Nakamura, an encryption specialist at an eccouncil video

Full Certification Question

Nakamura, an encryption specialist at an organization, was instructed to implement a secure communication technique for the corporate network. For this purpose, Nakmura employed an encryption technology that uses a cipher mode of operation, which requires an initialization vector (IV) and a secret key for encryption. In this mode of operation, the first block of plaintext is XORed with the IV and the resultant is sent as input to the block cipher encryption algorithm, along with the secret key. Then, the cipher block is used to perform XOR with the next plaintext block, and this process continues for the encryption of all the plaintext blocks. Which of the following cipher modes of operation is demonstrated in the above scenario?