Explanation

There are two types of hypervisors: type 1 and type 2 hypervisor.
In type 1 hypervisor (or native hypervisor), the hypervisor is installed directly on the physical
server. Then instances of an operating system (OS) are installed on the hypervisor. Type 1
hypervisor has direct access to the hardware resources. Therefore they are more efficient than
hosted architectures. Some examples of type 1 hypervisor are VMware vSphere/ESXi, Oracle VM
Server, KVM and Microsoft Hyper-V.
In contrast to type 1 hypervisor, a type 2 hypervisor (or hosted hypervisor) runs on top of an
operating system and not the physical hardware directly. answer 'Type 1 hypervisor runs directly
on the physical hardware of the host machine without relying on the underlying OS' big advantage
of Type 2 hypervisors is that management console software is not required. Examples of type 2
hypervisor are VMware Workstation (which can run on Windows, Mac and Linux) or Microsoft
Virtual PC (only runs on Windows).

Remember, for the wildcard mask, 1's are I DON'T CARE, and 0's are I CARE. So now let's
analyze a simple ACL:
access-list 1 permit 172.23.16.0 0.0.15.255
Two first octets are all 0's meaning that we care about the network 172.23.x.x. The third octet of
the wildcard mask, 15 (0000 1111 in binary), means that we care about first 4 bits but don't care
about last 4 bits so we allow the third octet in the form of 0001xxxx (minimum:00010000 = 16;
maximum: 0001111 = 31).

The fourth octet is 255 (all 1 bits) that means I don't care.
Therefore network 172.23.16.0 0.0.15.255 ranges from 172.23.16.0 to 172.23.31.255.
Now let's consider the wildcard mask of 0.0.0.254 (four octet: 254 = 1111 1110) which means we
only care the last bit. Therefore if the last bit of the IP address is a "1" (0000 0001) then only odd
numbers are allowed. If the last bit of the IP address is a "0" (0000 0000) then only even
numbers are allowed.
Note: In binary, odd numbers are always end with a "1" while even numbers are always end with
a "0".
Therefore in this question, only the statement "permit 10.0.0.1 0.0.0.254" will allow all oddnumbered
hosts in the 10.0.0.0/24 subnet.

The following different OSPF types are compatible with each other:
+ Broadcast and Non-Broadcast (adjust hello/dead timers)
+ Point-to-Point and Point-to-Multipoint (adjust hello/dead timers)
Broadcast and Non-Broadcast networks elect DR/BDR so they are compatible. Point-topoint/
multipoint do not elect DR/BDR so they are compatible.