General Flashcards
True or False: Every port on a switch has it’s own collision domain
True
True or False: Switches forward broadcast traffic
True
True or False: Routers forward broadcast traffic
False
True or False: Routers contain networks and act as a boundary
True
True or False: Switches move data between networks and subnets
False. Routers do this.
What is unicast?
A one-to-one connection
True or False: Every interface on a router is technically considered a network
True
True or False: Wireless Access Points translate wired connections into airwaves
True
True or False: All standard based wireless communications adheres to the 802.12 standard
False. It’s 802.11
True or False: 2.4 Ghz has reduced range but more bandwidth
False. 2.4Ghz has increased range but less bandwidth.
**True or False: **5Ghz has reduced range but more bandwidth
True
How many channels does 2.4Ghz have to work with?
11
How many clean channels does 2.4Ghz have?
3
What are the clean channels of 2.4Ghz?
1, 6 and 11
**True or False: **5Ghz has more clean channels to work with with hardly any signal overlap due to reduced range
True
True or False: A firewall allows everything by default and denies by exception
False. A router does this
**True or False: **A firewall denies everything by default and allows by exception
True
Why would you put a firewall into transparent mode?
To put a firewall between two switches inside your network and not break up the network. You might do this to inspect traffic inside your internal network
What is a more common mode for firewalls?
Routed. Sits at the edge of the network and divides networks up
True or False: Stateful filtering means that by default the firewall allows traffic to move from a lower security zone to a higher security zone but it does not allow the opposite.
False. Stateful filtering allows traffic to move from a higher security zone to a lower security zone but does not allow the opposite
Give an example of stateful filtering
A website cannot just reach out and talk to your internal network without being invited (lower security zone to higher security zone). However, it can respond back if the network initiated the contact (higher security zone to lower security zone)
True or False: CUCM is an IP based PBX
True
True or False: Hubs operate in Full Duplex Mode
False. Hubs operate in Half Duplex Mode.
True or False: Hubs can send and receive data at the same time
False. Hubs can only send or receive. They cannot do both at the same time
True or False: Switches operate in Half Duplex Mode only
False. Switches operate in Full and Half Duplex Mode.
True or False: Collision detection is required on a switch
False. This is because each port is it’s own collision domain.
True or False: Most switches that are connected to each other through a trunk port will have multiple MAC Addresses mapped to that port because that port is the path to other switch that hosts are coming off of
True
What ethernet standard is built into switches where if multiple devices transmit data to a port at the same time the switch forces a retransmit of the data?
CSMA / CD (Carrier Sense Multiple Access / Collision Detection)
This is a networking device, either hardware or software based, that controls access to the organization’s network
Firewall
