Telecommunications 2 Flashcards
You’ve implemented a network where hosts are assigned specific roles, such as file sharing and printing roles. Other hosts access those resources, but they don’t host services of their own.
Which type of network do you have?
Client-server
Which of the following geographic network types is typically managed by a city as a public utility?
Metropolitan area network (MAN)
You’ve implemented a network where each device provides all other devices on the network with access to shared files.
Which type of network do you have?
Peer-to-peer
You have a network that uses a logical bus topology. How do messages travel through the network?
Messages are broadcast to all devices connected to the network.
You have a network that uses a logical ring topology. How do messages travel through the network?
Messages travel from one device to the next until they reach the destination device.
Your manager has asked you to implement a wired network infrastructure that will accommodate failed connections. You don’t have a large budget, so you decide to provide redundancy for only a handful of critical devices.
Partial mesh
Which of the following topologies connects all devices to a trunk cable?
Bus
Your manager has asked you to implement a network infrastructure that will accommodate failed connections.
Which of the following network topologies provides redundancy for a failed link?
Mesh
Which of the following topologies connects each device to a neighboring device?
Ring
You have a small network that uses a switch to connect multiple devices. Which physical topology are you using?
Star
In the OSI model, which of the following functions are performed at the Application layer? (Select two.)
Enabling of communication between network clients and services.
Integration of network functionality into the host operating system.
Which of the following are included as part of the Data Link layer specifications? (Select two.)
Data transmission between hosts
Physical network device identification
In the OSI model, what is the primary function of the Network layer?
Route messages between networks.
What is the basic purpose of the OSI Physical layer?
Coordinate rules for sending and receiving electrical signals.
In the OSI model, which of the following functions are performed at the Presentation layer? (Select two.)
Data encryption and compression
Data format specifications
Which of the following tasks is associated with the Session layer?
Connection establishment
During TCP/IP communication between two network hosts, information is encapsulated on the sending host and decapsulated on the receiving host using the OSI model.
Match the information format on the left with the appropriate layer of the OSI model on the right.
Transport layer
Segments
Network layer
Packets
Data Link layer
Frames
Physical layer
Bits
Which of the following functions are performed by the OSI Transport layer? (Select three.)
End-to-end flow control
Reliable message delivery
Data segmentation and reassembly
Match each layer of the TCP/IP model on the left with the corresponding layer of the OSI model on the right. Each option on the left can be used more than once.
Presentation layer
Application
Data Link layer
Network
Application layer
Application
Session layer
Application
Network layer
Internetwork
Transport layer
Transport
Match each networking function or device on the left with its associated OSI model layer on the right.
Application layer
HTTP
Presentation layer
Translates data
Session layer
Session ID number
Transport layer
Port number
Network layer
Router
Data Link layer
Switch
Physical layer
Modem
What is the purpose of a frame check sequence (FCS) footer?
Checksum error detection
Which of the following is the process of breaking a message into packets, adding controls and other information, and then transmitting the message through the transmission medium?
Encapsulation
Which term does the OSI model use that’s different from the TCP/IP model in reference to the terms frame, packet, and segment?
Protocol data unit (PDU)
Match each TCP/IP layers with its function.
Breaks the data into pieces.
Transport
Prepares the data to be sent.
Application
Adds physical addresses.
Link
Adds logical addresses.
Internet
Workstation2 needs to send data to Workstation3. Identify the Layer 2 and Layer 3 addresses Workstation2 will use to send the data by dragging the corresponding address from the list on the left to its location on the right.
Layer 2 source address
080046987654
Layer 3 source address
192.168.10.12
Layer 2 destination address
000b5f2a2222
Layer 3 destination address
192.168.11.11
Workstation3 has started communicating with Workstation2. It sends a frame to the default gateway. Identify the Layer 2 and Layer 3 addresses used by the Cisco 2600 router to forward the data to Workstation2 by dragging the corresponding address from the list on the left to its location on the right.
Layer 2 source address
000b5f2a2222
Layer 3 source address
192.168.11.11
Layer 2 destination address
080046987654
Layer 3 destination address
192.168.10.12
When does a router use ARP?
When the router’s routing table doesn’t contain the MAC addresses of devices on the local LAN that they need to forward frames to.
Routing data between computers on a network requires several mappings between different addresses. Which of the following statements is true?
Hosts use ARP to resolve known IP addresses into MAC addresses.
