Which intermediary devices could be used to implement security between networks? (Choose two.)

physically connects a computer to a network
provides a permanent address to a computer
identifies the network to which a computer is connected
identifies the logical address of a networked computer and uniquely identifies it to the rest of the network
identifies the device that allows local network computers to communicate with devices on other networks

If the default gateway is configured incorrectly on the host, what is the impact on communications?

The host is unable to communicate on the local network.

The host can communicate with other hosts on the local network, but is unable to communicate with hosts on remote networks.

The host can communicate with other hosts on remote networks, but is unable to communicate with hosts on the local network.

There is no impact on communications.

Refer to the exhibit. Using the network in the exhibit, what would be the default gateway address for host A in the 192.133.219.0 network?

192.135.250.1

192.31.7.1

192.133.219.0

192.133.219.1

Refer to the exhibit. Using the network in the exhibit, what would be the default gateway address for host A in the 192.133.219.0 network?

192.135.250.1
192.31.7.1
192.133.219.0
192.133.219.1

Which portion of the network layer address does a router use to forward packets?

host portion

broadcast address

network portion

gateway address

Which IP packet field will prevent endless loops?

type-of-service
identification
flags
time-to-live
header checksum

In a connectionless system, which of the following is correct?

The destination is contacted before a packet is sent.

The destination is not contacted before a packet is sent.

The destination sends an acknowledgement to the source that indicates the packet was received.

The destination sends an acknowledgement to the source that requests the next packet to be sent.

What information is added during encapsulation at OSI Layer 3?

source and destination MAC

source and destination application protocol

source and destination port number

source and destination IP address

In an IPv4 environment, what information is used by the router to forward data packets from one interface of a router to another?

destination network address

source network address

source MAC address

well known port destination address

Refer to the exhibit. What two pieces of information can be determined from the output that is shown? (Choose two.)

The local host is using three client sessions.

The local host is using web sessions to a remote server.

The local host is listening for TCP connections using public addresses.

The local host is using well-known port numbers to identify the source ports.

The local host is performing the three-way handshake with 192.168.1.101:1037.

After a web browser makes a request to a web server that is listening to the standard port, what will be the source port number in the TCP header of the response from the server?

13
53
80
1024
1728

Which information is found in both the TCP and UDP header information?

sequencing

flow control

acknowledgments

source and destination

Which is an important characteristic of UDP?

acknowledgement of data delivery

minimal delays in data delivery

high reliability of data delivery

same order data delivery

Refer to the exhibit. Host A is using FTP to download a large file from Server 1. During the download process, Server 1 does not receive an acknowledgment from Host A for several bytes of transferred data. What action will Server 1 take as a result?

create a Layer 1 jam signal

reach a timeout and resend the data that needs to be acknowledged

send a RESET bit to the host

change the window size in the Layer 4 header

Refer to the exhibit. In line 7 of this Wireshark capture, what TCP operation is being performed?

session establishment

segment retransmit

data transfer

session disconnect

Refer to the exhibit. The initial TCP exchange of data between two hosts is shown in the exhibit. Assuming an initial sequence number of 0, what sequence number will be included in Acknowledgment 2 if Segment 6 is lost?

1850

3431

3475

Why is flow control used for TCP data transfer?

to synchronize equipment speed for sent data

to synchronize and order sequence numbers so data is sent in complete numerical order

to prevent the receiver from being overwhelmed by incoming data

to synchronize window size on the server

to simplify data transfer to multiple hosts

During a TCP communication session, if the packets arrive to the destination out of order, what will happen to the original message?

The packets will not be delivered.

The packets will be retransmitted from the source.

The packets will be delivered and reassembled at the destination.

The packets will be delivered and not reassembled at the destination.

With TCP/IP data encapsulation, which range of port numbers identifies all well-known applications?

0 to 255

256 to 1022

0 to 1023

1024 to 2047

49153 to 65535

Which transport layer protocol provides low overhead and would be used for applications which do not require reliable data delivery?

TCP

IP

UDP

HTTP

DNS