A+ 1101 PM Review Day 6

What port does the SMB protocol primarily use for file sharing?

• TCP/20
• TCP/21
• TCP/139
• TCP/445

Answer explanation

SMB runs directly over TCP port 445 for file and printer sharing.

What port does HTTP use by default for client-server communication?

• TCP/21
• TCP/80
• TCP/53
• TCP/443

Answer explanation

HTTP uses port TCP/80 for unencrypted web traffic.

What is the default port used by HTTPS?

• TCP/80
• TCP/443
• TCP/21
• TCP/25

Answer explanation

HTTPS uses port TCP/443 for secure web communication.

What protocol is used for sending email between mail servers?

• IMAP
• POP3
• SMTP
• HTTPS

Answer explanation

SMTP (Simple Mail Transfer Protocol) is used for sending emails.

What protocol allows email clients to download messages from a mailbox server while deleting them from the server by default?

• SMTP
• IMAP
• POP3
• DNS

Answer explanation

POP3 downloads messages to a local client and typically deletes them from the server unless configured otherwise.

Which protocol is commonly used to query and update directory services like Windows Active Directory?

• RADIUS
• LDAP
• DNS
• DHCP

Answer explanation

LDAP is a protocol that queries and updates X.500-based directory services, such as Windows Active Directory.

Which protocol is used for secure remote access to a UNIX or Linux server?

• Telnet
• SSH
• RDP
• FTP

Answer explanation

SSH provides encrypted remote terminal access, replacing insecure options like Telnet.

Which port is used by SNMP for trap messages?

• UDP/161
• UDP/514
• UDP/162
• TCP/23

Answer explanation

SNMP traps are sent over UDP/162.

What is the main advantage of caching content on a proxy server?

• It blocks malicious websites.
• It reduces the overall time for processing client requests.
• It lowers bandwidth consumption and improves load times.
• It authenticates users before accessing the content.

Answer explanation

Caching reduces the need to repeatedly download the same content, improving performance and saving bandwidth.

What is the main benefit of a Unified Threat Management (UTM) appliance?

• It eliminates the need for firewalls.
• It consolidates multiple security functions into one system.
• It replaces the DNS server on a network.
• It removes the need for spam filters.

Answer explanation

UTM combines security functions like firewalls, IDS/IPS, antivirus, and content filters into a single system for centralized management.