Exam 1 previous test COPY Flashcards
STMP occurs at the ____ layer of the TCP/IP model
Application Layer
A type of guided business transmission medium that uses on off pulses of light
fiber optics
the internet network typically uses ____ switching to move through a network of links and switches
packet
the following statement is false about FDM
it is typically used by separating a circuit into unique slots of time
the _____ layer of the TCP?IP model routes a datagram through a series of routers between the source and destination. This layer may have a specific protocol that varies according to a specific protocol along the way
Link
this type of delay depends upon the number of earlier arriving packets waiting for transmission onto the link
queueing
this type of delay depends upon the physical medium of the link and the distance
propagation
the internet protocol stack has _____ layers, while the ISO OSI reference model has ___ layers
5, 7
this type of security attack renders a network, host, or other piece of infrastructure unusable by legitimate users, often by sending a SYN flood to a server, overwhelming it
DDOS
a tier 1 ISP is a _____ of a tier 2 ISP, and a tier 2 ISP is the _____ to the tier 1 ISP
provider, customer
Packets get dropped in networks because
packets can arrive to find full queues
The _____ is the first router on a path from the end system to any other distant end system
edge router
the following layer is responsible for breaking long messages into smaller segments
transport layer
the following layer is responsible for flow control or sender/receiver speed matching
transport layer
the following layer is responsible for setting up a virtual, end to end connection using the TCP protocol
transport layer
the two most prevalent types of broadband residential access are
Cable and DSL
ethernet occurs at the _____ layer
data link
SMTP is no longer necessary between email routers when using HTTP with MIME extentions
false
despite the anonymity of the internet, servers are able to “remember” a client from a pervious visit by depositing ______ on the client machine
cookies
a _____ connection at the transport layer delivers the following benefits: reliable transport, reliable data transfer service, a virtual connection, and a congestion control mechanism
TCP
the webs application layer protocol that defines the format and sequence of the messages that are passed between browser and Web application server
HTTP
three application layer protocols that are the possible options used along with the SMTP email to obtain receiver information from a mail server
POP3, IMAP, HTTP
the typical port number for HTTP is ____
80
web caching relies on the HTTP method field as follows
conditional GET
