B.3.2 Networking Flashcards
SNMP
Simple Network Management Protocol
POP3
Send it to the recipient and deletes it off the server
IMAP
Keeps a copy on the server so it can be accessed across devices
Port 143
IMAP
Port 110
POP3
Connects network segments
Ethernet Router
Connects devices on a network
Ethernet switch
What causes wireless interference
Cordless phones, microwaves, and backup generators
What does a network switch do?
It connects multiple cable segments or hosts and forwards data packets to the appropriate host
How do switches learn where devices are on a network?
Copies the source MAC address from a packet
Frequency and bandwidth: 802.11a
5GHZ at 54Mbps
Frequency and bandwidth: 802.11b
2.4GHZ at 11Mbps
Frequency and bandwidth: 802.11g
2.4GHZ at 54Mbps
Frequency and bandwidth: 802.11n
5GHZ and 2.4GHZ at 600Mbps
Frequency and bandwidth: 802.11ac
5GHZ at 3.46Gbps
Frequency and bandwidth: 802.11ax
5GHZ and 2.4GHZ at 14Gbps
When connecting 2 buildings together with a wireless transmitter there are a lot of connection drops. How would you fix this problem?
Increase power to the access point.
WEB server platform, one for Windows and one for Linux
IIS - Windows
Apache - Linux
Which load balancer algorithms takes each server’s active connections and processing power into consideration?
Weighted least connections
You would like to control internet access based on user, time of day, and websites visited.
Install a proxy server. Allow internet access only through the proxy server.
Functions of a proxy server
Blocks websites
Cache web pages
As a network administrator for your company, you want to set up a network device that manages internal traffic between servers and clients.
Reverse proxy server
As a network administrator for your company, you want to set up a network device that manages traffic leaving and entering your network from the outside.
Forward proxy server
Which algorithm is used by an Application layer load balancer?
Least pending request
Embedded device microprocessor that is designed for a specific function.
application-specific integrated circuit or ASIC
Your employer wants a system that guarantees that all components will work together with minimal configuration and setup. Time is of the essence in getting this new system ready.
DCS
DCS is a package that includes PLCs, SCADA, and HMI.
What protocol is used for two servers to talk with each other
Modbus
Z-wave Hop distance
250 feet
Zigbee Hop distance
60 feet
Z-wave max hops
4 Hops between the hub and the devices
Zigbee max hops
Unlimited hops between the hub and the devices
What part is the interface ID component of an IPv6 Address
The last 4 quartets or last 64 bits of the address
What quartet is the subnet mask in an IPv6 address?
The 4th quartet or the last quartet of the prefix
What is the last allowed character in hexadecimal?
F and G is not allowed
What does it mean if you have a IP address that starts with 169.254?
You have an APIPA address because you cant find a DHCP server.
What is needed to send data out of your local router
A Default gateway
Which part of an IPv4 address will be unique for each device on a network?
Host ID
What is the network ID?
IP Adress : 192.168.1.52
Subnet mask : 255.255.255.0
192.168.1 is the Network ID and 52 is the Host ID
Who starts the interaction when getting an IP address? The computer or the DHCP server
The computer has to request an IP address from the DHCP.
What is it called when your internet access uses a modem and has the same data speeds Up and down
SDSL or symmetric digital subscriber line
What is a wisp
Wireless Internet Service Provider
What internet connection type requires there to be no obstacles between the two antennae
Wisp
What is the intranet used for?
An Intranet is used when a company has a website that can only be accessed when on a private network.
What is used to test a port to see if it is functioning properly
A loopback plug
