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