IPV4 Addressing
Which part of an IPv4 address identifies the host within a network?
Host portion
How many hexadecimal blocks make up a full IPv6 address?
8
Which ICMP message confirms two-way connectivity between hosts?
Echo Reply
VLSM allows subnets to use different what?
Subnet masks
Default subnet mask for a Class B address.
255.255.0.0
How many total addresses exist in a /28 network?
16
What IPv6 address type is automatically configured when IPv6 is enabled on an interface?
Link-local address
What does ICMP use the TTL field for?
To detect routing loops or expired packets
Main purpose of VLSM in IP addressing.
Reduce wasted addresses
What subnet mask corresponds to a /27 prefix?
255.255.255.224
Which address type cannot be assigned to a host: 192.168.1.0, 192.168.1.1, or 192.168.1.255?
192.168.1.0 and 192.168.1.255
Convert the IPv6 address 2001:0DB8:0000:0000:0000:0000:0000:0044 into its compressed form.
2001:DB8::44
If pings succeed but applications fail, what can you infer?
Layer 3 connectivity is fine; problem exists at higher layers
CIDR notation for subnet mask 255.255.255.240
/28
What is the network address for host 172.16.9.73/20?
172.16.0.0
In 172.16.35.128/20, what is the network address?
172.16.32.0
Which IPv6 address type is routable on the public Internet?
Global unicast
Which ICMP message helps trace the route to a destination?
Time Exceeded
How many subnets are created when borrowing 4 bits from the host portion?
16
In network 192.168.16.0/20, what is the last valid host address?
192.168.31.254
Given IP 10.1.5.77/22, what is the broadcast address?
10.1.7.255
An IPv6 host can reach local devices but not remote ones. What configuration is missing?
Default gateway (IPv6 default route)
When a router drops packets because no route exists, which ICMP message does it send?
Destination Unreachable
Number of /26 subnets in 192.168.1.0/24
4
Determine the broadcast address for 10.20.12.33/21.
10.20.15.255