Mastering CCNA: Comprehensive Guide to Modules 1-7 -Updated Question and Answers [100% Correct] 2025/2026
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CCNA - Cisco Certified Network Associate
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CCNA - Cisco Certified Network Associate
Mastering CCNA: Comprehensive Guide to
Modules 1-7 -Updated Question and Answers
[100% Correct] 2025/2026
What does the OSI model layer 3 handle?
Routing and logical addressing
What does the TCP protocol ensure during data transmission?
Reliable data transfer and error checking
Which ...
Mastering CCNA: Comprehensive Guide to
Modules 1-7 -Updated Question and Answers
[100% Correct] 2025/2026
What does the OSI model layer 3 handle?
Routing and logical addressing
What does the TCP protocol ensure during data transmission?
Reliable data transfer and error checking
Which IP address class is used for multicast communication?
Class D
Which protocol is used to resolve an IP address to a MAC address?
ARP (Address Resolution Protocol)
What is the function of a router in a network?
It forwards data packets between different networks
What does DNS stand for in networking?
Domain Name System
What is the default subnet mask for a Class C IP address?
255.255.255.0
Which layer of the OSI model is responsible for error detection and correction?
Data Link Layer
1
,What does the term "IP address" represent in networking?
A unique identifier for each device on a network
In which layer of the OSI model is the TCP protocol used?
Transport Layer
Which type of cable is used to connect a router to a switch?
Ethernet Cable (Straight-Through)
What does VLAN stand for in networking?
Virtual Local Area Network
What is the purpose of the subnet mask?
It determines the network portion and host portion of an IP address
Which protocol is used to assign dynamic IP addresses to devices on a network?
DHCP (Dynamic Host Configuration Protocol)
What command is used in Cisco devices to check the network configuration?
show ip interface brief
What does the term "collision domain" refer to?
A network segment where data packets can collide
What is the purpose of NAT (Network Address Translation)?
To map private IP addresses to public IP addresses
2
,Which OSI model layer deals with data segmentation and reassembly?
Transport Layer
What protocol is used to secure communication over the internet?
HTTPS (HyperText Transfer Protocol Secure)
What is the role of a switch in a network?
It forwards data based on MAC addresses
What does the term "subnetting" refer to in networking?
Dividing a larger network into smaller subnetworks
What is the function of the ARP cache?
To store mappings of IP addresses to MAC addresses
Which protocol is responsible for transferring files over a network?
FTP (File Transfer Protocol)
What does the term "broadcast domain" mean in networking?
A network segment where a broadcast packet is received by all devices
What is the primary purpose of the application layer in the OSI model?
To provide network services directly to end-user applications
Which protocol does IPv6 use for address autoconfiguration?
SLAAC (Stateless Address Autoconfiguration)
What does the command “ping” do in networking?
3
, It checks the reachability of a device on a network
What is the maximum length for a Category 5e Ethernet cable segment?
100 meters
Which type of address is used to uniquely identify a device on a local network?
MAC address
What is a default gateway in networking?
A router that forwards traffic from a local network to external networks
What does a router use to make forwarding decisions?
Routing tables
What is the primary function of a firewall in networking?
To control incoming and outgoing network traffic
What does the acronym "LAN" stand for?
Local Area Network
Which Cisco command is used to configure an interface's IP address?
ip address [IP address] [subnet mask]
What does the term "throughput" refer to in networking?
The amount of data successfully transmitted in a given period
What is the role of a DHCP server?
To assign IP addresses dynamically to devices on a network
4
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