Questions for CCNA

More Sample Questions for CCNA

Before planning to take the CCNA exam, the main thing that you have to consider is how much time you can spend reading for this exam. Certify4sures’ study guides can really help you decrease significantly the amount of time you need to spend preparing for your CCNA exam. Below you will find a few questions for the CCNA exam and their respective answers and explanations.

All the questions below are 100% real questions from the actual CCNA exam. As you can see all the questions do not contain only the correct answer, but also an extremely comprehensive answer that will help you understand much better the examination materials.

Sample questions for CCNA no: 1
A worldwide company wants to design an IP addressing scheme to support a local net. The enterprise wants a minimum of 300 sub-networks and a maximum of 50 host addresses per subnet. Working with only one Class B address, which of the subnet masks below will support a suitable addressing scheme? (Select two.)
A. 255.255.255.0
B. 255.255.255.128
C. 255.255.252.0
D. 255.255.255.224
E. 255.255.255.192
F. 255.255.248.0

Answer: B, E
Explanation:
Subnetting is used to cut the net into small more effective subnets and stop high rates of Ethernet packet collision in a large net. Subnets can be organized hierarchically, with the corporate network address space partitioned into a tree-like structure. Routers are used to manage traffic and create borders between subnets.
A routing prefix is the sequence of leading bits of an IP address that precede the portion of the
address used as host identifier. In IPv4 nets, the routing prefix is often called "subnet mask", which is a bit mask covering the number of bits used in the prefix. An IPv4 subnet mask is commonly expressed in quad-dotted decimal representation, for example 255.255.255.0 is the subnet mask for the 192.168.1.0 network with a 24-bit routing prefix (192.168.1.0/24).

Sample questions for CCNA no: 2
You are working as a network engineer for a nationwide firm. A new network administrator asks you which are valid modes for a switch port used as a VLAN trunk? What will you tell him? (Choose three.)
A. transparent
B. auto
C. on
D. desirable
E. blocking
F. forwarding

Answer: B, C, D
Explanation:
Both the auto and on modes can be automatically switched to the desirable mode based on the topology. A trunk port can be configured as one of the following 5 different modes: on, off, desirable, auto, or nonegotiate.

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