TE FA21 (1) Flashcards
The receiver window is found in
a. only acks
b. all tcp headers
c. only syn
d. none
b
which transport layer protocol ensures reliable same-order delivery?
a. icmp
b. ip
c. tcp
d. udp
C
This command identifies the content of the mail message
a. subject
b. content
c. data
d. body
e. rcpt to
c
application layer protocol is used to provide file-sharing and print services to Microsoft apps
a. dhcp
b. smb
c. smtp
d. http
b
in CSMA/CD, what happens if a node receives a jam signal?
a. stops receiving frame in
b. continues sending frame out
c. continues receiving frame in
d. stops sending frames out
a
Full form of NIC
network interface card
application layer protocol
a. ping
b. telnet
c. udp (udp = transport layer)
d. none
b
in RIP operation, which of the following statement is correct
a. router sends update message to neighbors every 30sec
b. to deal with changes in topology such as link failure, a router expects an update from each neighbor within 180sec
c. convergence speed up by triggered updates
d. all
d
several networks are connected together to form a Global network called the
a. network
b. internet
c. intranet
d. none
a
each page on the internet is called a ____
a. WWW
b. web
c. web page
d. host
c
three or more devices share a link in____connections
a. uni point
b. multipoint
c. point to point
d. none
b
small single site network
a. lan
b. dsl
a
layer of OSI determines the interface of the system with the user
Application
___unit(s) in a single bus structure communicate at a time
a. one
b. two
c. three
d. four
b
FTP uses port 21 for sending___and port 20 for sending___
a. identification and password/data file
b. data file/identification and password
c. data file/control signal
d. identification/control signal
e. command/status
A
methods provide dedicated communication channels between two stations?
a. circuit switching
b. switch network
c. packet switching
d. none
a
what is not a characteristic of user datagram protocol?
a. unreliable data transfer
b. connection-oriented
c. no flow control
d. no congestion control
d
the disadvantage of stop-and-wait protocol
a. error-free communication channel does not exist
b. acknowledgment may get lost
c. deadlock may occur
d. all
D
how many duplicate ack numbers trigger the fast retransmission mode?
a. 1
b. 2
c. 3
d. no
c
what was the concern of the telephone system that motivated the ARPANET design? a. scalability b, vulnerability c. efficiency d. none
A
a router operates in which layer of the OSI model?
a. network
b. physical
c. data-link
a
which of the following is displayed by the nslookup utility?
a. the configure default DNS server
b. the IP address of end service
c. all cached DNS entries
d. none
b
which of the following fields that IPv6 dropped from IPv4?
a. header length
b. id/flags/flag offset
c. header checksum
d. all
d
intranet connecting selected customers, suppliers, and officers in addition to the internal personnel is called
a. Usenet
b. extranet
c. intranet
d. internet
B
what field is used to provide flow control?
a. control bits
b. destination port
c. sequence number
d. source port
e. window size
e
which one is not in the UDP segment header?
a. destination port
b. source port
c. receiving window size
d. length
e. checksum
b
the___is the physical path over which a message travels
a. protocol
b. path
c. medium
d. route
C
what layer in the TCP/IP stack is equivalent to the transport layer of the OSI model?
a. application
b. internet
c. host to host
d. network access
c
in a ring topology, the computer in possession of the___can transmit data
a. pocket
b. access method
c. data
d. token
d
the fastest media of data transfer?
a. fiber optic
b. co-axial cable
c. untwisted
d. telephone lines
a
which technology is utilized by internet hotspots? a. bluetooth b. satellite c/ point to point d. wifi
d
the big advantage of using a fiber-optic cable?
a. fiber is common glass, therefore it’s cheaper
b. making custom cable lengths is easier with fiber
c. all that orange fiber looks impressive in the network
d. fiber is not affected by electromagnetic interference
D
which device allows a network to connect to the internet?
a. router
b. switch
c. hub
d. wap
A
In a____network all computers and other communication devices are connected to a central hub
a. hub
b. star
c. ring
d. hybrid
B
What is a three-way handshake?
a. the process to connect three hosts
b. connect 3 processes
c. establish a connection by TCP
d. establish a connection by UDP
C
protocols uses both TCP and UDP?
a. telnet
b. SMTP
c. dns
d. ftp
C
what happens if part of an FTP message is not delivered to the destination?
a. message is lost
b. sends a query
c. re-sent parts
d. re-sent all
C
establishing a temporary communication session between the source and the destination
a. application
b. network
c. physical
d. transport
D
The PDU at the transport layer is called a
a. packet
b. segment
c. frame
d. package
B
The speed at which the monitor accepts data is called
a. response time
b. interlacing
c. bandwidth
d. scanning
C
individual characteristic of switch
longest sentence
Which transport layer protocol would be used for VolP applications? a. SIP B. TCP C. UDP D. VolP transfer protocol
C
in head of line (hol) priority queueing, which of the following statement is a feature for this approach
a. provides differential
b. high-priority classes
c. provide some isolation
d. all
D
Suppose host a then sends two segments to host b
165
stateless best-effort delivery transport layer protocol?
a. icmp
b. ip
c. tcp
d. udp
D
which of following protocol is HTTP built upon?
a. smtp
b. udp
c. ip
d. tcp
D
