Question 1
Question
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.
Answer
-
physical
-
transport
-
session
-
presentation
Question 2
Question
The _______ Layer is responsible for moving frames from on hop to the next?
Answer
-
physical
-
data link
-
transport
-
none
Question 3
Question
The ____ Layer is responsible for the delivery of message from one process to another
Answer
-
network
-
physical
-
transport
-
none
Question 4
Question
In the OSI model, encryption and decryption are functions of the _____ layer?
Answer
-
transport
-
session
-
presentation
-
application
Question 5
Question
Routers function in the _____ layer?
Question 6
Question
switches function in the _____ layers.
Question 7
Question
_______ has a higher transmission rate in the downstream direction than in the upstream direction
Question 8
Question
in an ESS the _______ stations are part of a wired LAN.
Question 9
Question
PPP is a _______ layer protocol?
Answer
-
data link
-
network
-
physical and data link
-
network and data link
Question 10
Question
when the internet started it was decided to make the network layer a ______ service to make it simple
Answer
-
connectionless
-
connection oriented
-
virtual
-
none
Question 11
Question
in a ____ service, there is a relation between all packets belonging to a message?
Answer
-
connectionless
-
connection oriented
-
virtual
-
none
Question 12
Question
In a connection-oriented service, each packet is forwarded based on the______.
Answer
-
destination address
-
label
-
source address
-
none
Question 13
Question
_________ control means regulation the amount of data a source can send without overwhelming the destination.
Answer
-
congestion
-
error
-
flow
-
none
Question 14
Question
______ control in a network means handling a situation in which too many packets are present in an area of the internet
Answer
-
flor
-
error
-
congestion
-
none
Question 15
Question
In class C, the netid is between
Answer
-
0 to 127
-
128 to 191
-
192 to 223
-
none
Question 16
Question
In classless addressing, a ____ is assigned to an organization.
Answer
-
fixed-length
-
fixed number of blocks
-
variable-length block
-
none
Question 17
Question
The number of addresses assigned to an organization in classless addressing _____.
Question 18
Question
Which address could be the beginning address of a block of 32 classless addresses?
Answer
-
2.4.6.5
-
2.4.6.16
-
2.4.6.64
-
none
Question 19
Question
An organization is granted a block: one address is 2.2.2.64/25. If the subnet prefix length is /28 what is the maximum number of subnets?
Question 20
Question
in a _____ delivery, both the deliverer of the ip packet and the destination are on the same network.
Answer
-
connection-oriented
-
connnectionless
-
direct
-
indirect
-
virtual
Question 21
Question
in ______ delivery, the deliverer of the ip packet and the destination are on different networks.
Answer
-
connection-oriented
-
connectionless
-
direct
-
indirect
Question 22
Question
IN _____ forwarding, the full ip address of a destination is given in the routing table
Answer
-
defualt
-
host specific
-
next hop
-
network specific
Question 23
Question
In _______ forwarding, the mask and destination address are both 0.0.0.0 in the routing table.
Answer
-
deafualt
-
host specific
-
next-hop
-
network specific
Question 24
Question
in ______ forwarding the destination address is a network address in the routing table
Answer
-
default
-
host specific
-
next hop
-
network specific
Question 25
Question
In ______ forwarding, the routing table holds the address of just the next hop instead of complete route info.
Answer
-
default
-
host specific
-
next hop
-
network specific
Question 26
Question
in classsless addressing, we need routing table with atleast ______ columns
Question 27
Question
The principle of _______ states that the routing table is sorted from longest mask to the shortest mask.
Answer
-
first mask matching
-
last mask matching
-
longest mask matching
-
shortest mask matching
Question 28
Question
A ____ routing table contains information entered manually?
Answer
-
dynamic
-
hierarchical
-
static
-
virtual
Question 29
Question
The input and output ports of a router perform the ______ layer functions of the router
Answer
-
network
-
physical and data link
-
physical and network
-
transport
Question 30
Question
The _____ protocol is the transmission mechanism used by the tcp/ip sutie.
Question 31
Question
IP is ______ datagram protocol
Question 32
Question
AN HLEN value of decimal 10 means
Answer
-
10 bytes in the header
-
40 bytes in the header
-
10 bytes of option
-
40 bytes of option
Question 33
Question
if the fragment offset has a value of 100 it means that
Answer
-
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
Question 34
Question
The ip header size is _______ bytes long.
Question 35
Question
Packets in the ip layer are called
Answer
-
datagrams
-
frames
-
packets
-
segments
Question 36
Question
When a datagram is encapsulated in a frame, the total size of the datagram must be less than the ____
Question 37
Question
The ______ module consults the MTU table to determine the packet size necessary for transsmission
Answer
-
forwarding
-
fragmentation
-
proccessiong
-
sizing
Question 38
Question
To find the physical address of the exiting-point router, ATM uses the service of ________
Question 39
Question
A ______ is an ARP that acts of behalf of a set of hosts
Question 40
Question
in _____ mapping , a table associating a logical address with a physical address is updated manually
Answer
-
dyanmic
-
static
-
logical
-
physical
Question 41
Question
A ______ is a local address. Its jurisdiction is over a local network
Answer
-
logical address
-
physical address
-
port
-
static address
Question 42
Question
ICMP is a ______ layer protocol
Answer
-
application
-
data link
-
network
-
transport
Question 43
Question
for the purposes of routing, the internet is divided into
Answer
-
autonomous networks
-
autonomous systems
-
wide area networks
-
none
Question 44
Question
routing between autonomous systems is referred to as _______ routing.
Answer
-
border
-
interdomain
-
intradomain
-
out of domain
Question 45
Question
IN _____ routing, the least cost route between any two nodes is the route with the minumum distance
Answer
-
distance vector
-
link state
-
path vector
Question 46
Question
IN _____, each node maintains a vector minimum distance to everynode
Answer
-
distance vector
-
link state
-
path vector
Question 47
Question
in RIP, the ____ timer controls the advertising of regular update messages.
Answer
-
expiration
-
garbage collection
-
periodic
Question 48
Question
RIP uses the services of
Question 49
Question
The _____ routing uses the dijkstra algorithm to build a routing table
Answer
-
distance vector
-
link state
-
path vector
Question 50
Question
in _____ rotuing, we assume that there is one node in each autonomous system that acts on behalf of the the entire system
Answer
-
distance vector
-
link state
-
path vector
Question 51
Question
The ___ protocol allows the admin to assign cost, called the metric to each route
Question 52
Question
BGP uses the services of
Question 53
Question
The main problem that must be solved in providing mobile communication using the ip protocol is
Answer
-
addressing
-
connecting
-
forwarding
-
none
Question 54
Question
The original IP addressing was based on the assumption that a host is ______
Question 55
Question
When a mobile host acts as a foreign agent, the care of address is called a ____ care of address
Answer
-
co-located
-
commmon
-
shared
Question 56
Question
A registration request or reply is sent by ____ using a well known port 434
Question 57
Question
one to many communication between one source and specific group of hosts is classified as a ______ communications
Answer
-
broadcast
-
multicast
-
unicast
Question 58
Question
IN ______, the router forwards the received packet through only one of its interfaces
Answer
-
broadcast
-
multicast
-
unicast
Question 59
Question
emulation of ____ through _____ is not efficient and may create long delays
Answer
-
broadcasting:multicasting
-
multicasting: multiple unicasting
-
unicasting: multiple unicasting
Question 60
Question
in multicast routing, each involved router needs to construct a ___ path tree for each group
Question 61
Question
In the group-shared tree approach, ________ is/are involved in mulitcasting
Answer
-
all routers
-
only some routers
-
only the core router