Interview Questions.

Question 1. What Is Passpoint?

Answer :

Passpoint is a application released by the Wi-Fi Alliance with the intention to streamline network get right of entry to in hotspots and put off the need for users to find and authenticate a community whenever they join. The first release of Passpoint become in 2012 and the second launch was in October 2014.

Question 2. What Features Are Included In Passpoint Release 2?

Answer :

The first launch of Passpoint covered features round network selection and secure access. In the second one launch of Passpoint, the Wi-Fi Alliance delivered new, streamlined methods for comfortable on-line signup and coverage provisioning. DigiCert SecureWiFi Certificates assist to relaxed the net signup technique.

Networking Interview Questions
Question three. Can I Use Another Type Of Certificate To Secure My Osu Server?

Answer :

WiFi certificates are able to authenticate a provider company due to the unique WiFi root on Passpoint-certified devices. WiFi certificate are the most effective form of certificate that can provide this authentication and the visual signs like the emblem and friendly name.

Question four. What Are The Logo And Friendly Name?

Answer :

When you order a SecureWiFi Certificate, you must consist of both a emblem, friendly name, or both a emblem and a friendly call. The emblem and friendly name are shown to end-customers after the WiFi certificates at the OSU server is confirmed by using the device to show that the provider provider has been authenticated.

Networking Tutorial
Question five. What Information Do I Need To Provide To Get A Securewifi Certificate?

Answer :

To order a SecureWiFi Certificate you need the commonplace call for the certificate, a emblem and/or pleasant call for your carrier issuer, organisation details (name, address), and get in touch with info (call, telephone, electronic mail). Once you entire the order, DigiCert’s validation crew will touch you to accumulate validation statistics.

Network Security Interview Questions
Question 6. What Other Products Does Digicert Offer?

Answer :

As a publicly depended on Certificate Authority, DigiCert offers a full line of authentication and encryption solutions.

Question 7. What Is The Wi-fi Alliance?

Answer :

The Wi-Fi Alliance is a global enterprise association that governs the requirements round WiFi interoperability and safety. 

Network Security Tutorial Internet Security Interview Questions
Question eight. Do Wifi Certificates Replace Wireless Security Protocols Like Wpa2?

Answer :

No. WiFi certificate are best used to encrypt data during the signup technique. They are not used to encrypt information that is handed whilst an give up-user is browsing the Internet.

Question 9. If My Wireless Network Doesn’t Have A Lot Of Traffic, Is It Okay To Use Wep Because The Ivs Required To Crack The Wep Key Won’t Be Generated?

Answer :

No. Automated gear are available that permit attackers to seize an ARP packet and reinject it to the get admission to factor very rapidly. This generates a big quantity of traffic and lets in the attacker to seize enough precise initialization vectors to quick crack the key

Computer Network Security Interview Questions
Question 10. What Is The Difference Between Active And Passive Wlan Detection?

Answer :

Active WLAN detection requires that the SSID be broadcast within the beacon body. Passive WLAN detection listens to all traffic in variety of the device and determines what WLANs are in variety.

Internet Security Tutorial
Question 11. Briefly Describe The Process Involved In Cracking Wep?

Answer :

To correctly crack a WEP key, you first need to acquire an Address Resolution Protocol (ARP) packet from the get admission to factor you need to assault. You can achieve this packet the usage of a device such as Void11 to send deauthentication packets to the clients related to that get right of entry to point. When the clients reassociate to the get admission to point, ARP packets may be generated and can be captured. After you have captured a legitimate ARP packet, you can use a tool inclusive of Aireplay, part of the Aircrack suite, to inject the ARP packet again into the network. This injection system will reason a massive quantity of initialization vectors to be generated. You can capture this visitors with any pcap layout sniffer. Ethereal, Airodump, and Kismet all help pcap layout. After you have captured among 500,000 and 1 million precise initialization vectors, you can then crack the WEP key the use of Aircrack or other, similar gear. Most of those tools are available without cost at the Internet.

Wireless Interview Questions
Question 12. How Many Types Of Extensible Authentication Protocols (eaps) Are Supported By Wpa/wpa2 And What Are They?

Answer :

There are six fully supported EAP types for WPA/WPA2: EAP-TLS; EAP-TLS/MSCHAPv2;

PEAPv0/EAP-MSCHAPv2; PEAPv1/EAP-GTC; EAP-SIM;and EAP-LEAP.

Networking Interview Questions
Question thirteen. What Is The Primary Difference Between 802.11g And 802.11a?

Answer :

802.11g operates inside the 2.Four GHz frequency variety, as do 802.11b and 802.11i, while 802.11a operates within the 5 GHz frequency range.

Wi-Fi Tutorial
Question 14. What Is The Difference Between The Hostap Drivers And The Wlan-ng Drivers For Linux?

Answer :

Both of those drivers work with a diffusion of cards; but, simplest the HostAP drivers let you vicinity your card in screen mode.

Question 15. Who Determines The Wireless Standards?

Answer :

The IEEE develops and determines the wireless requirements (802.11a, b, g, and so on). The WiFi Alliance, the institution that owns the WiFi trademark, then certifies the interoperability of these gadgets.

Domain Name System(DNS) Interview Questions
Question sixteen. What Tools Do You Use To Wardrive?

Answer :

Depending on the operating gadget in use, Kismet for Linux or Kismac for OS X provide the greatest degree of functionality for detecting and identifying WLANs. NetStumbler is available for Windows however helps best active WLAN detection and identification, while the Linux and OS X tools each guide passive WLAN detection and identity.

Wireless Communication Tutorial
Question 17. What Is The Minimum Passphrase Length That Should Be Used For Wpa-psk?

Answer :

Because WPA-PSK with a brief passphrase is liable to a dictionary attack, and automated gear are available to facilitate this process, a WPA-PSK passphrase need to be at the least 21 characters long.

DHCP Interview Questions
Question 18. What Is Wep?

Answer :

Wired Equivalent Privacy is a protection protocol defined by the IEEE Wireless Fidelity (WiFi) 802.11b fashionable designed to provide a similar degree of safety and privacy for a WLAN (wireless local region network) as commonly expected from a stressed out LAN (neighborhood location network).

Wired LANs but, are bodily included because they may be internal at ease buildings unlike wireless networks that send facts over radio waves no longer restrained by means of bodily obstacles like walls and floors. WEP encrypts information despatched over radio waves in order that it's far covered as it's miles transmitted from one stop point to some other.

Network Security Interview Questions
Question 19. How Secure Is Wep?

Answer :

WEP has been discovered to have some of weaknesses. At its base, the encryption algorithm is defective, making it vulnerable to cracking. Also, the keys used for protection are unreliable and without problems deciphered.

Question 20. Should I Use Wep?

Answer :

It is better than no safety in any respect, but it isn't always advocated.

CWNA (Certified Wireless Network Administrator) Interview Questions
Question 21. What Is Wpa?

Answer :

Wi-Fi Protected Access (WPA) is a information encryption specification for 802.11 wireless networks that replaces the weaker WEP. Created by WiFi Alliance earlier than the 802.11i security wellknown was ratified via the IEEE, it improves on WEP with the aid of using dynamic keys, Extensible Authentication Protocol to comfy community get entry to, and an encryption approach known as Temporal Key Integrity Protocol (TKIP) to secure data transmissions.

Question 22. What Is Wpa2?

Answer :

Wi-Fi Protected Access 2 is an improved model of WPA. It is the reputable 802.11i standard that became ratified by means of the IEEE in June 2004. WPA2 is stronger than WPA as it uses Advanced Encryption Standard (AES) in place of RC-four/TKIP (see above). AES supports 128-bit, 192-bit and 256-bit keys. WPA2 also can use pre-shared keys or 802.1x authentication.

Question 23. What Are 802.11i And 802.1x?

Answer :

These are new safety requirements advanced via 802.Eleven that use superior encryption technology which include Advanced Encryption Standard (AES) and Temporal Key Integrity Protocol (TKIP), in addition to cozy key-distribution strategies. 802.1x enables automatic changing of encryption keys at positive time durations, as an instance every 5 minutes or so.

By the time a hacker has intercepted a key and controlled to decipher it, a new key has already changed it.

BREW (Binary Runtime Environment for Wireless) Interview Questions
Question 24. What Is Encryption And Why Is It Important?

Answer :

Encryption is a safety degree that uses unique technology to scramble transmissions from one quit to the alternative. One of the most popular kinds of encryption makes use of unique keys or codes enabling two computers to communicate: the sending computer transmits a key or code to the receiving laptop and if the keys healthy, the sender is permitted into the machine.

Encryption is essential as it prevents others from reading your messages, files and records.

Internet Security Interview Questions
Question 25. What Is An Ssid ?

Answer :

Every wireless network, whether domestic or commercial enterprise, has a name along with as much as 32 letters or numbers with the aid of which it is able to be identified – that is its Service Set Identifier (SSID). A wireless get entry to point (AP) or router in open network mode will periodically broadcast a beacon sign along with the signal electricity and purposeful abilties of the AP, and the SSID to all wi-fi devices within range saying that the network is live.

Question 26. I Have Heard That Disabling The Ssid Beaconing Functionality Can Stop War Drivers From Acc Essing My Wlan . Is This True?

Answer :

This facilitates make your wi-fi network less inclined, however it’s still not failsafe. When you disable the beacon functionality, you need to know the SSID to get right of entry to the relationship. If you are not broadcasting, the hacker does now not without difficulty recognise the SSID to your network, but he can still intercept information packets as they tour between your get right of entry to point and wireless customer, vice versa. This facts can also screen the SSID of your network.

Wi-Fi Interview Questions
Question 27. What Is Ma C Filtering And How Effective Is It?

Answer :

Every Wi-Fi tool has its personal unique media get entry to manage (MAC) number. Networks can be configured to just accept only certain MAC addresses and filter the rest. MAC filtering is powerful for small networks, however for large networks it isn't as beneficial as experienced hackers can imitate a MAC address by way of intercepting it after which programming their personal pc to broadcast the use of this stolen MAC address.

Computer Network Security Interview Questions
Question 28. What Security Should I Use? Wep; Wpa Or Wpa2?

Answer :

You should use WPA2 as it's far the maximum comfy of all 3 options and makes use of AES encryption to shield records. After WPA2, WPA is the second most comfortable the usage of Temporal Key Integrity Protocol (TKIP) to at ease transmission. WEP is the least comfy because of its mistaken encryption algorithm.

Question 29. What Is Radius ?

Answer :

Already in vicinity in lots of organizations, faraway get right of entry to dial-up carrier (RADIUS), is another widespread that protects get admission to to wireless networks. RADIUS employs a person name and password scheme to permit simplest approved users get admission to to the community – it does no longer affect or encrypt information. When a consumer wishes get admission to to community files, electronic mail programs or the net, they publish their person name and password to the server, the server verifies that the user has an account, then verifies that the person is using an appropriate password, before granting get right of entry to.

Wireless Testing Interview Questions
Question 30. What Is Kerberos?

Answer :

Kerberos is a community authentication device based on key distribution, evolved by way of MIT.

Devices speaking over a wired or wireless network discover themselves to every other while stopping eavesdropping or replay assaults. After a purchaser and server have diagnosed themselves to each other, Kerberos allows their conversation to be encrypted to guarantee privateness and statistics integrity, the use of cryptography structures along with facts encryption general (DES).