CPSC 353 Final Quizlet

In IEEE 802.11, when a frame is going from one station in a BSS to another station in the same BSS, the address flag is _____

00

What is the default prefix length for class B in CIDR notation?

16

In TCP, if the ACK value is 200, then byte _______ has been received successfully.

199

You are sending a 30 Mbit MP3 file from a source host to a destination host. All links in the path between source and destination have a transmission rate of 10 Mbps. Assume that the propagation speed is 2 * 10^8 meters/sec, and the distance between source and destination is 10,000 km. Suppose there is only one link between source and destination. Also suppose that the entire MP3 file is sent as one packet. The transmission delay is:

3 seconds

There are ___ bytes ins a MAC address

6

Suppose an application generates chunks of 60 bytes of data every second, and each chunk gets encapsulated in a TCP segment and then an IP datagram. What is the maximum percentage of each datagram that will contain application data?

60%

In IEEE 802.11, a ___ is made of stationary or mobile wireless stations and an optional central base station, known as the access point (AP).

BSS

A socket address consists of a pair of IP addresses, a local and a remote

False

Over a TCP connection, suppose host A sends two segments to host B, host B sends an acknowledgement for each segment, the first acknowledgement is lost, but the second acknowledgement arrives before the timer for the first segment expires.

Host A will retransmit neither segments

In IEEE 802.11, the ______ is a time period used for collision avoidance.

NAV

HTTP uses the services of _________.

TCP

An ARP reply is normally _______.

Unicast

The transport-layer packet in the TCP/IP protocol suite is called

a segment or a user datagram

In IEEE 802.11, a BSS without an AP is called _________.

an ad hoc architecture.

A client program normally uses ____________ port number. A server program normally uses __________ port number.

an ephemeral; a well-known

The application layer in the TCP/IP protocol suite is usually considered to be the combination of ________ layers in the OSI model

application, presentation, and session

In Ethernet addressing, if all the bits are 1s, the address is _________.

broadcast

In TCP's __________ algorithm the size of the congestion window increases additively until congestion is detected.

congestion avoidance

TCP is a(n) ___________ protocol.

connection-oriented

Propagation delay (time) is the ratio of ______________________.

distance to propagation speed

DNS can use the services of ________.

either UDP or TCP

Ethernet provides which of the following services to the network layer

error detection

For Ethernet, if an adapter determines that a frame it has just received is addressed to a different adapter

it discards the frame without sending an error message to the network layer

The network layer in the Internet provides _________________.

limited error control, but no flow control.

The _________ routing uses the Dijkstra algorithm to build a routing table.

link state

Communication at the data-link layer is ___________________.

node-to-node

In TCP, the receiver can temporarily shut down the window; the sender, however, can always send a segment of _____ byte(s) after the window is shut down.

one

A repeater is a connecting device that operates in the _______ layer(s).

physical

A link-layer switch is a connecting device that operates in the _______ layer(s).

physical and data link

A router is a connecting device that that operates in the _______ layer(s).

physical, data link and network

In routing among ASs, which of the following issues dominants:

policy

The first section of a URL identifier is the __________.

protocol

A VLAN is a local area network configured at the data link layer by_____________.

software

In the Ethernet CSMA/CD protocol, suppose a node constructs a frame and then senses the channel as busy. Then

the adapter waits until it senses the channel idle and then begins to transmit the frame.

When a UDP segment arrives to a host, in order to direct the segment to the appropriate socket, the OS uses

the destination port number

When a TCP segment arrives to a host, the socket to which the segment is directed depends on

the destination port number the source IP address of the datagram that encapsulated the segment the source port number

The source port number on the UDP user datagram header defines _______.

the process running on the sending computer

An HLEN value of decimal 10 means _______.

there are 40 bytes in the header

In the TCP/IP protocol suite, a port number is the identifier at the ____________.

transport layer

TCP applies fast retransmit to a segment when

when it receives three duplicate ACKs for an earlier segment

The stop-and-wait protocol is highly inefficient when

when there is a large distance between source and destination and the transmission rate is high

The CSMA/CD algorithm does not work in wireless LAN because

wireless host does not have enough power to work in a duplex mode. of the hidden station problem. signal fading could prevent a station at one end from hearing a collision at the other end.