Exam 200-301 topic 1 question 645 discussion

crypto key generate rsa [general-keys | usage-keys | signature | encryption] [label key-label] [exportable] [modulus modulus-size] [storage devicename :] [redundancy] [on devicename :] modulus modulus-size By default, the modulus of a certification authority (CA) key is 1024 bits. The recommended modulus for a CA key is 2048 bits. The range of a CA key modulus is from 350 to 4096 bits. As the default key is 1024 bits. So that the answer D is correct

The command crypto key generate rsa modulus 1024 is used to generate an RSA (Rivest-Shamir-Adleman) key pair with a modulus of 1024 bits on a networking device, such as a router or a switch. The RSA key pair consists of a public key and a private key. RSA Key Pair: Public Key: The public key is used for encryption and is distributed to other devices in the network. It is used by other devices to encrypt data that can only be decrypted by the private key holder. Private Key: The private key is used for decryption and is kept secure on the device that generated the key pair. It is used to decrypt data that was encrypted using the corresponding public key. Purpose and Usage: The generated RSA key pair is primarily used for securing communication and ensuring the integrity and confidentiality of data in network devices.