210-250 Practice Questions

What phase of the TCP communication process is attacked during a TCP SYN flood attack?

What two are examples of UDP-based attacks? (Choose two.)

What best describes an attack vector?

What best describes an attack surface?

What is an example of a reconnaissance attack tool that will cycle through all well-known ports to provide a complete list of all services that are running on the hosts?

Which two are software vulnerability scanners? (Choose two.)

What best describes an amplification attack?

What best describes a DoS attack?

What type of attack occurs when the attacker spoofs the IP address of the victim, sending a continuous stream of small requests, which produce a continuous stream of much larger re...

What type of attack occurs when an attacker sends a flood of protocol request packets to various IP hosts and the attacker spoofs the source IP address of the packets, such that ea...

What type of spoofing attack uses fake source IP addresses that are different than their real IP addresses?

Which two attacks can be caused by a rogue DHCP server? (Choose two.)

A ping attack that exploits the broadcast IP address in a subnet is referred to as what type of attack?

Which protocol or diagnostic tool helps you determine how many hops away a network is and can be exploited by an attacker?

Which part of the UDP header would attackers replace if they change the data payload to prevent the receiver from identifying the change?

Which two methods might be used by an analyst to detect SSL/TLS encrypted command-and- control communication? (Choose two.)

What are two examples of the impacts of cryptography on security investigations that an analyst must know? (Choose two.)

Which type of ciphers rearrange or permute letters?

In which technology is network level encrypted not natively incorporated?

Which one of the following algorithms is most susceptible to collision when hashing different data sets?

What is the primary purpose for using a hash algorithm for a message?

Which one of the following options is used to determine the strength of a modern encryption algorithm?

What is the primary purpose for using an encryption algorithm on a message?

After encryption has been applied to a message, what is the message identified as?

Which type of encryption algorithm uses the same key to encrypt and decrypt data?

Which type of encryption algorithm uses the different but related keys to encrypt and decrypt data?

One cryptanalysis method that is used to defeat a multi-step encryption process uses both the original clear text to work forward toward an intermediate value, and the ending ciphe...

Which one of the following statements best describes crypto analysis?

Of the following, in which type of an attack does the attacker try every possible key with the decryption algorithm, knowing that eventually one of the keys will work?

Which one of the following options is the block cipher mode that uses an encryption method which has a feedback mechanism where each plaintext block is XORed with the previously en...

Which one of the following encryption algorithms is the preferred symmetrical algorithm that is intended to replace 3DES?

Which one of the following encryption methodologies allows you to maintain the privacy of an email communication, and ensure the origin of the message using PGP?

To provide origin authentication, the sender encrypts the message using an asymmetric encryption algorithm. In this case, the receiver of the message must use what to decrypt the m...

Which one of the following parts of the Diffie-Hellman calculation is an arbitrary item that is agreed upon by both parties before any mathematical calculations?

Which statement about the Diffie-Hellman Key Agreement is true?

Which one of the following is the first exchange during SSHv1 authentication negotiation?

To communicate that a document is using a digital signature, which one of the following is the next step in the process after a hash of the document is calculated by the sender?

Which three security services do digital signatures provide? (Choose three.)

When using PKI which two of the following are true? (Choose two.)

Which five of the following options are components of the X.509 v3 certificate standard? (Choose five.)

Which one of the following actions should be taken by a client to verify the entity that they received a certificate from is the entity that should be using the certificate?

Which two of the following statements are true regarding the CA in a PKI deployment? (Choose two.)

Which two of the following options must be included in the CSR that is to be signed by a CA? (Choose two.)

To facilitate encrypted bulk data transfer using the TLS protocol, the shared secret key that is sent from the client to the server is encrypted with which key?

What TCP port does SSL/TLS use for HTTPS communications?

The ECDHE_ECDSA part of the cipher list identifies which one of the following algorithms?

Which four of the following information is included in sets of cryptographic algorithms that are defined by an SSL/TLS cipher suite? (Choose four.)

Many legacy cipher suites available in TLS are deemed insecure. Which three of the following traits make them insecure? (Choose three.)