Review 1 Flashcards
TCP is a connection-oriented protocol that uses a three-way handshake to establish a connection to a system port. Computer 1 sends a SYN packet to Computer 2. Which packet does Computer 2 send back?
SYN/ACK
What are the steps in the network troubleshooting process?
Identify the problem
Establish a theory of probable cause.
Test the theory.
Establish a plan of action.
Implement the solution.
Verify full system functionality.
Document the solution.
What is Encapsulation?
The process of breaking a message into packets, adding controls and other information, and then transmitting the message through the transmission medium
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.
During network transmission, data is transferred to various routers, which forward the data to the appropriate network. If the source and destination network addresses reside on the same network, which protocol is used to determine the destination IP’s MAC address?
Address Resolution Protocol (ARP)
You are a network administrator for your company. A frantic user calls you one morning exclaiming that nothing is working. What should you do next in your troubleshooting strategy?
Establish the symptoms
You are a network administrator for your company. A user calls and tells you that after stepping on the network cable in her office, she can no longer access the network.
You go to the office and see that some of the wires in the Cat 5 network cable are now exposed. You make another cable and attach it from the wall plate to the user’s computer.
What should you do next in your troubleshooting strategy?
Test the solution.
What is the basic purpose of the OSI Physical layer?
Coordinate rules for sending and receiving electrical or wireless signals.
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.
Client-server
What is the purpose of a frame check sequence (FCS) footer?
Checksum error detection
Routing data between computers on a network requires several mappings between different addresses. Which of the following statements is true?
Question options:
Diskless workstations use ARP to ask a server for an IP address.
ICMP lets routers bypass the general network broadcast by providing a dynamic table of IP-to-MAC address mappings.
Routers use ARP to resolve known IP addresses into MAC addresses.
Routers use DNS to resolve MAC addresses of diskless workstations into IP addresses based on the information contained in other routers’ routing tables.
Routers use ARP to resolve known IP addresses into MAC addresses.
Which of the following functions are performed by the OSI Transport layer?
Packet formatting for delivery through the medium
Media access control, logical topology, and device identification
Path identification and selection
Reliable message delivery
Reliable message delivery
You have a small network that uses a switch to connect multiple devices. Which physical topology are you using?
A star
Which geographic network types is also known as a campus area network (CAN)?
A Metropolitan area network (MAN)
Your manager has asked you to implement a network infrastructure that will accommodate failed connections.
What topology provides redundancy?
Mesh
In the OSI model, what is the primary function of the Network layer?
The primary function of the Network layer is to move data around an internetwork using logical network and host IDs.
Which of the following features does UDP provide?
Packet acknowledgement
Lost packet retransmission
Data packet sequencing
Low overhead
Low overhead
Which of the topology connects all devices to a trunk cable?
A bus
