CCST Network Services & Protocols 3

Question 1

What is PAT (Port Address Translation), also known as NAT Overload?

Accepted Answer

A type of NAT that maps multiple private IP addresses to a single public IP using unique port numbers

Answer

A type of NAT that maps one public IP to one private IP in a one-to-one relationship

Answer

A protocol that assigns ports dynamically to new TCP connections

Answer

A security feature that blocks inbound connections on specific ports

Question 2

What does ICMP stand for, and what is it primarily used for?

Accepted Answer

Internet Control Message Protocol — used to send error messages and operational information about network conditions

Answer

Internal Communication Management Protocol — used to manage internal network routing

Answer

Internet Connection Monitoring Protocol — used to track connection uptime

Answer

Integrated Circuit Management Protocol — used to configure network hardware

Question 3

Which protocol is used to transfer Cisco IOS images and configuration files to and from a router or switch using a simple, lightweight file transfer mechanism?

Accepted Answer

TFTP

Answer

FTP

Answer

SFTP

Answer

SCP

Question 4

What is the purpose of Syslog in a network environment?

Accepted Answer

To collect and store log messages from network devices for monitoring and troubleshooting

Answer

To assign IP addresses to devices on the network

Answer

To encrypt management traffic between devices

Answer

To synchronize time across all network devices

Question 5

Which DNS record type is used for reverse DNS lookups, mapping an IP address back to a hostname?

Accepted Answer

PTR

Answer

A

Answer

MX

Answer

CNAME

Question 6

What is a DHCP scope?

Accepted Answer

The range of IP addresses a DHCP server can assign to clients

Answer

The maximum number of clients a DHCP server can support simultaneously

Answer

The TTL value assigned to DHCP leases

Answer

The subnet mask provided to DHCP clients

Question 7

What well-known port does FTP use for control (command) connections?

Accepted Answer

21

Answer

20

Answer

22

Answer

23