App layer/ACL

What layer of the OSI model is responsible for managing communication sessions?

• Application Layer

• Transport Layer

• Presentation Layer

• Session Layer

Which protocol is used to send email?

• HTTP

• SMTP

• FTP

• DNS

What does DNS stand for?

• Digital Name Service

• Dynamic Network System

• Domain Name System

• Data Network Service

Which command is used to list all directories and files in an FTP server?

• ls

• dir

• put

• get

What is the primary function of the presentation layer?

• Filtering data

• Routing data

• Encrypting data

• Compressing data

What does DHCP stand for?

• Dynamic Hypertext Control Protocol

• Dynamic Host Configuration Protocol

• Dynamic Host Control Protocol

• Dynamic Hypertext Configuration Protocol

Which of the following is NOT an application layer protocol?

• TCP

• FTP

• HTTP

• DNS

What is the purpose of an Access Control List (ACL)?

• To manage IP addresses

• To filter packets

• To encrypt data

• To compress files

What is the wildcard mask for filtering a single host?

• 255.255.255.255

• 0.0.0.0

• 0.0.0.255

• 255.255.255.0

Which of the following is a characteristic of a basic ACL?

• Filters based on MAC addresses

• Filters based on source and destination IP

• Filters based on port numbers

• Filters based on source IP only