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3DX5X VOL2 > URE 1 > Flashcards

URE 1 Flashcards

1
Q

*What layer of the OSI model defines the electrical, mechanical, procedural, and functional specifications for links btwn communicating ntwk systems?

A

Physical or Layer 1

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2
Q

The IEEE divide the OSI Data Link Layers into what two sublayers?

A

Logical Link Control (LLC) & Media Access Control (MAC)

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3
Q

*At what OSI layer do network switches & bridges operate?

A

Data Link or Layer 2

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4
Q

*At what OSI layer do routers operate?

A

Network or Layer 3

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5
Q

*At what OSI layer are common data compression and encryption schemes used?

A

Presentation or Layer 6

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6
Q

What OSI layer is closest to the end user?

A

Application or Layer 7

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7
Q

What is a formal set of rules and conventions that govern how computers exchange information over a network medium?

A

Protocol

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8
Q

*What topology defines the layout of a network’s devices and media?

A

Physical

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9
Q

*What topology defines the way in which devices communicate and data is transmitted throughout the network?

A

Logical

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10
Q

What topology consists of devices connected to a common, shared cable?

A

Bus

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11
Q

What topology consists of cable segments from each computer connected to a centralized component?

A

Star

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12
Q

What topology combines two or more different physical topologies in a single network?

A

Hybrid

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13
Q

Which network protocol has the DoD chosen as its standard to govern the flow of information?

A

TCP/IP

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14
Q

*What TCP/IP network layer protocol provides the service of matching a known IP address for a destination device to a Media Access Control address?

A

Address Resolution Protocol (ARP)

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15
Q

*What TCP/IP network layer protocol provides the IP address for a device that knows its own MAC address?

A

Reverse Address resolution Protocol (RARP)

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16
Q

*What TCP/IP network layer protocol provides messaging that can help w/ troubleshooting?

A

Internet Control Message Protocol (ICMP)

17
Q

What TCP/IP transport layer protocol provides reliable data delivery services?

A

Transmission Control Protocol (TCP)

18
Q

What application w/in TCP/IP is used to send and receive files via TCP?

A

File Transfer Protocol (FTP)

19
Q

What type of network connects networks that are typically separated by geographical distances btwn cities, states, countries, or around the world?

A

Wide Area Network (WAN)

20
Q

What type of network makes use of tunneling and security protocols to enable a group of two or more computer systems to communicate over the public Internet?

A

Virtual Private Network (VPN)

21
Q

Which is a common port that contains Hyper Text Transfer Protocol servers and proxies?

A

Port 8080

22
Q

How many bits are in an IPv4 address?

A

32 bits

23
Q

Instead of using binary, how are IPv4 addresses expressed to be more user friendly?

A

Dotted Decimal Notation

24
Q

*Using a range of 1-126 in the first octet of an IPv4 address, what class does it belong to?

A

Class A

25
Q

What IPv4 class address is used for networks w/ about 250 nodes?

A

Class C

26
Q

*What IPv4 class address is used for multicast addressing?

A

Class D

27
Q

*What IPv4 reserved address is used for loop back?

A

127.0.0.1

28
Q

*What is a mechanism that allows a network device to divide an IP address into a network and host number?

A

Subnet mask

29
Q

What is the default classful subnet mask on class B networks?

A

255.255.0.0

30
Q

*What method borrows bits from the host field of an IP address to create a subnet?

A

Classless Inter-Domain Routing (CIDR)

31
Q

*Instead of using binary, how are IPv6 addresses expressed to be more user-friendly?

A

Colon Hexadecimal Format

32
Q

What notation is expressed in leading zero compression for IPv6

A

1234:1234:0:0:1234:0:0:1234

33
Q

What notation is expressed in zero compression for IPv6?

A

10AB::3:0:1234:5678

34
Q

What IPv6 Unicast address scope operates w/in a network segment, and will not originate from, or be destined to, an interface that requires a router to direct traffic?

A

Link-local

35
Q

What IPv6 Unicast address scope is designed to be private, internally routable address that does not route outside the site?

A

Site-local

36
Q

What IPv6 Unicast address scope is publicly accessible w/ the Network ID portion of the address broken up into different areas allowing for hierarchical design and allocation?

A

Aggregatable Global

3DX5X VOL2 (4 decks)

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