Networking Basics
What is a network?
A collection of computers, servers, mainframes, network devices, peripherals, or other devices connected to one another to allow the sharing of data.
How many layers are there in the OSI model?
Seven.
What is the purpose of an IP address in a network?
To uniquely identify a device on a network.
What type of cable is used to connect a computer to a switch?
Ethernet cable.
What does IOS stand for in Cisco networks?
Internetwork Operating System.
What is the purpose of a router in a network?
To route packets of data between different networks.
What layer of the OSI model is responsible for delivering packets from the source host to the destination host?
The Network layer.
What are the two types of IP addresses in IPv4?
Static and dynamic.
What cable type is used to connect two switches directly?
A crossover cable.
What command would you use to view the current configuration on a Cisco device?
show running-config
Name two devices that might be found in a LAN (Local Area Network).
Switches and access points.
In the TCP/IP model, which layer corresponds to the OSI model’s application, presentation, and session layers?
The Application layer.
Define the term "subnet mask."
A subnet mask is used to divide an IP address into network and host parts.
Name a connector commonly used for fiber optic cables.
SC or LC connectors.
How would you save the current configuration to the startup configuration in Cisco IOS?
write memory or copy running-config startup-config
What does the acronym LAN stand for?
Local Area Network.
What does OSI stand for?
Open Systems Interconnection.
What does DHCP stand for and what is its purpose?
Dynamic Host Configuration Protocol; it assigns IP addresses automatically to devices in a network.
What does UTP stand for?
Unshielded Twisted Pair.
What command enables a higher privilege level in Cisco IOS?
enable
What is a WAN and how does it differ from a LAN?
WAN stands for Wide Area Network and it spans a broader geographical area than a LAN.
Which OSI layer is responsible for error-free delivery of data?
The Transport layer.
Explain the difference between IPv4 and IPv6 addresses.
IPv4 addresses are 32-bit numeric addresses written in decimal format, while IPv6 addresses are 128-bit hexadecimal addresses.
What is the maximum distance for a Cat6 cable in a 10Gbps network?
55 meters.
Describe what the command interface FastEthernet0/1 does in a Cisco switch.
It enters the interface configuration mode for the FastEthernet0/1 interface.