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Questions and Answers
What is the total delay in the datagram switching case?
What is the total delay in the datagram switching case?
- 0.012 s
- 0.010602 s (correct)
- 0.01068 s
- 0.0085 s
What type of link is a point-to-point WAN?
What type of link is a point-to-point WAN?
- A link connecting devices in an office, building, or campus
- A link providing long distance transmission over a large geographical area
- A link connecting LANs or servers together using switches or routers
- A home DSL connection to Etisalat (correct)
In which network category does a wide area network operate?
In which network category does a wide area network operate?
- Category 6
- Category 8 (correct)
- Category 1
- Category 3
What are the common topologies for local area networks?
What are the common topologies for local area networks?
What does NIC stand for in the context of networks?
What does NIC stand for in the context of networks?
What is the purpose of a Wide Area Network?
What is the purpose of a Wide Area Network?
In a switched network, what are the nodes concerned with?
In a switched network, what are the nodes concerned with?
What type of method is used for data transfer in packet switching?
What type of method is used for data transfer in packet switching?
What kind of packets are accepted in packet switching networks?
What kind of packets are accepted in packet switching networks?
In packet switching, how are longer messages transmitted?
In packet switching, how are longer messages transmitted?
What is included in each packet in packet switching?
What is included in each packet in packet switching?
What is the purpose of redundant connections in a switched network?
What is the purpose of redundant connections in a switched network?
What type of address is a MAC address with the first hexadecimal digit being 4?
What type of address is a MAC address with the first hexadecimal digit being 4?
In Ethernet, what does a MAC destination address with all bits set to 1s represent?
In Ethernet, what does a MAC destination address with all bits set to 1s represent?
Which device operates in a single collision domain according to the text?
Which device operates in a single collision domain according to the text?
What function does a transparent switch (bridge) perform according to the text?
What function does a transparent switch (bridge) perform according to the text?
What technique is used to build a table in transparent switches according to the text?
What technique is used to build a table in transparent switches according to the text?
What type of operation does full duplex support according to the text?
What type of operation does full duplex support according to the text?
What is the main advantage of using a datagram network over a virtual circuit network?
What is the main advantage of using a datagram network over a virtual circuit network?
In datagram-switched networks, what contributes to the total delay for packet transmission?
In datagram-switched networks, what contributes to the total delay for packet transmission?
When comparing the reliability of datagram networks and virtual circuit networks, which statement is true?
When comparing the reliability of datagram networks and virtual circuit networks, which statement is true?
What contributes to the total delay in virtual-circuit switched networks?
What contributes to the total delay in virtual-circuit switched networks?
For a packet size of 1500 Bytes being sent on a link with 2 datagram switches, what is the significance of the queuing time and processing time in each switch?
For a packet size of 1500 Bytes being sent on a link with 2 datagram switches, what is the significance of the queuing time and processing time in each switch?
Why is routing decision not needed in datagram-switched networks?
Why is routing decision not needed in datagram-switched networks?
What is the primary function of a transparent bridge in a network?
What is the primary function of a transparent bridge in a network?
What is the main role of a repeater in a network?
What is the main role of a repeater in a network?
In the context of network devices, what is the purpose of a router?
In the context of network devices, what is the purpose of a router?
What is the key feature of hubs in a network?
What is the key feature of hubs in a network?
How do bridges differ from routers in a network?
How do bridges differ from routers in a network?
What is the primary purpose of the routing table in a network?
What is the primary purpose of the routing table in a network?
What is the function of the Logical Link Control (LLC) sublayer in IEEE 802.2?
What is the function of the Logical Link Control (LLC) sublayer in IEEE 802.2?
What is the primary function of the Medium Access Control (MAC) sublayer in IEEE 802.2?
What is the primary function of the Medium Access Control (MAC) sublayer in IEEE 802.2?
In an 802.3 MAC frame, what is the purpose of the preamble and start frame delimiter (SFD)?
In an 802.3 MAC frame, what is the purpose of the preamble and start frame delimiter (SFD)?
What is the range of bytes for an 802.3 MAC frame, including the address fields?
What is the range of bytes for an 802.3 MAC frame, including the address fields?
Which address type in an 802.3 MAC frame corresponds to a single (unicast) address?
Which address type in an 802.3 MAC frame corresponds to a single (unicast) address?
What are the machines identified by in an 802.2 MAC frame?
What are the machines identified by in an 802.2 MAC frame?
Which sublayer in IEEE 802 handles the coordination of access to the medium?
Which sublayer in IEEE 802 handles the coordination of access to the medium?
What type of service does the Logical Link Control (LLC) sublayer provide to the network layer?
What type of service does the Logical Link Control (LLC) sublayer provide to the network layer?
What do the first 24 bits of a source address in an 802.3 MAC frame represent?
What do the first 24 bits of a source address in an 802.3 MAC frame represent?
What is a function performed by IEEE 802.2 Logical Link Control (LLC)?
What is a function performed by IEEE 802.2 Logical Link Control (LLC)?
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Study Notes
Network Fundamentals
- In datagram switching, the total delay includes queuing time, processing time, and transmission time.
- A point-to-point WAN (Wide Area Network) is a type of link.
- WANs operate in the network category.
LAN Topologies
- Common topologies for local area networks include bus, star, ring, mesh, and hybrid.
Network Devices
- NIC stands for Network Interface Card in the context of networks.
- The primary purpose of a Wide Area Network is to connect multiple LANs.
Packet Switching
- In packet switching, data transfer uses a store-and-forward method.
- Packet switching networks only accept packets with a maximum size.
- Longer messages are transmitted by breaking them into smaller packets.
- Each packet includes source and destination addresses, packet length, and packet sequence number.
- Redundant connections in a switched network improve reliability.
MAC Addresses
- A MAC address with the first hexadecimal digit being 4 is a unicast address.
- A MAC destination address with all bits set to 1s in Ethernet represents a broadcast address.
Switches and Bridges
- A device that operates in a single collision domain is a switch.
- A transparent switch (bridge) forwards frames based on MAC addresses.
- Transparent switches build a table using a technique called learning.
- Full duplex supports simultaneous transmission and reception.
- A repeater's primary function is to amplify and extend network signals.
Network Devices
- A router connects multiple networks and routes traffic between them.
- A hub's primary function is to repeat incoming signals to all connected devices.
- Bridges differ from routers in that they connect multiple networks at the data link layer.
- The primary purpose of a routing table is to store routes for packet forwarding.
IEEE 802.2
- The Logical Link Control (LLC) sublayer provides flow control and error detection services to the network layer.
- The Medium Access Control (MAC) sublayer manages data transmission and reception.
- In an 802.3 MAC frame, the preamble and start frame delimiter (SFD) synchronize the receiver.
- The primary function of the MAC sublayer is to manage access to the medium.
- In an 802.2 MAC frame, machines are identified by unicast addresses.
- The LLC sublayer provides a best-effort delivery service to the network layer.
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