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CCNA Questions and Answers (Q&A)

What are the two functions of a router?
H. Martin, Content Writer
Answered: Sep 16, 2020
A router is a networking device that forwards data packets between computer networks. The two main functions of a router are it connects multiple IP networks and determines the best path to send...Read More

11 Answers

7463 views
How many hosts per network, and total networks do you get once subnetted?
John Smith
Answered: Jan 12, 2025
2 Hosts and 64 Subnets
193.103.20.0 Need 50 Networks 128 64 32 16 8 4 2 1 0 0 1 1 0 0 1 0 = 50 in binary Need to borrow 6 bits for of Networks New Subnet Mask = 255.255.255.11111100...Read More

2 Answers

3019 views
What layer of the OSI model does possess Telnet, FTP, and SMTP?
John Smith
Answered: Jan 12, 2025
Application layer-1.1 application layer: provides a means for the user to access information on the network through an application. this layer is the main interface for the user to interact with...Read More

3 Answers

2969 views
Is the following true or false? Subnet the IP Address 203.10.93.0 /24 into 30 Subnets. 203.10.93.30 a valid Host ID after subnetting.
John Adney
Answered: Jun 28, 2017
We can't subnet a network in 30, however it's possible to subnet it in 32. In this case, considering it is an IP Address class C (/24), we have to borrow 5 bitsin the 4th octet, that is, the IP...Read More

6 Answers

2786 views
Is 203.10.93.30 a valid Host ID after subnetting?
AP_Jake
Answered: Jan 12, 2025
Yes

203.10.93.0 Need 30 Networks 128 64 32 16 8 4 2 1 0 0 0 1 1 1 1 0 = 30 in binary Borrow 5 Bits for of Networks New Subnet Mask = 255.255.255.11111000 (248) or /29 ^...Read More

5 Answers

2576 views
Which address does an NIC use when deciding whether to accept a frame?
R. Jones, Student
Answered: Sep 21, 2020
The address used is Destination MAC address. (MAC address) means media access control address; it is an exceptional identifier given to a (NIC) network interface controller for use as a network...Read More

3 Answers

2378 views
What are the types of networking flow control?
John Smith
Answered: Jan 12, 2025
A. buffering
2. C. windowing
3. D. congestion avoidance

Three types of flow control are buffering, windowing & congestion avoidance: + Buffering: If a device receives packets too...Read More

2 Answers

2262 views
Which advantage does the store-and-forward switching method have compared with the cut-through switching method?
T. Lopez, Biology student
Answered: May 17, 2019
The correct answer to this question is Frame error checking. Store-and-forward switching is the method in which the whole frame is stored into internal memory. The structure is checked for errors...Read More

3 Answers

2240 views
Which layer of the OSI reference model is responsible for ensuring reliable end-to-end delivery of data?
Danny R. Glover, Editor
Answered: Jul 11, 2018
The answer to this is Transport. The transport layer is the 4th layer in the OSI Model. This is responsible for the end-to-end communication between the source to the destination. This will make...Read More

3 Answers

2016 views
What is the IP range of the last available network once you subnet?
AP_Jake
Answered: Jan 12, 2025
199.2.1.224 - 199.2.1.255

199.2.1.0 Need 5 Networks 128 64 32 16 8 4 2 1 0 0 0 0 0 0 1 0 1 = 5 in binary Need to borrow 3 bits for of Networks New Subnet Mask =...Read More

2 Answers

1902 views
What characteristics describe the native VLAN?
K. Myers, Blogger
Answered: Feb 13, 2019
A VLAN (also known as a Virtual Lan) is defined as a domain that is isolated and partitioned inside a computer network. The native VLAN is the only VLAN in a trunk that is not tagged, meaning...Read More

3 Answers

1823 views
Which IPv6 address is valid?
L. Hawkes, Teacher
Answered: Jun 28, 2018
The answer for this is letter A. A has an ipv6 address that states 2031:0:130F:9C0:876A:130B. The other addresses are not valid because of different reasons. Right off the bat, we can see that D...Read More

4 Answers

1759 views
What is the new Subnet Mask and what is the Increment? Subnet the Class B IP Address 130.13.0.0 into 500 Subnets. 
John Smith
Answered: Jan 12, 2025
Subnet Mask 255.255.255.128 with an Increment of 128

130.13.0.0 Need 500 Networks 128 64 32 16 8 4 2 1 . 128 64 32 16 8 4 2 1 0 0 0 0 0 0 0 1 . 1 1 1 1 0 1 0 0 = 500 in binary Need...Read More

5 Answers

1735 views
What is the default Syslog facility level?
W. Pratt, Marketing Analyst
Answered: Apr 03, 2019
The answer is Local7. The default Syslog facility level is Local4 that corresponds 20 on ASA. You can see the facilities on the Syslog server Local0 to Local7 and the default is Local4. By using...Read More

2 Answers

1718 views
Why are port numbers included in the TCP header of a segment?
Olive landon, Health science specialist
Answered: Sep 21, 2020
The reason why port numbers are included in the TCP header of a segment is so that the TCP header can easily determine which layer 3 protocol should be used to encapsulate the data. TCP is the...Read More

4 Answers

1624 views

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