Chapter 8 - Supplement - Sheet1 (1) Flashcards
Length of a subnet mask, in bits
32 bits
Default subnet mask for a Class A network
255.0.0.0
Default subnet mask for a Class B network
255.255.0.0
Default subnet mask for a Class C network
255.255.255.0
CIDR
Classless inter-domain routing. The method that ISPs use to allocate a number of addresses to a company or home connection
/25 How many subnets?
2
/25 How many hosts per subnet?
126
/25 What are teh valid subnets?
0, 128
/25 What’s the broadcast address for each subnet?
127, 255
/25 What are the valid hosts?
1-126 ; 129 - 254
/26 How many subnets?
4
/26 How many hosts per subnet?
62
/26 What are teh valid subnets?
0, 64, 128, 192
/26 What’s the broadcast address for each subnet?
63, 127, 191, 255
What is the subnet, broadcast address, and valid host range for IP 192.168.10.33 with subnet mask 255.255.255.224?
Subnet = 192.168.10.32; Broadcast Address = 192.168.10.63; Host Range = 33-62?
PING
Packet InterNet Groper - Uses Internet Control Message Protocol (ICMP) echo request and replies to test if a host IP stack is initialized and alive on the network.
Traceroute
Displays a list of routers on a path to a network destination by using time to live (TTL) and ICMP error messages. Will work on a router, MAC, or linux. Not Windows
Tracert
Some as traceroute, but for Windows
arp -a
Displays IP-to-MAC-address mappings on a Windows PC
ipconfig /all
Used only from DOS prompt. Shows the PC network config
