Huawei Network Topologies Quiz

Study Flashcards Play Quiz

Questions and Answers

Which device is closest to end-users and switches data frames?

Switch

What is the role of a terminal device in a data communication system?

Connecting directly to devices like PCs and printers

What is a broadcast domain?

A set of nodes that can receive broadcast packets from a node

Which type of switch is usually used in the access layer?

Ethernet switch Signup and view all the answers

What function does an Ethernet switch typically implement?

Data frame switching, access to end-user devices, basic security functions Signup and view all the answers

What device provides access to the network for end-users?

Switch Signup and view all the answers

What is the purpose of HTTPS?

To provide secure message-oriented communications Signup and view all the answers

Where does Secure Sockets Layer (SSL) operate?

Between the TCP layer and the application layer Signup and view all the answers

What are the key functions of Transport Control Protocol (TCP)?

Reliable data delivery, duplicate data suppression, congestion control, flow control Signup and view all the answers

How do computers communicate on the Internet?

Using either Transmission Control Protocol (TCP) or User Datagram Protocol (UDP) Signup and view all the answers

Which layer of the OSI model does Hypertext Transfer Protocol (HTTP) belong to?

Application layer Signup and view all the answers

What is the primary role of Hypertext Transfer Protocol (HTTP) in network communication?

Supporting the exchange of information on the World Wide Web Signup and view all the answers

What is the role of SMTP in the TCP/IP protocol suite?

Reliable and efficient transfer of electronic mail service Signup and view all the answers

Which protocol uses UDP for transferring files between systems?

TFTP Signup and view all the answers

What does POP3 enable a workstation to do in terms of mail retrieval?

Retrieve mail from the server Signup and view all the answers

Which protocol is used for sharing computer programs and data between hosts?

FTP Signup and view all the answers

What is the main purpose of the DNS protocol on the Internet?

Translating domain names into IP addresses Signup and view all the answers

In which layer of the OSI model does the application layer reside?

Application Layer Signup and view all the answers

What is the purpose of the Sequence Number field in TCP?

Refer to every byte of data sent over a TCP connection Signup and view all the answers

What does the Acknowledgment Number field in TCP indicate?

The sequence number of the next segment's first byte expected by the receiver Signup and view all the answers

What does the Header Length field in TCP specify?

The unit of 32 bits (4 bytes) Signup and view all the answers

What is the minimum possible length for a UDP packet due to the header size?

8 bytes Signup and view all the answers

Why is the Reserved field in TCP always set to 0?

To indicate future protocol changes Signup and view all the answers

What is the primary goal of the Institute of Electrical and Electronics Engineers (IEEE)?

Promoting development and education in electrical engineering and computer science fields Signup and view all the answers

What is the significance of the Control Bits in TCP?

Indicate different states of TCP data segments Signup and view all the answers

What does the Checksum field in a UDP packet refer to?

Checksum of both the UDP header and data Signup and view all the answers

Which organization is known for standardizing LAN technologies such as Ethernet and Wireless LANs?

Institute of Electrical and Electronics Engineers (IEEE) Signup and view all the answers

What does the SYN in SYN-ACK handshake stand for?

Synchronize Signup and view all the answers

Why is the Checksum field in TCP important?

To store and verify data integrity during transmission Signup and view all the answers

What type of representatives make up the American National Standards Institute (ANSI)?

Representatives from industry and government Signup and view all the answers

What is the purpose of the Window Sliding Mechanism in data transmission?

To control data transmission rate Signup and view all the answers

Which organization is focused on writing standards and legislation favorable to the growth of computer and electronic industries?

Electronic Industries Alliance (EIA) Signup and view all the answers

When is the TCP Shutdown (Four-Way Handshake) process initiated?

After the completion of data transmission Signup and view all the answers

Which standardization organization is known for publications such as ASCII and SCSI?

American National Standards Institute (ANSI) Signup and view all the answers

What does the ACK in TCP stand for?

Acknowledgment Signup and view all the answers

What field do Common Standardization Organizations like Huawei focus on for standardization agreements?

Information technology Signup and view all the answers

Study Notes

Network Devices

Terminal device: end-device of the data communication system, provides necessary functions for user access protocol operations
Network Interface Card (NIC): connects devices to a network, allowing access to the internet or local network
Switch: device closest to end-users, used to access the network and switch data frames
Switch functions: data frame switching, access to end-user devices, basic access security functions, and layer 2 link redundancy
Router: network-layer device that forwards data packets on the internet
Modem: device that connects a network to the internet, translates signals from ISP to local devices

Network Topologies

Star Topology: computers connected to a single hub through a cable, advantages: easy to add new nodes, facilitates network monitoring, disadvantages: faults on central node affect entire network
Bus Topology: every computer and network device connected to a single cable, advantages: simple installation, cable resources saved, disadvantages: bus fault affects entire network, low security
Ring Topology: computers connected in a ring, advantages: cable resources saved, disadvantages: difficult to add new nodes, original ring must be interrupted
Tree Topology: root node with multiple nodes connected, advantages: multiple star networks can be quickly combined, disadvantages: fault on a node at a higher layer is more severe
Mesh Topology: point-to-point connection to other nodes or devices, advantages: high reliability, high communication efficiency, disadvantages: high cost, difficult to expand
Hybrid Topology: mix of two different topologies merging as one network

Network Standard Protocols

Common Standardization Organizations: IEEE, ANSI, EIA
IEEE: promotes development and education in electrical engineering and computer science, standardized LAN technologies (Ethernet, token-ring, Wireless LAN)
ANSI: published standards for electronics, industry, and other fields (ASCII, SCSI)
EIA: trade organization that writes ANSI standards and legislation favorable to computer and electronic industries

Application Layer Protocols

Provides interfaces for application software to use network services
Protocols: SMTP, POP3, TFTP, FTP, NFS, DNS, HTTP, HTTPS
Functions: email transfer, file transfer, network file system, domain name system, hypertext transfer protocol

TCP and UDP Connections

TCP: connection-oriented protocol, provides reliable data delivery, duplicate data suppression, congestion control, and flow control
TCP Header Fields: Source Port, Destination Port, Sequence Number, Acknowledgment Number, Header Length, Reserved, Control Bits, Window, Checksum
UDP: connectionless protocol, provides best-effort delivery, no guarantee of delivery
UDP Header Fields: Source Port, Destination Port, Length, Checksum

TCP Handshake and Shutdown

SYN-ACK Handshake: three-way handshake for connection initiation
SYN: synchronize, ACK: acknowledge, FIN: finish
TCP Shutdown: four-way handshake for connection termination, releases system resources

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.