Certiport Networking Certification
Question 1.
SMTP (Simple Mail Transfer Protocol)
ANSWER
25 TCP
Question 2.
FTP
ANSWER
20, 21 TCP
Question 3.
HTTPS (Hypertext Transfer Pro-tocol Secure)
ANSWER
An encrypted version of HTTP. It uses port 443.
Question 4.
IoT (Internet of Things)
ANSWER
a large network of physical objects including sensors and equipment
Question 5.
OSI Layer 1 - Physical
ANSWER
Protocols: 100BaseT, 1000BaseT. Device: hubs, RJ45, repeater.
Question 6.
OSI Layer 2 - Data Link
ANSWER
Protocols: Ethernet, MAC, Frames, crc. Device: NIC, switch, bridge, WAPs.
Question 7.
OSI Layer 3 - Network
ANSWER
Logical addressing, switching type, route discovery/selection, and packet ordering. IP, ICMP, ARP, RIP, IPX Device: Router
, Question 8.
OSI Layer 4 - Transport
ANSWER
Protocols (TCP/UDP), windowing, buffering Device: N/A
Question 9.
OSI Layer 5: Session
ANSWER
Protocols: Log on/ Log off, NetBIOS, Negotiation Device: N/A.
Question 10.
OSI Layer 6: Pre-sentation
ANSWER
Protocols: compression, encryption. Device: N/A.
Question 11.
OSI Layer 7: Application
ANSWER
Protocols: FTP, HTTP, HTTPS, POP3, SMTP, IMAP Device: Gateway
Question 12.
UDP
ANSWER
connectionless messaged based protocol with best effort service.
Question 13.
TCP
ANSWER
Transmission Control Protocol, connection oriented protocol with guaranteed service
Question 14.
ARP
ANSWER
Address Resolution Protocol, resolves IP addresses to MAC addresses.
Question 15.
Loopback address
ANSWER
127.0.0.0 - 127.255.255.255
, Question 16.
Multicast address
ANSWER
224.0.0.0 to 239.255.255.255
Question 17.
Private Network addresses
ANSWER
192.168.0.0 - 192.168.255.255
Question 18.
Class A IP Address
ANSWER
1-126 Leading bits. 128 Networks. 16,777,214 Hosts per Network. Default Subnet Mask 255.0.0.0
Question 19.
Class B IP Address
ANSWER
128-191 Leading bits. 16,384 Networks. 65,534 Hosts per Network. Default Subnet Mask 255.255.0.0
Question 20.
Class C IP Address
ANSWER
192-223 Leading bits. 2,097,152 Networks. 254 Hosts per Network. Default Subnet Mask 255.255.255.0
Question 21.
Class D IP Address
ANSWER
224-239 Used for multicast testing
Question 22.
Star Topology
ANSWER
Each computer is connected by a single cable. Their is a central connectivity device.
Question 23.
Ring Topology
ANSWER
Each workstation acts as a repeater. Each node is connected to 2 other nodes.
Question 1.
SMTP (Simple Mail Transfer Protocol)
ANSWER
25 TCP
Question 2.
FTP
ANSWER
20, 21 TCP
Question 3.
HTTPS (Hypertext Transfer Pro-tocol Secure)
ANSWER
An encrypted version of HTTP. It uses port 443.
Question 4.
IoT (Internet of Things)
ANSWER
a large network of physical objects including sensors and equipment
Question 5.
OSI Layer 1 - Physical
ANSWER
Protocols: 100BaseT, 1000BaseT. Device: hubs, RJ45, repeater.
Question 6.
OSI Layer 2 - Data Link
ANSWER
Protocols: Ethernet, MAC, Frames, crc. Device: NIC, switch, bridge, WAPs.
Question 7.
OSI Layer 3 - Network
ANSWER
Logical addressing, switching type, route discovery/selection, and packet ordering. IP, ICMP, ARP, RIP, IPX Device: Router
, Question 8.
OSI Layer 4 - Transport
ANSWER
Protocols (TCP/UDP), windowing, buffering Device: N/A
Question 9.
OSI Layer 5: Session
ANSWER
Protocols: Log on/ Log off, NetBIOS, Negotiation Device: N/A.
Question 10.
OSI Layer 6: Pre-sentation
ANSWER
Protocols: compression, encryption. Device: N/A.
Question 11.
OSI Layer 7: Application
ANSWER
Protocols: FTP, HTTP, HTTPS, POP3, SMTP, IMAP Device: Gateway
Question 12.
UDP
ANSWER
connectionless messaged based protocol with best effort service.
Question 13.
TCP
ANSWER
Transmission Control Protocol, connection oriented protocol with guaranteed service
Question 14.
ARP
ANSWER
Address Resolution Protocol, resolves IP addresses to MAC addresses.
Question 15.
Loopback address
ANSWER
127.0.0.0 - 127.255.255.255
, Question 16.
Multicast address
ANSWER
224.0.0.0 to 239.255.255.255
Question 17.
Private Network addresses
ANSWER
192.168.0.0 - 192.168.255.255
Question 18.
Class A IP Address
ANSWER
1-126 Leading bits. 128 Networks. 16,777,214 Hosts per Network. Default Subnet Mask 255.0.0.0
Question 19.
Class B IP Address
ANSWER
128-191 Leading bits. 16,384 Networks. 65,534 Hosts per Network. Default Subnet Mask 255.255.0.0
Question 20.
Class C IP Address
ANSWER
192-223 Leading bits. 2,097,152 Networks. 254 Hosts per Network. Default Subnet Mask 255.255.255.0
Question 21.
Class D IP Address
ANSWER
224-239 Used for multicast testing
Question 22.
Star Topology
ANSWER
Each computer is connected by a single cable. Their is a central connectivity device.
Question 23.
Ring Topology
ANSWER
Each workstation acts as a repeater. Each node is connected to 2 other nodes.
