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1.

Which of the following is the port number for SNMP?(a) 160(b) 161(c) 162(d) 163I have been asked this question in homework.The origin of the question is Ports and Its Types topic in chapter Cyber Security of Cyber Security

Answer» CORRECT option is (b) 161

Best EXPLANATION: PORT number 161 is the logical port number for Simple Network Management Protocol (SNMP) service. It’s an application layer protocol that helps in MANAGING and monitoring our network devices.
Discussion
2.

Which of the following is the port number for SNMP – Trap?(a) 160(b) 161(c) 162(d) 163I got this question at a job interview.I would like to ask this question from Ports and Its Types in section Cyber Security of Cyber Security

Answer»

Right choice is (c) 162

For explanation: PORT NUMBER 161 is the logical port number for Simple Network Management Protocol (SNMP) – Trap service, where Trap is used for services like prompting with ALERTS if the device that is using SNMP-trap is OVERHEATED.
Discussion
3.

TACACS+ uses TCP port 49.(a) True(b) FalseThis question was addressed to me in final exam.My enquiry is from Ports and Its Types topic in division Cyber Security of Cyber Security

Answer»

Correct answer is (a) True

Explanation: Terminal ACCESS Controller Access-Control System (TACACS) is used for handling remote AUTHENTICATION and associated SERVICES. TACACS+ was developed by Cisco SYSTEMS in the year 1993.
Discussion
4.

Which of the following is the port number for POP3?(a) 110(b) 111(c) 112(d) 113I got this question by my school teacher while I was bunking the class.Enquiry is from Ports and Its Types topic in section Cyber Security of Cyber Security

Answer»

The correct answer is (a) 110

The best EXPLANATION: PORT number 110 is the logical port number for Post Office Protocol-3 service. This protocol periodically checks our mail-box for SYNCHRONIZING our LATEST emails with that of the server.
Discussion
5.

Which of the following is the port number for Kerberos?(a) 87(b) 88(c) 89(d) 86This question was posed to me in a national level competition.The doubt is from Ports and Its Types in division Cyber Security of Cyber Security

Answer»

The CORRECT option is (b) 88

Explanation: Port NUMBER 88 is the logical port number for KERBEROS service. It is a computer NETWORK authentication protocol that works on a non-secure network to prove the IDENTITY.
Discussion
6.

Which of the following is the port number for HTTP?(a) 79(b) 80(c) 81(d) 82This question was posed to me in my homework.My doubt is from Ports and Its Types in division Cyber Security of Cyber Security

Answer»

Right ANSWER is (b) 80

For EXPLANATION: Port NUMBER 80 is the LOGICAL port number for the popular Hyper-Text Transfer Protocol (HTTP) service. This protocol DEFINES how messages are formatted and transmitted over unencrypted traffic.
Discussion
7.

Which of the following is the port number for SFTP service?(a) 21(b) 22(c) 23(d) 69I have been asked this question in my homework.Question is from Ports and Its Types topic in chapter Cyber Security of Cyber Security

Answer»

The correct choice is (b) 22

For explanation I would say: Port number 22 is both used as the logical port for SECURE File Transfer Protocol (SFTP) as WELL as Secure SHELL (SSH) service. This is because SFTP also uses SSH for ENCRYPTION.
Discussion
8.

Which of the following is the port number for TFTP service?(a) 69(b) 70(c) 71(d) 72I got this question in an internship interview.I need to ask this question from Ports and Its Types topic in section Cyber Security of Cyber Security

Answer»

Right choice is (a) 69

Easiest explanation: PORT number 69 is the logical port number for Trivial FILE Transfer PROTOCOL (TFTP) SERVICE. It is an internet software utility protocol used for transferring files.
Discussion
9.

Port 80 handles unencrypted web traffic.(a) True(b) FalseI had been asked this question in exam.I'm obligated to ask this question of Ports and Its Types topic in division Cyber Security of Cyber Security

Answer»

The correct option is (a) True

The explanation is: Ports are assigned to different services for identification of which port is sending TRAFFIC over the network. Port 80 is used by the popular HTTP (Hyper TEXT TRANSFER PROTOCOL) that handles unencrypted web traffic.
Discussion
10.

Why it is important to know which service is using which port number?(a) For database security(b) For reporting data security to the auditor(c) For understanding which data is going through secured traffic and which is not(d) For checking unused data trafficThis question was posed to me in exam.This intriguing question comes from Ports and Its Types in division Cyber Security of Cyber Security

Answer» CORRECT choice is (c) For understanding which data is going through secured traffic and which is not

Easy explanation: If a security analyst or ethical HACKER knows which port is OPEN and through which port data is going, he/she will be able to know which data is going in encrypted form and which one is not. Also, it helps in securing a system by closing the logical ports so that HACKERS cannot gain access through them.
Discussion
11.

Which of the following are the port numbers for DHCP?(a) 66, 67(b) 67, 68(c) 65, 66(d) 68, 69The question was posed to me at a job interview.Origin of the question is Ports and Its Types in portion Cyber Security of Cyber Security

Answer»

Right option is (C) 65, 66

The best I can explain: PORT numbers 67 and 68 are the logical port numbers for Dynamic Host Configuration Protocol (DHCP) service. It helps in providing Internet Protocol (IP) host automatically along with RELATED configuration information like subnet mask and default gateway.
Discussion
12.

Which of the following are the port numbers for IPSec service?(a) 50, 51(b) 49, 50(c) 51, 52(d) 23, 24I have been asked this question in a national level competition.Asked question is from Ports and Its Types in chapter Cyber Security of Cyber Security

Answer»

Right option is (a) 50, 51

To explain: Port numbers 50 and 51 are the logical port numbers for IPSEC service. IPSec is a standard protocols suite USED among 2 communication points that help in providing DATA authentication, CONFIDENTIALITY, and integrity.
Discussion
13.

Which of the following is the port number for SSH (Secure Shell)?(a) 20(b) 21(c) 22(d) 23I got this question in class test.My question is based upon Ports and Its Types in section Cyber Security of Cyber Security

Answer»

Correct option is (c) 22

The BEST explanation: PORT number 22 is the logical port number for Secure Shell SERVICE. SSH gives users (specifically system administrators), a WAY to securely ACCESS computers on unsecured network connectivity.
Discussion
14.

Which of the following is the port number for SMTP service?(a) 29(b) 27(c) 25(d) 23This question was posed to me at a job interview.Enquiry is from Ports and Its Types in portion Cyber Security of Cyber Security

Answer»

Correct option is (c) 25

The explanation: Port NUMBER 25 is the logical port number for Simple Mail TRANSFER Protocol (SMTP) service. SMTP is an Internet standard protocol for EMAIL TRANSMISSION.
Discussion
15.

Which of the following is the port number for Telnet?(a) 20(b) 21(c) 22(d) 23The question was asked in quiz.The question is from Ports and Its Types topic in division Cyber Security of Cyber Security

Answer»

Right option is (d) 23

The best I can EXPLAIN: Port number 23 is the LOGICAL port number for Telnet. Telnet is used for bi-directional communication over the internet in text-oriented format. It also gives VIRTUAL TERMINAL connectivity.
Discussion
16.

Which of the following is the port number for FTP control?(a) 20(b) 21(c) 22(d) 23The question was asked in final exam.This question is from Ports and Its Types in section Cyber Security of Cyber Security

Answer»

Right option is (B) 21

To explain I would say: Port number 21 is the logical port number for FTP control SERVICE. FTP protocol is a standard protocol used for TRANSMITTING and receiving files from client to SERVER through a network.
Discussion
17.

The logical port is associated with the type of protocol used along with the IP address of the host.(a) True(b) FalseThis question was posed to me during an interview.Question is taken from Ports and Its Types topic in portion Cyber Security of Cyber Security

Answer»

Correct choice is (a) True

The best I can explain: During a communication, the logical port is ass associated with the type of protocol used along with the IP address of the host. The NUMBERS logical PORTS are pre-assigned by IANA (INTERNET Assigned Numbers Authority) which RANGES from 0 – 65536.
Discussion
18.

Which of the following is the port number for FTP data?(a) 20(b) 21(c) 22(d) 23The question was posed to me during an interview for a job.This intriguing question comes from Ports and Its Types topic in portion Cyber Security of Cyber Security

Answer» CORRECT OPTION is (a) 20

The explanation is: Port number 20 is the logical port number for FTP data service. FTP protocol is a standard protocol used for transmitting and RECEIVING files from client to server through a network.
Discussion
19.

________ needs some control for data flow on each and every logical port.(a) Antivirus(b) Network firewall(c) Intrusion Detection Systems (IDS)(d) Anti-malwareThis question was addressed to me in semester exam.This intriguing question originated from Ports and Its Types in portion Cyber Security of Cyber Security

Answer»

The correct answer is (b) Network firewall

For EXPLANATION: For security REASON, there is some additional CONTROL provided by the network firewall over DATA traffic going through each LOGICAL ports.
Discussion
20.

Logical ports are also known as ________________(a) numbered ports(b) virtual numbering(c) virtual ports(d) network protocol portsThis question was posed to me in an international level competition.This key question is from Ports and Its Types topic in portion Cyber Security of Cyber Security

Answer»

The correct choice is (C) virtual ports

The best EXPLANATION: Logical ports are also known as virtual ports which are part of TCP/IP networking. The numbers of ports are pre-ASSIGNED by IANA (INTERNET Assigned Numbers Authority) which ranges from 0 – 65536.
Discussion
21.

Virtual ports help software in sharing without interference all hardware resources.(a) True(b) FalseThe question was asked in a job interview.This interesting question is from Ports and Its Types topic in division Cyber Security of Cyber Security

Answer» RIGHT choice is (a) True

The explanation is: VIRTUAL ports also known as logical ports helps different applications in SHARING WITHOUT the interference of all hardware resources. The network traffic is automatically managed by ROUTERS using these ports.
Discussion
22.

Number of logical ports ranges from _____ to _____(a) 0, 255(b) 1, 65535(c) 1, 65536(d) 0, 65536I got this question by my school teacher while I was bunking the class.My doubt stems from Ports and Its Types topic in portion Cyber Security of Cyber Security

Answer»

Right option is (d) 0, 65536

For explanation: The NUMBERS are pre-ASSIGNED by IANA (INTERNET Assigned Numbers Authority) which ranges from 0 – 65536. All the used protocols are assigned with a unique port number.
Discussion
23.

____________ are logical numbers assigned for logical connections.(a) Logical ports(b) Physical ports(c) Networking cables(d) IP addressThis question was posed to me during an internship interview.Origin of the question is Ports and Its Types in portion Cyber Security of Cyber Security

Answer»

The correct answer is (a) Logical ports

Explanation: Logical ports are end-point to a logical connection. The NUMBERS are pre-assigned by IANA (INTERNET Assigned Numbers AUTHORITY) which RANGES from 0 – 65536.
Discussion
24.

Physical ports are usually referred to as ___________(a) jacks(b) cables(c) interfaces(d) hardware plugsThis question was posed to me in an interview for internship.Enquiry is from Ports and Its Types topic in portion Cyber Security of Cyber Security

Answer»

Right OPTION is (C) interfaces

The best I can explain: Physical ports are connections that connect two SYSTEMS for their INTERACTIONS. LAN, PS2 and DVI are EXAMPLES of physical ports.
Discussion
25.

PS2 and DVI are examples of Logical ports.(a) True(b) FalseI got this question in an online quiz.I need to ask this question from Ports and Its Types topic in chapter Cyber Security of Cyber Security

Answer»

Correct option is (b) False

To elaborate: PS2 and DVI are examples of physical PORTS. Physical ports can be TOUCHED and seen with our naked EYES.
Discussion
26.

There are ______ major types of ports in computers.(a) 1(b) 2(c) 3(d) 4This question was addressed to me during an online interview.The question is from Ports and Its Types in chapter Cyber Security of Cyber Security

Answer» RIGHT answer is (b) 2

To EXPLAIN I would say: There are 2 MAJOR types of PORTS in computer systems. These are physical ports and logical ports.
Discussion