Chapter 1 - 3

Question 1

Well-known services ports

Answer 1

0-1024

Question 2

The name of the group responsible for drafting, testing, proposing and maintaining official internet standards.

Answer 2

IETF Internet Engineering task force

Question 3

The group responsible for managing all internet domain names, network addresses and protocol parameters.

Answer 3

ICANN Internet corporation for assigned names and numbers

Question 4

RFC

Answer 4

Request for comments

Question 5

RFC process order

Answer 5

1. Proposed Standard 2. Draft Standard 3. internet standard 4. retired standard or historic standard

Question 6

OSI network reference layers

Answer 6

7. Application layer 6. Presentation layer 5. Session layer 4. Transport layer 3. Network layer 2. Data link layer 1. Physical layer

Question 7

Data link layer pdu

Answer 7

frames

Question 8

Network layer pdu

Answer 8

packet

Question 9

transport layer pdu

Answer 9

segment

Question 10

Session layer includes mechanisms to maintain reliable ongoing conversations, called___

Answer 10

checkpoints

Question 11

data link layer addressing

Answer 11

MAC address

Question 12

Network layer addressing

Answer 12

IP address

Question 13

Combining the various sources of outgoing data into a single output data stream is called___

Answer 13

multiplexing

Question 14

______is the process of tapping into the network communications system, capturing packets that cross the network, gathering network statisticss, and decoding the packets into readable form.

Answer 14

protocol analysis

Question 15

Three options for analyzing switched networks:

Answer 15

1. Hubbing out 2. Port redirection 3. Remote monitoring

Question 16

The minimum ethernet frame size is ___

Answer 16

64 bytes

Question 17

The maximum ethernet frame size is ____

Answer 17

1518 bytes

Question 18

Ethernet II frame structure

Answer 18

1. Preamble 8 bytes 2. Destination address 6 bytes 3. Source address 6 bytes 4. type field 2 bytes 5. Data field 46-1500 bytes 6. Frame check sequence 4 bytes

Question 19

Frame check sequence field includes the result of the ____

Answer 19

CRC

Question 20

Flags field bit 0

Answer 20

reserved: set to 0

Question 21

Flags field bit 1

Answer 21

Don’t fragment bit: 0=may fragment 1=don’t fragment

Question 22

Flags field bit 2

Answer 22

More fragments bit: 0=last fragment; 1=more to come

Question 23

IP protocol field # 1

Answer 23

ICMP

Question 24

IP protocol field #6

Answer 24

TCP

Question 25

IP protocol field #17

Answer 25

UDP

Question 26

The primary function of the \_\_\_\_\_\_\_layer is to provide a globally unique address to every host on the internet and paths to and from hosts.

Answer 26

network

Question 27

When two or more RFCs cover the same topic they usually also share the same title. True or false

Answer 27

True

Question 28

\_\_\_\_\_\_\_\_\_involves cutting up a big message into a numbered sequence of chunks, called segments, in which each chunk represents the maximum data payload that the network media can carry between sender and receiver.

Answer 28

segmentation

Question 29

The Session layer includes mechanisms to maintain reliable ongoing conversations, called \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_.

Answer 29

checkpoints

Question 30

The most important TCP/IP Network Access layer protocol is \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_.

Answer 30

PPP Point-to-Point-Protocol point-to-point-protocol

Question 31

TCP/IP application processes are sometimes called ____ and are identified by port numbers.

Answer 31

network services

Question 32

\_\_\_\_ is considered a premium service connection, offering a service that appears as a “virtual lease line” between end points.

Answer 32

expedited forwarding

Question 33

\_\_\_\_ is used to obtain an IP address for an associated data link address.

Answer 33

RARP

Question 34

The ____ field provides error detection on the contents of the IP header only.

Answer 34

IP header checksum

Question 35

IP fragmentation enables a larger packet (for example, a token ring 4,096-byte packet) to be automatically fragmented by a ____ into smaller packets to cross a link that supports a smaller MTU, such as an Ethernet link.

Answer 35

router

Question 36

\_\_\_\_ was designed to provide devices with a method for notifying each other that a link is experiencing congestion before the routers start to drop packets.

Answer 36

Explicit Congestion Notification

Question 37

The ____________________ field is a two-byte field that provides bit-level integrity checks for data as sent.

Answer 37

FCS Frame-check-sequence

Question 38

When a packet is fragmented, all fragments are given different TTL values. true of false

Answer 38

false

Question 39

0x0800

Answer 39

IPv4

Question 40

0x0806

Answer 40

ARP

Question 41

IP Header fields

Answer 41

1. Version 2. Hdr length 3. Type of Service 4. Total lenght 5. Identification 6. Flags 7. Fragment offset 8. Time to live 9. Protocol 10. Header checksum 11. Source IP 12. Dest IP 13. Options (if any)