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Question 197/480

A circuit level gateway works at which of the following layers of the OSI Model?

A. Layer 2 - Data link

B. Layer 4 - TCP

C. Layer 5 - Application

D. Layer 3 - Internet protocol

Recent Comments (The most recent comments are at the top.)

safexfer - Apr 24, 2021

A circuit-level gateway is a type of firewall. Circuit-level gateways work at the session layer of the OSI model, or as a "shim-layer" between the application layer and the transport layer of the TCP/IP stack. They monitor TCP handshaking between packets to determine whether a requested session is legitimate.

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In what k...; Question 418: A possibly malicious sequence of packets that were sent to a...; Question 419: Which command line switch would be used in NMAP to perform o...; Question 420: A penetration tester was hired to perform a penetration test...; Question 421: Which among the following is a Windows command that a hacker...; Question 422: You have successfully comprised a server having an IP addres...; Question 423: What is not a PCI compliance recommendation?...; Question 424: During a penetration test, a tester finds that the web appli...; Question 425: What is the primary drawback to using advanced encryption st...; Question 426: What is the term coined for logging, recording and resolving...; Question 427: The fundamental difference between symmetric and asymmetric ...; Question 428: One advantage of an application-level firewall is the abilit...; Question 429: An attacker changes the profile information of a particular ...; Question 430: Emil uses nmap to scan two hosts using this command. nmap -s...; Question 431: Firewalk has just completed the second phase (the scanning p...; Question 432: A company firewall engineer has configured a new DMZ to allo...; Question 433: What tool and process are you going to use in order to remai...; Question 434: What mechanism in Windows prevents a user from accidentally ...; Question 435: What is the difference between the AES and RSA algorithms?...; Question 436: It is a vulnerability in GNU's bash shell, discovered in Sep...; Question 437: env x=`(){ :;};echo exploit` bash -c 'cat /etc/passwd' What ...; Question 438: How does an operating system protect the passwords used for ...; Question 439: Which of the following is an example of two factor authentic...; Question 440: A consultant is hired to do physical penetration testing at ...; Question 441: Which Open Web Application Security Project (OWASP) implemen...; Question 442: Windows file servers commonly hold sensitive files, database...; Question 443: > NMAP -sn 192.168.11.200-215 The NMAP command above perf...; Question 444: Which method can provide a better return on IT security inve...; Question 445: A security administrator notices that the log file of the co...; 1 commentQuestion 446: Shellshock had the potential for an unauthorized user to gai...; Question 447: A penetration tester is hired to do a risk assessment of a c...; Question 448: You've gained physical access to a Windows 2008 R2 server wh...; Question 449: International Organization for Standardization (ISO) standar...; Question 450: A certified ethical hacker (CEH) completed a penetration tes...; Question 451: What is the most common method to exploit the "Bash Bug" or ...; Question 452: The network administrator contacts you and tells you that sh...; Question 453: The "black box testing" methodology enforces which kind of r...; Question 454: An attacker tries to do banner grabbing on a remote web serv...; Question 455: An engineer is learning to write exploits in C++ and is usin...; Question 456: The Open Web Application Security Project (OWASP) is the wor...; Question 457: It is an entity or event with the potential to adversely imp...; Question 458: What attack is used to crack passwords by using a precompute...; Question 459: When an alert rule is matched in a network-based IDS like sn...; Question 460: Bob received this text message on his mobile phone: ""Hello,...; Question 461: Which statement best describes a server type under an N-tier...; Question 462: Which protocol and port number might be needed in order to s...; Question 463: Initiating an attack against targeted businesses and organiz...; Question 464: Which service in a PKI will vouch for the identity of an ind...; Question 465: To reduce the attack surface of a system, administrators sho...; Question 466: In an internal security audit, the white hat hacker gains co...; 2 commentQuestion 467: The chance of a hard drive failure is known to be once every...; Question 468: If executives are found liable for not properly protecting t...; Question 469: When using Wireshark to acquire packet capture on a network,...; Question 470: Which of the following is the BEST way to defend against net...; Question 471: Perspective clients want to see sample reports from previous...; Question 472: An attacker sniffs encrypted traffic from the network and is...; Question 473: Which type of antenna is used in wireless communication?...; Question 474: On a Linux device, which of the following commands will star...; Question 475: Which of the following guidelines or standards is associated...; Question 476: Your company performs penetration tests and security assessm...; Question 477: Suppose you've gained access to your client's hybrid network...; Question 478: Under the "Post-attack Phase and Activities", it is the resp...; Question 479: A person approaches a network administrator and wants advice...; Question 480: A server has been infected by a certain type of Trojan. The ...

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