

255.255.255.192

Question 15: Name 3 reasons to use a Next Generation Firewall.

Answer:

Prevent breaches, Identify compromised machines, and Receive alerts.

Question 16: What is Cisco's DNA center?

Answer:

A single interface that can be used to manage a network, deploy workflows on a network, and automate provisioning and change management throughout a network.Question 17: How can you automatically convert an IPv6 address to its EUI-64 format?

Answer:

Go to the interface that you are going to configure the IPv6 address on and use the command "ipv6 address 2001::/64 eui-64". Regardless of what IPv6 address is used, the "eui-64" command flips the 7th bit of the address.Question 18: What are the 2 primary differences between orange, multimode fiber optic cables and yellow, single mode cables?

Answer:

Multimode fiber optics are used for shorter distances and are generally cheaper. Single mode fiber optics are used for longer distances, and are usually more expensive.

Question 19: When creating an enable password on a Cisco device, is that password universal for the entire device?

Answer:

No, each connection needs to have its own enable password, such as a console connection, an SSH connection, etc. The passwords must be set for every method of accessing that device.Question 20: How can looking at the details of an interface help with troubleshooting?

Answer:

You can look for things like the number of input errors to see if there is an on-going problem with that interface.

Question 21: Describe Static NAT, also known as One-to-One NAT.

Answer:

When a specific host inside a network has their private, internal IP address changed inside the router to another specific, globally routable IP address.Question 22: How does the TCP/IP model Application layer compare to the OSI model Application layer?

Answer:

In the OSI model, the top 3 layers are the Session, Presentation, and Application layers. In the TCP/IP model, all 3 of those layers are combined into the Application layer.

Question 23: How do you create a username from the Cisco CLI?

Answer:

From config mode, enter the command "username admin secret " followed by the password that you want to use. That would set the username to admin.

Question 24: What is the subnet mask for 192.168.1.0/30?

Answer:

255.255.255.252

Question 25: What is the command to view all IPv6 information about the interfaces on a Cisco device?

Answer:

"show ipv6 interface brief" will give an abbreviated view, and the full command "show ipv6 interface" will give a detailed view.