Cisco 210-250 Online Practice Questions and Exam Preparation

Cisco 210-250 Online Questions & Answers

• Question 791:

  Which one of the following statements best describes how 802.1q incorporates VLAN information onto an Ethernet frame?

  A. It uses a special EtherType to identify the Ethernet payload that contains the 802.1Q tag.
  B. It inserts a 4-byte header after the source MAC address in the original Ethernet frame, which carries the VLAN information.
  C. The VLAN information is identified in the Ethernet header Type/Length field.
  D. It encapsulates the entire Ethernet frame and adds a 4-byte header before the destination MAC address which carries the VLAN information.
  B. It inserts a 4-byte header after the source MAC address in the original Ethernet frame, which carries the VLAN information.

• Question 792:

  What are the advantages of a full-duplex transmission mode compared to half duplex mode? (Select all that apply.)

  A. Each station can transmit and receive at the same time.
  B. It avoids collisions.
  C. It makes use of back off time.
  D. It uses a collision avoidance algorithm to transmit.
  A. Each station can transmit and receive at the same time.
  B. It avoids collisions.

• Question 793:

  When observing the directory file listing, what does the letter "r" indicate in the output?

  A. The file is ready for use.
  B. The file has a read attribute applied.
  C. The file has been removed.
  D. The file is redundant.
  B. The file has a read attribute applied.

• Question 794:

  Which property of a cryptographic hash algorithm is desirable?

  A. collision resistance
  B. reversibility
  C. nondeterminism
  D. rainbow tables
  A. collision resistance

• Question 795:

  Referring to the output shown below, which statement is correct?

  

  A. Only the externally downloaded PowerShell scripts must be digitally signed.
  B. For any PowerShell script to execute, it must be digitally signed.
  C. This is the default execution policy and completely restricts the use of PowerShell scripts on the system.
  D. There are no restrictions on running PowerShell scripts.
  A. Only the externally downloaded PowerShell scripts must be digitally signed.

• Question 796:

  For which reason can HTTPS traffic make security monitoring difficult?

  A. encryption
  B. large packet headers
  C. Signature detection takes longer
  D. SSL interception
  A. encryption

• Question 797:

  When you execute the sudo command, you will be prompted for your password. How long is the default idle timeout for this mode?

  A. 10 minutes
  B. 15 minutes
  C. 5 minutes
  D. 3 minutes
  C. 5 minutes

• Question 798:

  Why does NAT present a challenge to security monitoring?

  A. NAT can present a challenge when performing security monitoring and analyzing logs because data can be encrypted as a result of the network address translation.
  B. NAT can present a challenge when performing security monitoring and analyzing logs because data can be dropped as a result of the network address translation.
  C. NAT can present a challenge when performing security monitoring and analyzing logs, NetFlow, and other data because device IP addresses can be seen in the logs as the "translated" IP address versus the "real" IP address.
  D. NAT can present a challenge when performing security monitoring and analyzing logs because data can be fragmented as a result of the network address translation.
  C. NAT can present a challenge when performing security monitoring and analyzing logs, NetFlow, and other data because device IP addresses can be seen in the logs as the "translated" IP address versus the "real" IP address.

• Question 799:

  What best describes domain shadowing?

  A. Domain shadowing provides a backup web site to redirect the user to, in the event of a compromise.
  B. Domain shadowing involves the attacker compromising a parent domain and creating multiple subdomains to be used during their attacks.
  C. Domain shadowing is the OpenDns response to a web site redirect when the HTTP 404 error code is received.
  D. Domain shadowing is a fault tolerant method that is used by developers when building and developing web-based services.
  B. Domain shadowing involves the attacker compromising a parent domain and creating multiple subdomains to be used during their attacks.

• Question 800:

  What kind of response message can a root name server send to the DNS recursor to inform it to ask the gTLD name servers for the .com domain name space?

  A. referral
  B. global
  C. ephemeral
  D. hierarchal
  A. referral