Question 1

Which of the following tasks is associated with the Session Layer?

Accepted Answer

Connection establishment

Answer

IP Address assignment

Answer

Data block breakdown

Answer

Port number assignment

Question 2

What is the smallest PDC in the TCP/IP model?

Accepted Answer

Segments

Answer

Frames

Answer

Bytes

Answer

Packets

Question 3

Review the communication between a client and a server. When a computer confirms that connection has been made in the Three Way Handshake, what is the flag indicator that is sent?

Accepted Answer

ACK

Answer

RST

Answer

SYN

Answer

SYN/ACK

Question 4

What protocol is responsible for data protection and security against wiretapping while data transfer is occuring?

Accepted Answer

SSH

Answer

HTTP

Answer

SMTP

Answer

TLS

Question 5

What protocol is responsible for electronic mail services?

Accepted Answer

SMTP

Answer

ICMP

Answer

Telnet

Answer

TLS

Question 6

Why would you want to use UDP over TCP?

Accepted Answer

You need a faster way to send packets over the network.

Answer

You need to check for errors more frequently.

Answer

You cannot lose any packets in your transfer.

Answer

You need a more secure way to transfer packets over the network.

Question 7

Why do we need a Domain Name Service (DNS) as part of the internet?

Accepted Answer

Convert domain names to IP addresses.

Answer

It can disguise the data to prevent data intrusion.

Answer

It allows easy access to a database where direct files are stored.

Answer

It enforces the use of IP addresses with the end user.

Question 8

What layer are segments created on in the TCP/IP model?

Accepted Answer

Transport

Answer

Application

Answer

Data Link

Answer

Internet

Question 9

A Wireshark screen shows the following content. Which layer is currently analyzed?

Accepted Answer

Physical Layer

Answer

Session Layer

Answer

Transport Layer

Answer

Application Layer

Question 10

Which term does the OSI model use to reference the terms frame, packet, and segment?

Accepted Answer

Protocol Data Unit (PDU)

Answer

Session

Answer

Presentation

Answer

HTTP

Question 11

Routing data between computers on a network requires several mappings between different addresses. Which of the following statements is true?

Accepted Answer

Hosts use ARP to resolve known IP addresses into MAC addresses.

Answer

Diskless workstations use ARP to ask a server for an IP address.

Answer

ICMP lets routers bypass the general network broadcast by providing a dynamic table of IP-to-MAC address mappings.

Answer

Routers use DNS to resolve MAC addresses of diskless workstations into IP addresses based on the information contained in other routers' routing tables.

Question 12

Which of the following is the process of breaking a message into packets, adding controls and other information, and then transmitting the message through the transmission medium?

Accepted Answer

Encapsulation

Answer

Transformation

Answer

Segmentation

Answer

Sequencing

Question 13

Recently your company acquired another company in the same city. You need to integrate the two email systems so that messages can be exchanged between email servers. Currently, each network uses an email package from a different vendor. Which TCP/IP protocol enables message exchange between systems?

Accepted Answer

SMTP

Answer

IMAP4

Answer

ICMP

Answer

POP3

Question 14

You're an application developer, and you're writing a program for exchanging video files through a TCP/IP network. You need to select a transport protocol that will guarantee delivery. Which TCP/IP protocol provides this capability?

Accepted Answer

TCP

Answer

SIP

Answer

FTP

Answer

UTP

Question 15

In the OSI model, which of the following functions are performed at the Application layer?

Accepted Answer

Enabling of communication between network clients and services.

Answer

Device control for data transmission rates.

Answer

Communication setup, maintenance, and teardown.

Answer

Standard setting for sending and receiving signals.

Question 16

In the OSI model, what is the primary function of the Network layer?

Accepted Answer

Route messages between networks.

Answer

Ensure that packets are delivered with no loss or duplication.

Answer

Transmit data frames.

Answer

Enable communication between network clients and services.

Question 17

Which of the following port scans is also known as the zombie scan?

Accepted Answer

Idle Scan

Answer

Xmas Tree Scan

Answer

Open Scan

Answer

Stealth Scan

Question 18

Workstation3 needs to send data to Workstation2. Identify the correct layer 2 addresses.

Accepted Answer

080046982365, 000b5f2a2222

Answer

080046982365, 000b5f2a5111

Answer

192.168.10.2, 192.168.10.11

Answer

192.168.10.11, 192.11.11/24

Question 19

Which scan doesn’t send an ACK packet which means a connection wasn’t actually made and there is not a security log?

Accepted Answer

Stealth Scan

Answer

Open Scan

Answer

Xmas Tree Scan

Answer

Idle Scan

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