Ch 7: Virtualization and Cloud Computing Flashcards
Which type of cloud service model involves hardware services that are provided virtually, including network infrastructure devices such as virtual servers?
IaaS
What cloud service model involves providing applications through an online user interface, providing for compatibility with a multitude of different operating systems and devices?
SaaS
What type of scenario would be best served by using a Platform as a Service (PaaS) cloud model?
A group of developers needs access to multiple operating systems and the runtime libraries that the OS provides.
When using public and private keys to connect to an SSH server from a Linux device, where must your public key be placed before you can connect?
In an authorization file on the host where the SSH server is.
The combination of a public key and a private key are known by what term below?
key pair
What security encryption protocol requires regular re-establishment of a connection and can be used with any type of TCP/IP transmission?
IPsec
Internet Protocol Security: A layer 3 protocol that defines encryption, authentication, and key management for TCP/IP transmissions.
At what layer of the OSI model does the IPsec encryption protocol operate?
Network layer
The PPP headers and trailers used to create a PPP frame that encapsulates Network layer packets vary between 8 and 10 bytes in size due to what field?
FCS
Frame Check Sequence: The field in a frame responsible for ensuring that data carried by the frame arrives intact.
When using a site-to-site VPN, what type of device sits at the edge of the LAN and establishes the connection between sites?
VPN gateway
Amazon and Rackspace both utilize what virtualization software below to create their cloud environments?
Citrix Xen
What open-source VPN protocol utilizes OpenSSL for encryption and has the ability to possibly cross firewalls where IPsec might be blocked?
OpenVPN
VMware Player and Linux KVM are both examples of what type of hypervisor?
Type 2 hypervisor
Which statement regarding the use of a bridged mode vNIC is accurate?
The vNIC will use its own IP address on the physical LAN.
When is it appropriate to utilize the NAT network connection type?
Whenever the VM does not need to be access at a known address by other network nodes.
By default, what network connection type is selected when creating a VM in VMware, VirtualBox, or KVM?
NAT mode
Network address translation
Which statement regarding the IKEv2 tunneling protocol is accurate?
IKEv2 offers fast throughput and good stability when moving between wireless hotspots.
The use of certificate authorities to associate public keys with certain users is known by what term?
public-key infrastructure
What is NOT a potential disadvantage of utilizing virtualization?
Virtualization software increases the complexity of backups, making creation of usable backups difficult.
A vSwitch (virtual switch) or bridge is a logically defined device that operates at what layer of the OSI model?
Layer 2
Which of the following virtualization products is an example of a bare-metal hypervisor?
Citrix XenServer
In a software defined network, what is responsible for controlling the flow of data?
SDN controller
What term is used to describe a space that is rented at a data center facility by a service provider?
point of presence (PoP)
Which of the following statements regarding the Point-to-Point (PPP) protocol is NOT accurate?
PPP can support strong encryption, such as AH or ESP.
Why is the telnet utility a poor choice for remote access to a device?
It provides poor authentication and no encryption.
