OSI Model
Port Numbers
Subnetting
Cisco IOS
Potent Potables
100
Ethernet is on this layer
What is Physical (1)
100
TCP 80
What is HTTP
100
Name all three default subnet masks
What are A (255.0.0.0), B (255.255.0.0), C (255.255.255.0)
100
These are the names of the devices' config files
running-config and startup-config
100
This protocol is Cisco proprietary and collects information about directly attached devices
What is CDP
200
Telnet is on this layer
What is the Application Layer (7)
200
FTP
What is TCP 21 (and technically 20 for data)
200
Explain CIDR and give an example
What is ____
200
This command displays the current configuration
What is "show running-config"
200
This command allows you to use the first subnet as addressable range
What is "ip subnet-zero"
300
Name two protocols you will find in the Transport Layer
TCP, UDP, PPTP, L2TP
300
TCP 25
What is SMTP
300
If you wanted at least 120 hosts and 2 networks in a Class C network, which subnet mask would you use?
What is 255.255.255.128 or /25
300
Name the three IOS modes, explain which each one does along with what it looks like
What are User mode >, Privileged Mode # (or Global Exec or Enable), Global Config Mode (config)#
300
T568B and T568A
400
Frames are only found at this layer
What is Data Link
400
DNS
What is 53 UDP and TCP
400
Explain VLSM and give an example
What is ____
400
These commands turn on the 'enable' and 'telnet' passwords
What is "enable secret rabbles" and "line vty 0 4, password rabbles, login"
400
Max length of a CAT6 cable
What is 100m or 330ft
500
Name each layer, in order
Layer 1: Physical Layer
Layer 2: Data Link Layer
Layer 3: Network Layer
Layer 4: Transport Layer
Layer 5: Session Layer
Layer 6: Presentation Layer
Layer 7: Application Layer
Layer 2: Data Link Layer
Layer 3: Network Layer
Layer 4: Transport Layer
Layer 5: Session Layer
Layer 6: Presentation Layer
Layer 7: Application Layer
500
TCP 22 and 23
What is SSH (22) and Telnet (23)
500
Network Address: 154.231.0.0
Subnets Required: 53
Max # hosts/subnet: ____
Subnet Mask: ____
1st Available Host Address on Subnet 2: ____
Subnets Required: 53
Max # hosts/subnet: ____
Subnet Mask: ____
1st Available Host Address on Subnet 2: ____
Max # hosts/subnet: 1022
Subnet Mask: 255.255.252.0
1st Available Host Address on Subnet 2: 154.231.8.1
Subnet Mask: 255.255.252.0
1st Available Host Address on Subnet 2: 154.231.8.1
500
Explain the Cisco IOS password reset method
Configuration Register, Cntl+Break, confreg 0x2142 or config-register 0x2142
500
This protocol uses a hello packet
What is ICMP