Wireless and Network Interview Questions and Answers
Q1. What is Wi-Fi?
Wi-Fi is a technology that uses radio waves to provide
network connectivity. A wi-fi connection is established using a wireless
adapter to create hotspots - areas in the vicinity of a wireless router that
are connected to the network and allow users to access internet services. Once
configured, wifi provides wireless connectivity to your devices by emitting
frequencies between 2.4 GHz - 5 GHz, based on the amount of data on the
network.
Q2. What is a Wi-Fi hotspot?
A hotspot is a physical location where people may obtain
internet access, typically using wi-fi technology, via a wireless local area
network (Wlan) using a router connected to an internet service provider.
Q3. What are IBSS and BSS?
Independent Basic Service Set (IBSS) allows two or more
devices to communicate directly with each other without a need for a central
device.
Basic Service Set (BSS) wireless LAN is established using
a central device called an Access Point that centralizes access and control
over a group of wireless devices.
Q4. Why WPA encryption is preferred over WEP?
A)
Encryption is preferred over WEP.
B)
The access point and the client are manually
configured with different WPA key values.
C)
Wep Key values remain the same until the client
configuration is changed.
D)
The values of WPA keys can change dynamically
while the system is used.
Q5. What is 802.1x and EAP?
IEEE 802.1x is an IEEE standard for port-based network
access control (PNAC). It is part of the IEEE 802.1 group of networking
protocols. It provides an authentication mechanism to devices wishing to attach
to a LAN or Wlan.
Q6. Name two devices can interfere with the operation of
a wireless network because they operate on similar frequencies?
1.
Microwave oven
2.
Cordless phone
Q7. What are three basic parameters to configure on a
wireless access point?
1.
SSID
2.
RF
3.
Channel authentication method
Q8. What is the maximum data rate specified for IEEE 802.11b
wlan?
11 mbps
Q9. Which encryption type does wpa2 uses?
WPA uses Tkip and wpa2 uses AES, but in summary Tkip is
an older encryption standard used by the old WPA standard. AES is a newer wi-fi
encryption solution used by the new-and-secure wpa2 standard. In theory, that's
the end of it 317 and 802.1b is being utilized in the wireless network.
Q10. How does DHCP work with the Wireless?
The wireless is designed to act as a dhcp relay agent to
the external dhcp server and acts like a dhcp server to the client. This is the
sequence of events that occurs: Generally, wlan is tied to an interface which
is configured with a dhcp server. When the wireless receives a dhcp request
from the client on a wlan, it relays the Request to the dhcp server with its
management ip address. The wireless shows its virtual ip address, which must be
a non−routable address, usually configured as 192.168.0.1, as the dhcp server
to the client.
Q11. Which two wireless encryption method are based on RC4
encryption algorithm?
1.
Wep
2.
Tkip
Q12. What is the function of wlan on wireless?
Wlan is similar to that of ssid in the access point. It
is required for a client to associate with its wireless network.
3 comments
I don't know whether it's just me or if everyone else encountering problems with
ReplyDeleteyour blog. It appears like some of the written text within your posts are running off the screen. Can someone else please provide feedback and let me know if this is happening to them too?
This may be a issue with my internet browser because I've had this happen before.
Thanks
Can I connect two wifi devises to a wifi extender and communicate with each other with out an internet connection?
ReplyDeleteyes. you can do that.
DeletePlease leave your comments...... Thanks