in the OSI Model, when data is transmitted from device A to device B, the header from A's layer 5 is read by B's ____________ Layer.
The _______ Layer is responsible for moving frames from on hop to the next?
The ____ Layer is responsible for the delivery of message from one process to another
In the OSI model, encryption and decryption are functions of the _____ layer?
Routers function in the _____ layer?
data link and network
physical and data link
physical,data link, and network
switches function in the _____ layers.
physical, data link, and network
_______ has a higher transmission rate in the downstream direction than in the upstream direction
in an ESS the _______ stations are part of a wired LAN.
PPP is a _______ layer protocol?
network and data link
when the internet started it was decided to make the network layer a ______ service to make it simple
in a ____ service, there is a relation between all packets belonging to a message?
In a connection-oriented service, each packet is forwarded based on the______.
_________ control means regulation the amount of data a source can send without overwhelming the destination.
______ control in a network means handling a situation in which too many packets are present in an area of the internet
In class C, the netid is between
0 to 127
128 to 191
192 to 223
In classless addressing, a ____ is assigned to an organization.
fixed number of blocks
The number of addresses assigned to an organization in classless addressing _____.
can be any number
must be a multiple of 256
must be a power of 2
Which address could be the beginning address of a block of 32 classless addresses?
An organization is granted a block: one address is 18.104.22.168/25. If the subnet prefix length is /28 what is the maximum number of subnets?
in a _____ delivery, both the deliverer of the ip packet and the destination are on the same network.
in ______ delivery, the deliverer of the ip packet and the destination are on different networks.
IN _____ forwarding, the full ip address of a destination is given in the routing table
In _______ forwarding, the mask and destination address are both 0.0.0.0 in the routing table.
in ______ forwarding the destination address is a network address in the routing table
In ______ forwarding, the routing table holds the address of just the next hop instead of complete route info.
in classsless addressing, we need routing table with atleast ______ columns
The principle of _______ states that the routing table is sorted from longest mask to the shortest mask.
first mask matching
last mask matching
longest mask matching
shortest mask matching
A ____ routing table contains information entered manually?
The input and output ports of a router perform the ______ layer functions of the router
physical and network
The _____ protocol is the transmission mechanism used by the tcp/ip sutie.
IP is ______ datagram protocol
both connectionless and unreliable
AN HLEN value of decimal 10 means
10 bytes in the header
40 bytes in the header
10 bytes of option
40 bytes of option
if the fragment offset has a value of 100 it means that
the datagram has not been fragmented
the datagram is 100 bytes in size
the first byte of the datagram is byte 800
the last byte of the datagram is byte 800
The ip header size is _______ bytes long.
20 to 60
Packets in the ip layer are called
When a datagram is encapsulated in a frame, the total size of the datagram must be less than the ____
The ______ module consults the MTU table to determine the packet size necessary for transsmission
To find the physical address of the exiting-point router, ATM uses the service of ________
A ______ is an ARP that acts of behalf of a set of hosts
in _____ mapping , a table associating a logical address with a physical address is updated manually
A ______ is a local address. Its jurisdiction is over a local network
ICMP is a ______ layer protocol
for the purposes of routing, the internet is divided into
wide area networks
routing between autonomous systems is referred to as _______ routing.
out of domain
IN _____ routing, the least cost route between any two nodes is the route with the minumum distance
IN _____, each node maintains a vector minimum distance to everynode
in RIP, the ____ timer controls the advertising of regular update messages.
RIP uses the services of
The _____ routing uses the dijkstra algorithm to build a routing table
in _____ rotuing, we assume that there is one node in each autonomous system that acts on behalf of the the entire system
The ___ protocol allows the admin to assign cost, called the metric to each route
BGP uses the services of
The main problem that must be solved in providing mobile communication using the ip protocol is
The original IP addressing was based on the assumption that a host is ______
When a mobile host acts as a foreign agent, the care of address is called a ____ care of address
A registration request or reply is sent by ____ using a well known port 434
one to many communication between one source and specific group of hosts is classified as a ______ communications
IN ______, the router forwards the received packet through only one of its interfaces
emulation of ____ through _____ is not efficient and may create long delays
multicasting: multiple unicasting
unicasting: multiple unicasting
in multicast routing, each involved router needs to construct a ___ path tree for each group
In the group-shared tree approach, ________ is/are involved in mulitcasting
only some routers
only the core router