CCNA 200-301 EXAM CRAM OVERVIEW Questions with Correct
Solutions
Question:
1. OSI Model
Answer:
The layers are Application, Presentation, Session, Transport, Network, Data Link, Physical.
Question:
2. TCP/IP Model
Answer:
The layers are Application, Transport, Internet, Network Interface.
Question:
3. PDUs of the Bottom Four Layers
Answer:
Segments, Packets, Frames, Bits.
Question:
4. Application Layer Protocols
Answer:
Examples include FTP, HTTP, SMTP.
Question:
5. Presentation Layer Protocols
Answer:
Examples include JPEG, MPEG.
Question:
6. Session Layer Protocols
Answer:
Examples include NetBIOS, PPTP.
Question:
7. Transport Layer Protocols
Answer:
Examples include TCP, UDP.
,Question:
8. Network Layer Protocols
Answer:
Examples include IP, ICMP.
Question:
9. Data Link Layer Protocols
Answer:
Examples include PPP, ATM.
Question:
10. Physical Layer Protocols
Answer:
Examples include Ethernet, USB.
Question:
11. UDP Characteristics
Answer:
Connectionless, very little overhead, often used for voice and video traffic, can multiplex
using port numbers.
Question:
12. TCP Characteristics
Answer:
Connection-oriented, more overhead than UDP, uses flow control, sequencing, and
acknowledgements for reliable delivery, can multiplex using port numbers.
Question:
13. Applications that use TCP
Answer:
Examples include HTTP, FTP, Telnet, SSH, SMTP.
Question:
14. Applications that use UDP
Answer:
Examples include DHCP, RIP, SNMP, TFTP, DNS.
,Question:
15. Well-Known Port Number for FTP Data
Answer:
Port 20, TCP.
Question:
16. Well-Known Port Number for FTP Control
Answer:
Port 21, TCP.
Question:
17. Well-Known Port Number for SSH
Answer:
Port 22, TCP.
Question:
18. Well-Known Port Number for Telnet
Answer:
Port 23, TCP.
Question:
19. Well-Known Port Number for SMTP
Answer:
Port 25, TCP.
Question:
20. Well-Known Port Number for DNS
Answer:
Port 53, UDP.
Question:
21. Well-Known Port Numbers for DHCP
Answer:
Ports 67, 68, UDP.
Question:
22. Well-Known Port Number for TFTP
, Answer:
Port 69, UDP.
Question:
23. Well-Known Port Number for HTTP
Answer:
Port 80, TCP.
Question:
24. Well-Known Port Number for POP3
Answer:
Port 110, TCP.
Question:
25. Well-Known Port Number for SNMP
Answer:
Port 161, UDP.
Question:
26. Well-Known Port Number for SSL/TLS
Answer:
Port 443, TCP.
Question:
27. Well-Known Port Number for Syslog
Answer:
Port 514, UDP.
Question:
28. Well-Known Port Number for RIP
Answer:
Port 520, UDP.
Question:
29. Access layer
Answer:
Provides workgroup/user access to the network; as a result, this layer is sometimes called the
workstation layer.
Solutions
Question:
1. OSI Model
Answer:
The layers are Application, Presentation, Session, Transport, Network, Data Link, Physical.
Question:
2. TCP/IP Model
Answer:
The layers are Application, Transport, Internet, Network Interface.
Question:
3. PDUs of the Bottom Four Layers
Answer:
Segments, Packets, Frames, Bits.
Question:
4. Application Layer Protocols
Answer:
Examples include FTP, HTTP, SMTP.
Question:
5. Presentation Layer Protocols
Answer:
Examples include JPEG, MPEG.
Question:
6. Session Layer Protocols
Answer:
Examples include NetBIOS, PPTP.
Question:
7. Transport Layer Protocols
Answer:
Examples include TCP, UDP.
,Question:
8. Network Layer Protocols
Answer:
Examples include IP, ICMP.
Question:
9. Data Link Layer Protocols
Answer:
Examples include PPP, ATM.
Question:
10. Physical Layer Protocols
Answer:
Examples include Ethernet, USB.
Question:
11. UDP Characteristics
Answer:
Connectionless, very little overhead, often used for voice and video traffic, can multiplex
using port numbers.
Question:
12. TCP Characteristics
Answer:
Connection-oriented, more overhead than UDP, uses flow control, sequencing, and
acknowledgements for reliable delivery, can multiplex using port numbers.
Question:
13. Applications that use TCP
Answer:
Examples include HTTP, FTP, Telnet, SSH, SMTP.
Question:
14. Applications that use UDP
Answer:
Examples include DHCP, RIP, SNMP, TFTP, DNS.
,Question:
15. Well-Known Port Number for FTP Data
Answer:
Port 20, TCP.
Question:
16. Well-Known Port Number for FTP Control
Answer:
Port 21, TCP.
Question:
17. Well-Known Port Number for SSH
Answer:
Port 22, TCP.
Question:
18. Well-Known Port Number for Telnet
Answer:
Port 23, TCP.
Question:
19. Well-Known Port Number for SMTP
Answer:
Port 25, TCP.
Question:
20. Well-Known Port Number for DNS
Answer:
Port 53, UDP.
Question:
21. Well-Known Port Numbers for DHCP
Answer:
Ports 67, 68, UDP.
Question:
22. Well-Known Port Number for TFTP
, Answer:
Port 69, UDP.
Question:
23. Well-Known Port Number for HTTP
Answer:
Port 80, TCP.
Question:
24. Well-Known Port Number for POP3
Answer:
Port 110, TCP.
Question:
25. Well-Known Port Number for SNMP
Answer:
Port 161, UDP.
Question:
26. Well-Known Port Number for SSL/TLS
Answer:
Port 443, TCP.
Question:
27. Well-Known Port Number for Syslog
Answer:
Port 514, UDP.
Question:
28. Well-Known Port Number for RIP
Answer:
Port 520, UDP.
Question:
29. Access layer
Answer:
Provides workgroup/user access to the network; as a result, this layer is sometimes called the
workstation layer.
