A. Transport layer
B. Network layer
C. Application layer
D. Session layer
Explanation: IPSec is a set of protocols used to provide authentication, data integrity and confidentiality between two machines in an IP network. In the TCP/IP model, it provides security at the IP layer i.e. the network layer.
A. Entire ip packet
B. Ip header
C. Ip payload
D. Ip trailer
Explanation: In the tunnel mode, IPSec adds control bits into the packets to encrypt the entire packet between the IPSec endpoints. Using encryption, it provides secure communication between the two endpoints.
A. Ethernet
B. Bluetooth
C. Wi-fi
D. Email
Explanation: WPA2 or WiFi Protected Access 2 is a security protocol used to provide users and firms with strong data security and protection for their wireless networks (WiFi) to give them confidence that only authorized users can access their network.
A. Denial-of-service attack
B. Virus attack
C. Worms attack
D. Botnet process
Explanation: In a Denial of Service attack, the attacker won’t let the victims access the network by using a certain method that ensures that an essential network resource is unavailable to the victim. The methods that the attacker can use are vulnerability attack, bandwidth flooding and connection flooding.
A. Wired personal area network
B. Wireless networks
C. Wired local area network
D. Wired metropolitan area network
Explanation: The Extensible Authentication Protocol (EAP) is an authentication protocol used to connect a network node to the Internet. It designed through extending the methods used by the Point-to-Point Protocol for authentication.
A. Browser security
B. Email security
C. FTP security
D. Wifi security
Explanation: PGP is an encryption method used in e-mail security to encrypt and decrypt the content of an e-mail transmitted over the internet. It makes sure that the message cannot be stolen by other unauthorized users.
A. International data encryption algorithm
B. Private data encryption algorithm
C. Internet data encryption algorithm
D. Local data encryption algorithm
Explanation: The IDEA was designed in 1991 by Xuejia Lai and James Massey. Before IDEA, PGP used the cipher method BassOmatic.
A. DNS lookup
B. DNS hijacking
C. DNS spoofing
D. DNS authorizing
Explanation: In DNS spoofing, also known as DNS cache poisoning, an attacker gets the valid credentials from a victim by spoofing the intended resource, and tricking the victim to give his/her valid authorization credentials.
A. Authentication header (ah)
B. Encapsulating security payload (esp)
C. Internet key exchange (ike)
D. All of the mentioned
Explanation: AH ensures that there is no retransmission of data from an unauthorized source, and protects against data tampering. ESP provides with content protection and ensures that there is integrity and confidentiality for the message. IKE is used to make sure that only the intended sender and receiver can access the message.