IS 302: Business Data Communications

Which of the following is a private IP address range?

10.x.x.x

In the mask 255.255.255.0, how many 1s are there?

24

A mask has ____ bits.

32

The total length of an IPv4 address is ____ bits.

32

Wi-Fi Standards come from the _________ Working Group.

802.11

What is the percentage of Fortune 500 companies that uses Azure?

95%

When two devices communicate using NFC, how close must they be?

A few inches

What security concern do ICMP echo request messages and echo response messages bring?

Attackers can learn that the other host's IP address is in use.

Which of the following is not a current Azure Development?

Azure Stack CSI

A TCP ______ segment is a request to the other transport process to close a connection.

FIN

For an internal client to use NAT to communicate with an external webserver, the client must be configured to do so.

False

In a Wi-Fi LAN, wireless hosts generally send frames directly to one another.

False

Nearly all public Wi-Fi hotspots encrypt your transmissions.

False

Most wireless systems operate in the _____ range.

GHz

Which has a better system for handling options beyond the main header?

IPv6

What is AWS?

Language and operating system agnostic platform

An access point can transmit to more than one wireless client at a time with _____________________.

Multiuser MIMO

_______ is the process of presenting external IP addresses that are different from internal IP addresses used within the firm.

NAT

Are all devices able to use WPA3?

No. most devices will require replacement or a firmware update.

To use an access point, you need to know its ________.

SSID

Which of the following is not considered a disadvantage or challenges of PaaS?

Scalability

Which of these are good reasons to use infrastructure as a service?

Scalability, cost, and availability

What is the main problem the 802.11ax standard of Wi-Fi 6 addresses?

Security

Which of the following is not a current business utilization of PaaS?

Security

Which of these organizations DOES NOT offer infrastructure as a service?

The Wi-Fi Alliance

Which of the following is not true in regards to upgrading to Wi-Fi 6?

Upgrading Wi-Fi routers and access points is a must.

The Wi-Fi Alliance calls 802.11i _________.

WPA2

How does WPA3 help keep devices on a public, open network secure?

WPA3 individually encrypts each device that connects to the network.

Wi-Fi is a term used by the _______________.

Wi-Fi Alliance

In SNMP, the manager communicates directly with an ____________.

agent

NAT ___________________________.

allows a firm to have more internal IP addresses and provides some security

If your local DNS server does not know the host name of an IP address, it will get the address from an ________________________________.

authoritative DNS server

To handle multiple conversations in 802.11 transmission, you normally use multiple _____________.

channels

802.11i 802.1X initial authentication mode was created for _____________________.

corporations with multiple access points

In DNS, a group of resources under the control of an organization is called a ________________.

domain

Companies get second-level domains from ___________________________.

domain registrars

In IPv6, the payload length gives the number of octets in the ________________________________________.

entire packet minus the main header

There is a row for each host address in an __________________________________.

ethernet switching table

In NAT, the _____________ creates new external source IP addresses and port numbers.

firewall

Frequency is measured in terms of _________.

hertz

Cloud Computing Software like AWS is ________________________________________________.

in high demand and is being used by both large and small businesses

Using a header checksum field to check for errors ________________________.

increases routing time

The downside of unlicensed bans is potential _______________________.

interference from others

A company is free to select whatever _____________ dynamic routing protocol it wishes.

interior

The domain name system _____________________________________________________.

is a general naming system for the Internet and is a way to find a host's IP addresses if your computer only knows the host's host name

The Internet is organized in a __________.

mesh

In a network mask, the 1s correspond to the ___________________.

network part

A border router connects different IP _______________.

networks

The hop limit field in IPv6 corresponds to the none of the fields in IPv4.; protocol, header checksum, length

none of the fields; protocol, header checksum, length

Wi-Fi normally uses an ____________________________.

omnidirectional antenna

Bluetooth uses _________________ operation.

one-to-one

Ethernet standards are set at the ______________________.

physical layer

NAT enhances security by __________________________________________________.

preventing sniffers from learning internal IP addresses

Dynamic ______________ protocols allow routers to transmit routing table information to one another.

routing

In a routing table, a ______ represents a route for a group of IP addresses.

row

Corporations wish to have _________________ domain names.

second-level

The second step in the routing process involves ___________________________________.

selecting the best-match row

Wi-Fi operates in the 2.4GHz and 5GHz _____________________.

service bands

In SNMP, companies are often reluctant to use ______ commands because of security dangers.

set

Ping is for __________________ messages.

supervisory

For cost reasons, you should ___________ where you can, ____________ where you must.

switch; route

The main benefit of IPv6 over IPv4 is ____________________________.

the ability to support more hosts

An advantage of using DHCP to configure clients is that _____________________________.

the configuration information will be up-to-date

Wireless network standards operate at __________________________.

the data link layer

".com" is a _____________________.

top-level domain

In decision cashing, when 20 packets arrive to the same destination IP address, the router will _________________________________________.

use the decision it made for the first one

Compared to wired transmission, propagation problems in radio transmissions are _____________.

worse