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44 Cards in this Set
- Front
- Back
Devices that allow two or more networks or multiple parts of one network to connect and exchange data. |
Connectivity Devices |
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TCP uses what to establish a TCP connection? |
three-way handshake |
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How many fields are in a TCP header? |
10 |
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TCP sends a ________ of character strings to the destination host? The destination host sends a similar message back to to establish the fact that the two can talk to each other. |
checksum |
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Messages do not always arrive in the same order they were sent. TCP attaches a chronological _________ __________ to each segment so the destination host can reorder the segments has they arrive. |
sequence number |
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The process of gauging the appropriate rate of transmissions based on how quickly the recipient can accept data is what? |
flow control |
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In a TCP segment the _______ _______ indicates the port number at the source node. |
Source Port |
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In a TCP segment the ________ _______ indicates the port number at the destination note. |
Destination Port |
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In a TCP segment the ________ ________ identifies the data segments position in stream of data segments already sent |
Acknowledgement number (ACK) |
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What is the maximum number of bytes in a TCP header length field of a TCP segment? |
60 bytes |
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In a TCP segment what indicates the field will be for later use? |
reserved |
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What are the six flag used in a TCP segment? |
URG - urgent pointer field ACK - Acknowledgement contains info for the receiver PSH - Push the data to an application without buffering RST - Indicates the connection to be reset SYN - Synchronization of the sequence number between two nodes. FIN - Finishes the segment and signals the connections to be closed. |
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What TCP Segment field is responsible for flow control? |
Sliding-window size (or window) |
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What field in a TCP segment allows the receiving node to determine whether the TCP segment became corrupted during transmission? |
checksum |
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The field in a TCP/IP segment that indicates a location in the data field where ________ data resides. |
Urgent Pointer |
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The field in a TCP/IP segment specifies special ________, such as the maximum segment size a network can handle. |
options |
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This field in a TCP/IP segment contains filler information to ensure the size of the TCP header is a multiple of 32 bits. |
padding |
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This field in a TCP/IP segment contains data originally sent by the source host. |
data |
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This protocol provides no error checking or sequencing. For example talking on a radio show where you can send out your signal whether anyone is listening or not. It is more efficient than TCP and is useful when large amounts of data must be transferred quickly. |
UDP (user datagram protocol) |
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How many fields are in a UDP header? |
4 |
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The ___ packet acts as an envelope for data and contains information necessary for routers to transer data between different LAN segments |
IP |
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What indicates the maximum duration that an IPv4 packet can remain on the network before it is discarded? When a router receives a packet with ______ set to 0 it discards the packet. |
TTL (time to live) |
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What can indicate when part of a network is congested, when data fails to reach its destination, and when data has been discarded because the allotted Time to Live has expired. |
ICMP (internet control message protocol) |
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This protocol works at the network layer and manages multicasting. Used for teleconferencing or video conferencing over the internet. |
IGMP (internet group management protocol) |
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The database of IP-to-MAC address mappings on a router is known as what? |
ARP table Address Resolution Protocol table |
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A group of networks within the same domain that are operated by the same organization are known as what kind of system? |
autonomous system |
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These types of routers direct data between networks within the same autonomous system. |
Interior routers |
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These types of routers connect autonomous systems with an outside network. |
Border routers or gateway routers |
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These types of routers operate on the internet backbone and direct data between autonomous systems |
Exterior routers |
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This database maintains information about where hosts are located and the most efficient way to reach them. |
Routing Table |
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What command allows you to view a host's routing table on a windows based system? |
route print |
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The time it takes for routers to recognize the best path for routing protocols in the event of a change or network outage. |
convergence time |
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This calculates the best path to a destination on the basis of the distance to that destination. They periodically exchange their route information with neighboring routers. |
Distance-vector routing protocols |
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This enables routers to communicate beyond neighboring routers, after which each router can independently map the network and determine the best path between itself and a message's destination node. |
link-state routing protocol |
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Routing protocols used by border routers and exterior routers to distribute data outside of autonomous systems. |
EGP (exterior gateway protocols) |
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A link state routing protocol used on interior or border routers. Has no hop limits on a transmission path, uses a complex algorithm for determining the best path, and maintains a database of other routers links. |
OSPF (open shortest path first) |
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A link state routing protocol that uses the best path algorithm, but only was designed for use on interior routers only. |
IS-IS (intermedieate system to intermediate system) |
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The only exterior gateway protocol and known as the "protocol of the internet". Spans multiple autonomous systems and used by border and exterior routers. |
BGP (border gateway protocol) |
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RIP Router location? Algorithm? |
Routing Information Protocol Router Location - Interior Algorithm - Distance Vector |
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RIPv2 Router Location? Algorithm? |
Routing Information Protocol version 2 Router Location - Interior Algorithm - Distance Vector |
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OSPF Router Location? Algorithm? |
Open Shortest Path First Router Location - Interior or Border Algorithm used - Link State |
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IS-IS Router Location? Algorithm? |
Intermediate System to Intermediate System Router Location - Interior Algorithm - Link State |
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BGP Router Location? Algorithm? |
Border Gateway Protocol
Router Location - Exterior or border Algorithm - Advanced distance vector |
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What command or utility displays TCP/IP statistics and details about TCP/IP components and connections on a host. Includes which port a TCP/IP service is running; which network connections are currently established; number of messages and errors a network interface has handled. |
netstat |