CISCO ICND 1 Subnet Word Scramble
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Question | Answer |
When Octet Value= 0 How many bits are set to 1? | Bits set to 1 in Octet= 0 |
When Octet Value= 128 How many bits are set to 1? | Bits set to 1 in Octet= 1 |
When Octet Value= 192 How many bits are set to 1? | Bits set to 1 in Octet= 2 |
When Octet Value= 224 How many bits are set to 1? | Bits set to 1 in Octet= 3 |
When Octet Value= 240 How many bits are set to 1? | Bits set to 1 in Octet= 4 |
When Octet Value= 248 How many bits are set to 1? | Bits set to 1 in Octet= 5 |
When Octet Value= 252 How many bits are set to 1? | Bits set to 1 in Octet= 6 |
When Octet Value= 254 How many bits are set to 1? | Bits set to 1 in Octet= 7 |
When Octet Value= 255 How many bits are set to 1? | Bits set to 1 in Octet= 8 |
When Subnet Mask= 255.0.0.0 What is the prefix notation? | Prefix Notation= /8 |
When Subnet Mask= 255.255.0.0 What is the prefix notation? | Prefix Notation= /16 |
When Subnet Mask= 255.255.255.0 What is the prefix notation? | Prefix Notation= /24 |
Class A IP | 1-26 (first octet) |
Class B IP | 128-191 (first octet) |
Class C IP | 192-223 (first octect) |
When Prefix/ CIDR Mask= /30 How many hosts per Subnet? | Host Per Subnet= 2 |
When Prefix/ CIDR Mask= /29 How many hosts per Subnet? | Host per Subnet= 6 |
When Prefix/ CIDR Mask= /28 How many hosts per Subnet? | Host Per Subnet= 14 |
When Prefix/ CIDR Mask= /27 How many hosts per Subnet? | Host Per Subnet= 30 |
When Prefix/ CIDR Mask= /26 How many hosts per Subnet? | Host Per Subnet= 62 |
When Prefix/ CIDR Mask= /25 How many hosts per Subnet? | Host Per Subnet= 126 |
When Prefix/ CIDR Mask= /24 How many hosts per Subnet? | Host Per Subnet= 254 |
When Prefix/ CIDR Mask= /23 How many hosts per Subnet? | Host Per Subnet= 510 |
When Prefix/ CIDR Mask= /22 How many hosts per Subnet? | Host per Subnet= 1022 |
When Prefix/ CIDR Mask= /21 How many hosts per Subnet? | Host Per Subnet= 2046 |
When Prefix/ CIDR Mask= /20 How many hosts per Subnet? | Host Per Subnet= 4094 |
2^h - 2= | Hosts Per Subnet h= host bits (number of 0's left over in the 32 bit binary address) |
2^s= | Subnets Created s=the borrowed bits |
2^0= | 1 |
2^1= | 2 |
2^2= | 4 |
2^3= | 8 |
2^4= | 16 |
2^5= | 32 |
2^6= | 64 |
2^7= | 128 |
2^8= | 256 |
2^9= | 512 |
2^10= | 1024 |
2^11= | 2048 |
2^12= | 4096 |
How many host IP's are practical in a modern network for Ethernet LAN's and VLAN's? | 254 |
How many host IP's are practical in a modern network for Wireless LAN's? | 30-62 |
How many host IP's are practical in a modern network for Point to Point WAN's? | 2 |
How many host IP's are practical in a modern network for Point to Point Ethernet connectivity between routers? | 2 |
How many host IP's are practical in a modern network for Multipoint WAN's? | 6-30 |
How many host IP's are practical in a modern network for Publicly addressed servers in a DMZ? | 6-254 |
Addressing when you stick with default subnet mask? | Classfull (ex. /8, /16, /24) |
When a subnet mask is aplied other than the default subnet mask's of /8, /16, /24? | Classless |
Subnets created when 1 Bit is Borrowed | 2 |
Subnets created when 2 Bits are Borrowed | 4 |
Subnets created when 3 Bits are Borrowed | 8 |
Subnets created when 4 Bits are Borrowed | 16 |
Subnets created when 5 Bits are Borrowed | 32 |
Subnets created when 6 Bits are Borrowed | 64 |
Subnets created when 7 Bits are Borrowed | 128 |
Subnets created when 8 Bits are Borrowed | 256 |
The progression between the subnets | Block Size |
What are the two ways to get the Block Size of a Subnet? | 1. Look where the last "1" in an octet is. The block size is the binary value. 2. Subtract the interesting octet from 256. |
What layer of the OSI model is a Router? | Layer 3 |
What layer of the OSI model is a Switch? | Layer 2 |
Switches provide what? | 1. VLANs to separate users, servers, and stations 2. High Speed Connectivity 3. Redundant Connectivity |
Routers provide what? | 1. Transporation of Packets across different networks 2. WAN and LAN Connectivity 3. Enforcement of Perimeter Security |
Fa is? | FastEthernet- 100mbps |
Gi is? | Gigabit Ethernet- 1000 Mbps or 1 Gbps |
Te is? | 10 Gigabit Ethernet- 10 Gbps |
S is? | Serial WAN link – 64kbps- 2 Mbps |
Which port is used to manage Cisco Routers and Switches? | Con0 (Aux0 only on Routers) |
What kind of cable is used to manage Routers and Switches? | Roll Over Cable |
What are the Primary VPN Technologies | 1. IPsec 2. Secure Sockets Layer (SSL) also know as Web VPN |
What are Logial Topologies? | Logical paths that the signals use to travel from one point on the network to another. |
Describe Bus Topology | all devices receive the signal. They always need a terminator to eventually kill the signal. |
Describe Star Topology | all transmission are through a central point, it has a single point of failure |
Describe Extended-Starn Topology | Like the Star Topology but you add a middle layer to make the topology more scalable |
Describe Ring Topology | signal travels around a ring, massive single point of failure |
Describe Full-Mesh Topology | is highly fault-tolerant, and expensive to implement |
Describe Partial-Mesh | is the trade –off between fault tolerance and cost |
What is DoS | Denial of Service, when someone removes a service to deny service |
What is DDoS | Distributed Denial of Service like DoS but a collection of hackers to attack one spot |
What are the Layers in the OSI model? Start at Layer 1. | 1. Physical 2. Data Link 3. Network 4. Transport 5. Sessions 6. Presentation 7. Application |
Created by:
dacheeves
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