Chapter 3
1. What are two forms of application layer software? (Choose two.)
applications
dialogs
requests
services
syntax
2. What is the purpose of resource records in DNS?
temporarily holds resolved entries
used by the server to resolve names
sent by the client to during a query
passes authentication information between the server and client
3. What three protocols operate at the Application layer of the OSI model? (Choose three.)
ARP
DNS
PPP
SMTP
POP
ICMP
4. Which application layer protocols correctly match a corresponding function? (Choose two.)
DNS dynamically allocates IP addresses to hosts
HTTP transfers data from a web server to a client
POP delivers email from the client to the server email server
SMTP supports file sharing
Telnet provides a virtual connection for remote access
5. As compared to SSH, what is the primary disadvantage of telnet?
not widely available
does not support encryption
consumes more network bandwidth
does not support authentication
1. What are two forms of application layer software? (Choose two.)
applications
dialogs
requests
services
syntax
2. What is the purpose of resource records in DNS?
temporarily holds resolved entries
used by the server to resolve names
sent by the client to during a query
passes authentication information between the server and client
3. What three protocols operate at the Application layer of the OSI model? (Choose three.)
ARP
DNS
PPP
SMTP
POP
ICMP
4. Which application layer protocols correctly match a corresponding function? (Choose two.)
DNS dynamically allocates IP addresses to hosts
HTTP transfers data from a web server to a client
POP delivers email from the client to the server email server
SMTP supports file sharing
Telnet provides a virtual connection for remote access
5. As compared to SSH, what is the primary disadvantage of telnet?
not widely available
does not support encryption
consumes more network bandwidth
does not support authentication
