Certiport Networking Certification Question with
Verified Correct Answers
SMTP (Simple Mail Transfer Protocol)
25 TCP
FTP
20, 21 TCP
HTTPS (Hypertext Transfer Protocol Secure)
An encrypted version of HTTP. It uses port 443.
IoT (Internet of Things)
a large network of physical objects including sensors and equipment
OSI Layer 1 - Physical
Protocols: 100BaseT, 1000BaseT.
Device: hubs, RJ45, repeater.
OSI Layer 2 - Data Link
Protocols: Ethernet, MAC, Frames, crc.
Device: NIC, switch, bridge, WAPs.
OSI Layer 3 - Network
,Logical addressing, switching type, route discovery/selection, and packet ordering.
IP, ICMP, ARP, RIP, IPX
Device: Router
OSI Layer 4 - Transport
Protocols (TCP/UDP), windowing, buffering
Device: N/A
OSI Layer 5: Session
Protocols: Log on/ Log off, NetBIOS, Negotiation
Device: N/A.
OSI Layer 6: Presentation
Protocols: compression, encryption.
Device: N/A.
OSI Layer 7: Application
Protocols: FTP, HTTP, HTTPS, POP3, SMTP, IMAP
Device: Gateway
UDP
connectionless messaged based protocol with best effort service.
TCP
Transmission Control Protocol, connection oriented protocol with guaranteed service
, ARP
Address Resolution Protocol, resolves IP addresses to MAC addresses.
Loopback address
127.0.0.0 - 127.255.255.255
Multicast address
224.0.0.0 to 239.255.255.255
Private Network addresses
192.168.0.0 - 192.168.255.255
Class A IP Address
1-126 Leading bits.
128 Networks.
16,777,214 Hosts per Network.
Default Subnet Mask 255.0.0.0
Class B IP Address
128-191 Leading bits.
16,384 Networks.
65,534 Hosts per Network.
Default Subnet Mask 255.255.0.0
Class C IP Address
192-223 Leading bits.
2,097,152 Networks.
Verified Correct Answers
SMTP (Simple Mail Transfer Protocol)
25 TCP
FTP
20, 21 TCP
HTTPS (Hypertext Transfer Protocol Secure)
An encrypted version of HTTP. It uses port 443.
IoT (Internet of Things)
a large network of physical objects including sensors and equipment
OSI Layer 1 - Physical
Protocols: 100BaseT, 1000BaseT.
Device: hubs, RJ45, repeater.
OSI Layer 2 - Data Link
Protocols: Ethernet, MAC, Frames, crc.
Device: NIC, switch, bridge, WAPs.
OSI Layer 3 - Network
,Logical addressing, switching type, route discovery/selection, and packet ordering.
IP, ICMP, ARP, RIP, IPX
Device: Router
OSI Layer 4 - Transport
Protocols (TCP/UDP), windowing, buffering
Device: N/A
OSI Layer 5: Session
Protocols: Log on/ Log off, NetBIOS, Negotiation
Device: N/A.
OSI Layer 6: Presentation
Protocols: compression, encryption.
Device: N/A.
OSI Layer 7: Application
Protocols: FTP, HTTP, HTTPS, POP3, SMTP, IMAP
Device: Gateway
UDP
connectionless messaged based protocol with best effort service.
TCP
Transmission Control Protocol, connection oriented protocol with guaranteed service
, ARP
Address Resolution Protocol, resolves IP addresses to MAC addresses.
Loopback address
127.0.0.0 - 127.255.255.255
Multicast address
224.0.0.0 to 239.255.255.255
Private Network addresses
192.168.0.0 - 192.168.255.255
Class A IP Address
1-126 Leading bits.
128 Networks.
16,777,214 Hosts per Network.
Default Subnet Mask 255.0.0.0
Class B IP Address
128-191 Leading bits.
16,384 Networks.
65,534 Hosts per Network.
Default Subnet Mask 255.255.0.0
Class C IP Address
192-223 Leading bits.
2,097,152 Networks.
