One byte can be represented using eight hexadecimal digits

True or False? 

False, 

1 byte = 8 bits

The IEEE standards for Wireless Local Area Network is IEEE 802.3

True or False? 

False,

it's actually 802.11

Fiber-optic cables eliminate the possibility of electronic eavesdropping

True or False? 

CAT ratings that are still recognized are CAT4, CAT5, CAT5e and CAT6

True or False? 

False,

CAT 4 and CAT 5 are no longer recognized. 

The OSI Transport Layer is also called layer 2

True or False? 

False,

The Transport layer is called Layer 4. 

1000BaseT represents Gigabit Ethernet using UTP cables

True or False? 

IP addresses are part of Data link layer headings

True or False? 

False,

IP addresses are part of the Network Layer

The IP address of a computer must be assigned statically

True or False? 

False,

it can be assigned statically or dynamically through DHCP 

A MAC address is known as a(n) _____ address.

A) Physical

B) Logical

C) IP 

A,

Physical address

Which of the following is a MAC address?

A) 199.165.17.30

B) 00076A:01A5BBA7FF60

C) 01:A5:BB:A7:FF:60 

C,

01:A5:BB:A7:FF:60 

Bandwidth is typically measured in ___

A) bit per second

B) byte per second

A,

bit per second

Which device decreases the number of nodes per collision domain?

A) Hub

B) Switch

C) NIC

B,

Switch 

Which of the following is the most accurate description of the data rate of 1Gbps?

A) 10⁶ bps

B) 10⁹ bps 

C) 10¹² bps

B,

10⁹ bps

1, 0 0 0, 0 0 0, 0 0 0  (9 zeros)

Which of the following command-line utility can be used to find out current TCP/IP network configuration values, such as the IP address and subnet mask?

A) ipconfig

B) cmd 

C) ping

A,

ipconfig

One byte equals to ____ bits.

A) Two

B) Four

C) Eight

D) Sixteen

C,

1 byte = 8 bits

The PDU at the Data Link layer is called a ___.

A) message

B) segment

C) Package

D) Frame

D,

frame

Routing is the responsibility of which of the following layers?

A) Application

B) Transport

C) Network

D) Data link 

C,

Network layer

Which of the following protocols do NOT belong to the transport layers?

A) TCP

B) UDP

C) FTP 

C,

FTP

FPT = Application layer

A frame contains a special field called the cyclic redundancy check (CRC). What does the CRC do?

A) Cycles data across the network

B) Verifies that MAC addresses are correct

C) Verifies that the IP addresses are correct

D) Verifies that the data arrived correctly 

D,

The CRC verifies that the data has arrived correctly.

A frame that is usually addressed to only 1 computer is called a ___ frame.

A) unicast

B) broadcast

C) multicast

A,

unicast = 1 computer ("uni" means 1)

You are the administrator of a 100-node Ethernet network. Your users are complaining of slow network speeds. What could you replace your hub with to increase your network performance?

A) Router

B) Switch

C) NIC 

B,

Switch

___ is the transport layer protocol that ensures reliable end-to-end communication.

A) UDP

B) TCP

C) FTP

B,

TCP.

FTP and UDP do not require handshaking 

The job of the ___ is to convert bits into signals for outgoing messages and signals into bits for incoming messages.

A) Physical Layer

B) Data link layer

C) Network layer

D) Transport layer

A,

Physical Layer

Some NICs can operate in what's called "___mode," essentially, this mode enables the NIC to forward any frames it sees to the CPU.

A) Forwarding

B) Sniffing

C) Analyzing

D) Promiscuous

D,

Promiscuous mode

Which of the following is used by the ping command?

A) HTTP

B) FTP

C) ICMP

D) SMTP

C,

Internet Control Message Protocol 

(ICMP)

The internet is a typical example of _____.

A) LAN

B) WAN

C) MAN

B,

Wide Area Network (WAN)

A lab network consisting of 20 PCs connected through a switch is a typical example of a _____.

A) LAN

B) WAN

C) MAN

A,

Local Area Network

Whether STP or UTP, twisted-pair networking cabling most commonly uses ___ connectors.

A) BNC

B) MT-RJ

C) RJ-45

D) RJ-11

C,

RJ-45

Fast Ethernet refers to Ethernet standards that support a bandwidth of __.

A) 10Mbps

B) 100Mbps

C)1Gbps

D)10Gbps

B)    (believe it or not!)

100Mbps

Ethernet refers to which of the following _____.

A) IEEE 802.3

B) IEEE 802.11

C) IEEE 802.15

D) IEEE 802.16

A,

IEEE 802.3

Which of the following would be found in a Data Link Layer header?

A) The packet's fragmentation offset

B) The packet's sequence number

C) The source's IP address

D) The source's MAC address

D,

The source's MAC address

When you look at a frame captured by a network sniffer software that captured HTTP traffic, which of the following is true?

A) The frame was carried inside an IP datagram, which was carried inside a TCP segment, which was carried within HTTP messge.

B) The HTTP message was carried inside a TCP segment, which was carried inside an IP datagram, which was carried within an Ethernet frame. 

B) The HTTP message was carried inside a TCP segment, which was carried inside an IP datagram, which was carried within an Ethernet frame. 

HTTP (hyptertext transfer protocol) relies on TCP, therefore it's carried inside of a TCP segments -- easy way to remember. 

The following topology is a(n) _____.

A) Daisy chain

B) Extended star

[image]

A,

Daisy Chain

Which of the following is correct?

A) When connecting one PC to another, a crossover cable must be used

B) When connecting 2 switches without uplink ports, a straight-through cable must be used.

C) When connecting one switch's uplink port to another's regular port, a crossover cable must be used.

A,

when connecting one PC to another, a crossover cable must be used

Hyper Text Transfer Protocol

(the primary protocol of the www)

Media Access Control

(The physical address of a network device)

Transmission Control Protocol

(The primary protocol of networks)

User Datagram Protocol

(1 of 4 protocols within TCP/IP)

Unshielded Twisted Pair

(primary cables used in networks)

Local Area Network

(Many computers connected together to make a small network)

Wide Area Network

(Many small networks connected together -- the Internet)

File Transfer Protocol

(The primary TCP protocol to store and transfer files between/within networks)