Ports and Protocols 2

Question 1

LDAP uses port?

Answer 1

TCP port 389.

Question 2

Port 389 is used by?

Answer 2

LDAP.

Question 3

Which port is used by HTTPS?

Answer 3

TCP port 443.

Question 4

Port 443 is used by?

Answer 4

HTTPS.

Question 5

Which protocol uses TCP port 445?

Answer 5

SMB/CIFS.

Question 6

Syslog uses port?

Answer 6

514.

Question 7

A network admin wants to secure the existing access to a directory service with SSL/TLS encryption. Which TCP needs to be opened?

Answer 7

TCP port 636, which is for LDAP over SSL.

Question 8

TCP port 636 is used by?

Answer 8

LDAP over SSL(TLS).

Question 9

Port used by RDP?

Answer 9

TCP port 3389.

Question 10

SIP uses ports?

Answer 10

TCP ports 5060 and 5061.

Question 11

Which protocol is used by routers, hosts and network devices to generate error messages and troubleshoot problems with delivery of IP packets?

Answer 11

ICMP. Internet Control Message Protocol is used by networked devices to diagnose communications issues and determine if data is reaching its intended destination in a timely manner.

Question 12

GRE is a…?

Answer 12

GRE or Generic Routing Encapsulation is a protocol used for tunneling one network protocol inside another.

Question 13

BGP is…?

Answer 13

Border Gateway Protocol is an exterior protocol that exchanges routing and reachability information between autonomous systems. It is a path-vector routing protocol that makes routing decisions based on paths, network policies, or configured rule-sets. It is the primary Internet protocol, and is used by ISPs to establish routes between their networks.

Question 14

Which part of the IPsec protocol suite provides authentication and inegrity?

Answer 14

AH (not AES).

Authentication Header. As a part of the IPsec protocol suite, it provides data integrity, origination authentication, and optional anti-replay services for IP packets. It does not provide any data encryption.

Question 15

Which part of the IPsec protocol suite provides authentication, integrity and confidentiality?

Answer 15

ESP.
Encapsulating Security Payload is a protocol providing data confidentiality, origin authentication, data integrity, and replay protection. It provides encryption, whereas AH does not. Both protocols provide authentication. ESP is used to encrypt IP packets.

Question 16

Which part of the IPsec protocol suite provides entire packet encryption?

Answer 16

Tunnel.

Question 17

A DNS record that stores administrative information about a domain or zone is?

Answer 17

SOA.

Question 18

Which DNS record provides reverse lookups (IP address to hostname)?

Answer 18

PTR.

Question 19

What is the function of a DNS TXT record?

Answer 19

Provides outside services with additional information about a domain.

Not used to direct any traffic.

Question 20

Which DNS record specifies a host and port information that allow to find specific services on a network?

Answer 20

SRV.

Question 21

DNS record that specifies a list of additional name servers on a domain is called?

Answer 21

NS.

Question 22

What are the differences between iterative and recursive DNS queries?

Answer 22

Iterative queries are a type of DNS query in which a name server sends a request to another name server for the lookup and the query is referred between name servers until the correct information is found.

Recursive queries are DNS queries in which the client communicates directly with each DNS server.

Question 23

Which of the following answers refer to the characteristics of the spine-and-leaf datacenter network architecture model?

Answer 23

Two-tier architecture.
Full mesh topology.

Question 24

FCoE, Fibre Channel, and iSCSI are connection types used in:

Answer 24

SAN.