Network+ Chap 7/8

A subnet of 255.255.248.0 can be represented by what CIDR notation?

/21

An IP address of 192.168.18.73/28 has what network ID?

192.168.18.64

By default, when using classful addressing, how many bits exist in the host portion of a Class A address?

24

What subnet mask can be used to segment the 172.16.0.0 network to allow for a minimum of 6 subnets while maximizing the number of hosts per subnet?

255.255.224.0

A network with a CIDR notation of /26 would have what subnet mask?

255.255.255.192

How large is the 802.1Q tag that is added to an Ethernet frame when using VLANs?

4 bytes

How many subnets can a /48 site prefix support?

65,536 subnets

What IEEE standard specifies how VLAN information appears in frames and how switches interpret that information?

802.1Q

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

A

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

A

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

A

When using IPv6, what would a /64 network likely be assigned to?

A smaller organization or business.

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

B

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

D

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

D

Which of the following statements regarding IPv6 subnetting is NOT accurate? A) IPv6 addressing uses no classes, and is therefore classless. B) IPv6 does not use subnet masks. C) A single IPv6 subnet is capable of supplying 18,446,744,073,709,551,616 IPv6 addresses. D) The largest IPv6 subnet capable of being created is a /64.

D

What special enterprise VPN supported by Cisco devices creates VPN tunnels between branch locations as needed rather than requiring constant, static tunnels?

Dynamic Multipoint VPN

(T/F) A native VLAN mismatch occurs when two access ports that are connected to each other are both tagging traffic with different VLAN IDs.

F

(T/F) All that is needed to provide communication between two VLANs is a DHCP relay agent.

F

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

F

(T/F) Network segmentation decreases both performance and security on a network.

F

(T/F) Only Class B and Class C networks can be subnetted.

F

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

F

Which type of cloud service model involves hardware services that are provided virtually, including network infrastructure devices such as virtual servers?

IaaS

Why is the telnet utility a poor choice for remote access to a device?

It provides poor authentication and no encryption.

What does the VLAN Trunk Protocol (VTP) do?

It shares VLAN database information amongst switches that participate.

A vSwitch (virtual switch) or bridge is a logically defined device that operates at what layer of the OSI model?

Layer 2

By default, what network connection type is selected when creating a VM in VMware, VirtualBox, or KVM?

NAT mode

At what layer of the OSI model does the IPsec encryption protocol operate?

Network layer

With VTP, where is the VLAN database stored?

On the switch that is known as the stack master.

In a software defined network, what is responsible for controlling the flow of data?

SDN controller

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

In an IPv6 address, what do the first four blocks or 64 bits of the address represent?

Site prefix (Global routing prefix)

(T/F) A community cloud is a service shared between multiple organizations, but not available publicly.

T

(T/F) An enterprise-wide VPN can include elements of both the client-to-site and site-to-site models.

T

(T/F) By default, the native VLAN is the same as the default VLAN.

T

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

T

(T/F) IPv6 addressing does not utilize classful addressing, therefore every IPv6 address is classless.

T

(T/F) In order to identify the transmissions that belong to each VLAN, a switch will add a tag to Ethernet frames that identifies the port through which they arrive at the switch.

T

(T/F) Network segmentation at Layer 2 of the OSI model is accomplished using VLANs.

T

(T/F) Office 365 is an example of an SaaS implementation with a subscription model.

T

(T/F) PPP can support several types of Network layer protocols that might use the connection.

T

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

T

If the EUI-64 standard is used, what part of an IPv6 address is affected?

The middle four blocks of the address.

VMware Player and Linux KVM are both examples of what type of hypervisor?

Type 1 hypervisor

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

An interface that manages traffic from multiple VLANs is known by what term?

aggregation port

What is NOT one of the ways in which networks are commonly segmented?

by device manufacturer

Subtracting an interesting octet value from 256 yields what number?

magic number

The use of certificate authorities to associate public keys with certain users is known by what term?

public-key infrastructure