Chapter 7 - Virtualization and Cloud Computing

false

A Type 2 hypervisor installs on a computer before any OS, and is therefore called a bare-metal hypervisor.

C

The use of certificate authorities to associate public keys with certain users is known by what term? A. public-key organization B. symmetric identification C. public-key infrastructure D. certified infrastructure

false

FTPS (FTP Security or FTP Secure) and SFTP (Secure FTP) are two names for the same protocol.

true

Digital certificates are issued, maintained, and validated by an organization called a certificate authority (CA).

B

VMware Player and Linux KVM are both examples of what type of hypervisor? A. barebones hypervisor B. Type 2 hypervisor C. bare-metal hypervisor D. Type 1 hypervisor

B

Which file transfer protocol has no authentication or security for transferring files, uses UDP, and requires very little memory to use? A. FTP Secure (FTPS) B. Trivial FTP (TFTP) C. Secure FTP (SFTP) D. File Transfer Protocol (FTP)

true

Office 365 is an example of an SaaS implementation with a subscription model.

false

After L2TP establishing a VPN tunnel, GRE is used to transmit L2TP data frames through the tunnel.

C

In a software defined network, what is responsible for controlling the flow of data? A. flow director B. SDN switch C. SDN controller D. vRouter

B

The combination of a public key and a private key are known by what term below? A. key set B. key pair C. key team D. key tie

D

What security encryption protocol requires regular re-establishment of a connection and can be used with any type of TCP/IP transmission? A. SSL B. L2TP C. TLS D. IPsec

false

The HTTPS (HTTP Secure) protocol utilizes the same TCP port as HTTP, port 80.

C

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? A. FEC B. priority C. FCS D. encryption

true

The Virtual Network Computing (VNC) application uses the cross-platform remote frame buffer (RFB) protocol.

true

An enterprise-wide VPN can include elements of both the client-to-site and site-to-site models.

true

A community cloud is a service shared between multiple organizations, but not available publicly.

C

A vSwitch (virtual switch) or bridge is a logically defined device that operates at what layer of the OSI model? A. Layer 4 B. Layer 1 C. Layer 2 D. Layer 7

A

Amazon and Rackspace both utilize what virtualization software below to create their cloud environments? A. Citrix Xen B. Oracle VirtualBox C. Parallels D. VMware vSphere

C

At what layer of the OSI model does the IPsec encryption protocol operate? A. Application layer B. Transport layer C. Network layer D. Physical layer

C

By default, what network connection type is selected when creating a VM in VMware, VirtualBox, or KVM? A. host-only mode B. bridged mode C. NAT mode D. lockdown mode

D

In order to generate a public and private key for use with SSH, what command line utility should you use? A. gpg --ssh B. ssh-newkey C. key-generate D. ssh-keygen

true

PPP can support several types of Network layer protocols that might use the connection.

B

Regarding VNC (Virtual Network Computing or Virtual Network Connection), what statement is accurate? A. VNC uses the Remote Desktop Protocol (RDP). B. VNC is open source, allowing companies to develop their own software based on VNC. C. VNC is a standard developed by Microsoft and used by Windows Remote Desktop. D. VNC is faster than Remote Desktop, and requires less network bandwidth.

D

What cloud service model involves providing applications through an online user interface, providing for compatibility with a multitude of different operating systems and devices? A. XaaS B. PaaS C. IaaS D. SaaS

A

What is NOT a potential disadvantage of utilizing virtualization? A. Virtualization software increases the complexity of backups, making creation of usable backups difficult. B. Increased complexity and administrative burden can result from the use of virtual machines. C. Multiple virtual machines contending for finite resources can compromise performance. D. Licensing costs can be high due to every instance of commercial software requiring a separate license.

A

What open-source VPN protocol utilizes OpenSSL for encryption and has the ability to possibly cross firewalls where IPsec might be blocked? A. OpenVPN B. Generic Routing Encapsulation (GRE) C. Layer 2 Tunneling Protocol (L2TP) D. Point-to-Point Tunneling Protocol (PPTP)

C

What special enterprise VPN supported by Cisco devices creates VPN tunnels between branch locations as needed rather than requiring constant, static tunnels? A. Auto Switched VPN Service B. Dynamic SmartVPN C. Dynamic Multipoint VPN D. Symmetric VPN Autodial

B

What statement regarding the SSH (Secure Shell) collection of protocols is accurate? A. SSH provides a graphical view of the remote computer. B. SSH supports port forwarding. C. SSH does not protect against IP spoofing. D. SSH does not protect against DNS spoofing.

B

What term is used to describe a space that is rented at a data center facility by a service provider? A. service location (SL) B. point of presence (PoP) C. central service point (CSP) D. locally exchanged data point (ledp)

B

What type of scenario would be best served by using a Platform as a Service (PaaS) cloud model? A. A small organization needs to have high availability for their web server. B. A group of developers needs access to multiple operating systems and the runtime libraries that the OS provides. C. An organization wishes to gain access to applications through an online user interface, while maintaining compatibility across operating systems. D. An organization needs to have a hosted virtual network infrastructure for their services, which are run on virtual machines.

C

When is it appropriate to utilize the NAT network connection type? A. Only when the VM requires an IP address on the physical LAN. B. Only if the VM does not need to communicate with the host PC. C. Whenever the VM does not need to be access at a known address by other network nodes. D. Only if the VM is intended for VM-to-host communications.

A

When using a site-to-site VPN, what type of device sits at the edge of the LAN and establishes the connection between sites? A. VPN gateway B. VPN transport C. VPN server D. VPN proxy

A

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? A. In an authorization file on the host where the SSH server is. B. In the /etc/ssh/keys folder. C. In an authorization file under your home directory on your computer. D. In the /var/run/ssh/public folder.

B

Which of the following is NOT a task that a VPN concentrator is responsible for? A. A VPN concentrator authenticates VPN clients. B. A VPN concentrator shuts down established connections with malicious traffic occurs. C. A VPN concentrator manages encryption for VPN transmissions. D. A VPN concentrator establishes tunnels for VPN connections.

A

Which of the following statements regarding the Point-to-Point (PPP) protocol is NOT accurate? A. PPP can support strong encryption, such as AH or ESP. B. PPP can negotiate and establish a connection between two endpoints. C. PPP can support several Network layer protocols, such as IP, that might use the connection. D. PPP can utilize an authentication protocol, such as MS-CHAPv2 or EAP to authenticate a client.

B

Which of the following virtualization products is an example of a bare-metal hypervisor? A. VirtualBox B. Citrix XenServer C. Linux KVM D. VMware Player

C

Which statement regarding the IKEv2 tunneling protocol is accurate? A. IKEv2 is an open-source VPN protocol that utilizes OpenSSL for encryption. B. IKEv2 is an older, Layer 2 protocol developed by Microsoft that encapsulates VPN data frames. C. IKEv2 offers fast throughput and good stability when moving between wireless hotspots. D. IKEv2 is based on technology developed by Cisco and standardized by the IETF.

D

Which statement regarding the use of a bridged mode vNIC is accurate? A. The vNIC will utilize the host PC's IP address. B. The vNIC will only be able to communicate across the bridge to the host PC. C. The vNIC will be assigned a NAT-ed IP address. D. The vNIC will its own IP address on the physical LAN.

D

Which type of cloud service model involves hardware services that are provided virtually, including network infrastructure devices such as virtual servers? A. XaaS B. PaaS C. SaaS D. IaaS

D

Why is the telnet utility a poor choice for remote access to a device? A. It does not allow for control of a computer remotely. B. It cannot be used over a public WAN connection. C. It provides no mechanism for authentication. D. It provides poor authentication and no encryption.