its 124 networking midterm 1

Which of the matching from the following table is correct? Device Definition 1 WAN link A This serves up resources to a network. 2 Client B It is an older technology that interconnects network components such as clients and servers. It has variable number of available ports. 3 Server C It is a device which makes its forwarding decisions based on logical network addresses. 4 Hub D It might be a workstation, laptop, smartphone with wireless capabilities, or a variety of other end-user terminal devices. 5 Switch E This device can be copper or fiber-optic cable. 6 Router F It interconnects network components, and it has a variety of port densities. It does not simply take traffic in on one port and blast that traffic out all other ports. Rather, it learns which devices reside off of which ports. 7 Media G It is the link that interconnects networks. A. 1G, 2D, 3A, 4B, 5F, 6C, 7E B. 1D, 2G, 3B, 4A, 5F, 6C, 7E C. 1E, 2D, 3A, 4B, 5F, 6C, 7G D. 1B, 2D, 3A, 4G, 5F, 6C, 7E

A. 1G, 2D, 3A, 4B, 5F, 6C, 7E

How many bits are in an IPv4 address? A. 32 B. 64 C. 128 D. 256

A. 32

You have a subnet mask of 255.255.255.248. What is the prefix notation? Hint: Prefix notation is also know as slash notation, denoted by a slash "/" followed by a number between 0 and 32. A. /29 B. /28 C. /27 D. /26

A. /29

What is the administrative distance of a directly connected network? A. 0 B. 90 C. 110 D. 170

A. 0

At which layer of the OSI network model would you find application protocols like HTTP for Web browsing, SMTP for email and CIFS for file sharing? A. Application, Layer 7 B. Presentation, Layer 6 C. Session, Layer 5 D. Transport, Layer 4 E. Network, Layer 3 F. Data Link, Layer 2 G. Physical, Layer 1

A. Application, Layer 7

Which category of UTP cabling is used for 10 Gigabit Ethernet? A. Category 6a B. Category 6 C. Category 10 D. Category 5e

A. Category 6a

What are the steps a DHCP client goes through when requesting an IP address? Make sure they are in the correct order. A. DHCPDISCOVER, DHCPOFFER, DHCPREQUEST, DHCPACK B. DHCPDISCOVER, DHCPREQUEST, DHCPOFFER, DHCPACK C. DHCPOFFER, DHCPDISCOVER, DHCPREQUEST, DHCPACK D. DHCPACK, DHCPDISCOVER, DHCPREQUEST, DHCPOFFER

A. DHCPDISCOVER, DHCPOFFER, DHCPREQUEST, DHCPACK

You can configure user authentication at Layer 2 of the OSI. What IEEE standard would you use for this? A. IEEE 802.1X B. IEEE 802.1D C. IEEE 802.2x D. IEEE 802.3af

A. IEEE 802.1X

What are the 2 components of a network socket? A. IP address and Port Number B. MAC address and port number C. IP Address and MAC address D. MAC address and protocol E. Router ID and switch port #

A. IP address and Port Number

What type of media is used using the 100Base-FX Ethernet standard? A. MMF B. SMF C. Category 5e D. Category 6a

A. MMF

A common Layer 2 protocol used on dedicated leased lines is ________. A. PPP B. CHAP C. TCP/IP D. IPsec

A. PPP

John, the network administrator of XYZ Corporation, is interested in changing the format of text from American Standard Code for Information Interchange (ASCII) to Extended Binary Code Decimal Interchange Code (EBCDIC). In addition, his IT manager requested that all sensitive and confidential information on their servers should be protected by applying the appropriate encryption. What OSI reference model layer is responsible for data formatting such as encryption and character set translation? A. Presentation layer (Layer 6) B. Data-link layer (Layer 2) C. Session layer (Layer 5) D. Transport layer (Layer 4)

A. Presentation layer (Layer 6)

Which two types of media are twisted-pair cable? A. STP and UTP B. MMF and SMF C. RG-59 and RG-58 D. RJ-11 and RJ-45

A. STP and UTP

This network device is commonly used as the central device in a Star network topology. A layer 2 network device, it interconnects other network components and makes traffic forwarding decisions based upon MAC addresses. A. Switch B. Hub C. Router D. Server E. Media

A. Switch

What is the primary purpose of a virtual desktop? A. To give users access to their data from any device and location B. To save network bandwidth C. To store user information in a data center D. Better authentication and security

A. To give users access to their data from any device and location

Which of the following transport layer protocols of the OSI reference model is a connection-oriented protocol that provides reliable transport between two communicating hosts? A. Transmission Control Protocol (TCP) B. Internet Protocol (IP) C. User datagram Protocol (UDP) D. Internetwork Packet Exchange (IPX)

A. Transmission Control Protocol (TCP)

A link between 2 switches which carries the combined traffic of several VLAN's is called a what? A. Multilink B. Duplex Link C. Trunk D. Point-to-point link

C. Trunk

What is the binary version of the decimal number 49? A. 10110001 B. 00110001 C. 00110010 D. 00111010

B. 00110001

How many octets are in an IPv4 address? A. 2 B. 4 C. 6 D. 8

B. 4

The IP address range of 172.16.0.0 - 172.31.255.255 is what address class? A. A B. B C. C D. D

B. B

A PC on an Ethernet network wants to connect to a server on a different network. What destination IP address and destination MAC address will be used in the packet/frame header sent by the PC? A. Destination IP: IP address of the default gateway router Destination MAC: MAC address of the default gateway router B. Destination IP: IP address of the remote server Destination MAC: MAC address of the default gateway router C. Destination IP: IP address of the remote server Destination MAC: MAC address of the remote server D. Destination IP: IP address of the remote server Destination MAC: MAC address of the PC E. Destination IP: IP address of the PC Destination MAC: MAC address of the default gateway router

B. Destination IP: IP address of the remote server

Which of the following protocols would a PC use to join a multicast group? A. PIM B. IGMP C. IS-IS D. OSPF

B. IGMP

Which of the following is a NOT a network category based on the geographic dispersion of network components? A. Local-area network (LAN) B. Island Area Network (IAN) C. Campus-area network (CAN) D. Metropolitan-area network (MAN) E. Personal-area network (PAN)

B. Island Area Network (IAN)

Which layer of the OSI model is the only one to be subdivided into 2 sublayers, Media Access Control and Logical Link Control? A. Layer 1, physical layer B. Layer 2, Data Link Layer C. Layer 3, Network layer D. Layer 4, Transport layer E. Layer 7, Application Layer

B. Layer 2, Data Link Layer

At which layer of the OSI model would you find routers using IPv4 and IPv6 to route packets between networks? A. Layer 2, Data Link B. Layer 3, Network C. Layer 4, Transport D. Layer 5, Session layer E. Layer 6, Presentation layer

B. Layer 3, Network

Which of the following protocols allows for electric power to be supplied to network devices such as Wireless Access Points, VoIP phones, etc. from a switch over Ethernet cable? A. STP B. POE C. QoS D. VLAN E. CSMA/CD

B. POE

Which type of cable below is the best choice for installation within a drop ceiling used as an open-air return duct, due to its flame-retardant properties? A. Riser B. Plenum C. Multimode D. Twin-axial E. Coaxial

B. Plenum

Which type of Network Address Translation (NAT) allows many internal private IP addresses (Inside Local Addresses) to be mapped to only 1 external public IP address (Inside Global Address)? A. Static NAT B. Port Address Translation (PAT) C. SNAT D. Multicast E. IGMP

B. Port Address Translation (PAT)

What are the two methods used to prevent loops in a distance vector routing protocol? A. Split horizon and hold-down timer B. Split horizon and poison reverse C. Poison reverse and hop count D. Split horizon and hop count

B. Split horizon and poison reverse

How is a switch elected as a root bridge for spanning tree if the bridge priorities are the same? A. The switch with the lowest IP address will become the root bridge. B. The switch with the lowest MAC address will become the root bridge. C. The switch with the highest MAC address will become the root bridge. D. The switch with the highest IP address will become the root bridge.

B. The switch with the lowest MAC address will become the root bridge.

How fast can Category 5e transfer data? A. 10 Mbps B. 100 Mbps C. 1000 Mbps D. 10 Gbps

C. 1000 Mbps

A layer 2 switch has 12 network ports. How many collision domains does it have? A. 1 B. 2 C. 12 D. 24 E. 48

C. 12

Which of the following is NOT a private IPv4 Address? A. 10.10.10.10 B. 192.168.17.34 C. 131.128.1.127 D. 172.20.20.5 E. 169.254.224.175

C. 131.128.1.127

What is a DNS MX record? A. An address record B. An IPv6 address record C. A record for email servers D. A pointer record that points to a canonical name

C. A record for email servers

Which protocol below would a PC use to request the MAC address corresponding to a known IP address on the local network? A. IGMP B. EIGRP C. ARP D. BGP

C. ARP

The term packet is used fairly generically to refer to protocol data unit (PDU). There are PDU equivalent names in the different OSI layers. What is the name of the unit of data in the physical layer of the OSI reference model? A. Segment B. Frames C. Bits D. Packet

C. Bits

An IEEE 802.1D port goes through four states when transitioning to the forwarding state. What is the correct order? A. Blocking, learning, listening, forwarding B. Learning, listening, blocking, forwarding C. Blocking, listening, learning, forwarding D. Listening, blocking, learning, forwarding

C. Blocking, listening, learning, forwarding

What is the minimum media type that must be used to run 1000BASE-T? Hint: 1000BASE-T is Gigabit Ethernet A. Cat 3 B. Cat 5 C. Cat 5e D. Cat 7

C. Cat 5e

Which of the following is NOT a layer of the Open Systems Interconnect (OSI) reference model? A. Physical layer B. Data link layer C. Internet access layer D. Presentation layer

C. Internet access layer

What is the purpose of SIP in VoIP? A. It carries voice and data. B. It connects the VoIP phone to an analog phone. C. It sets up the VoIP phone calls. D. It works with a PBX.

C. It sets up the VoIP phone calls.

Which of the following layers of the OSI reference model is primarily concerned with forwarding data based on logical (IP) addresses? A. Physical layer B. Data link layer C. Network layer D. Presentation layer

C. Network layer

Which of the following PPP authentication protocols uses one-way authentication and sends credentials in unencrypted clear text, possibly allowing passwords to be intercepted? A. WEP B. MS-CHAP C. PAP D. CHAP

C. PAP

Which type of network below is based upon network clients sharing resources directly with each other? A. Client-Server B. Converged Network C. Peer-to-Peer D. Fiber-optic Network E. Wide Area Network

C. Peer-to-Peer

Both PC1 and Server 1 have a default gateway. What is the purpose of a default gateway? A. Block packets B. Forward frames C. Route packets to a different subnet D. Route packets to the same subnet

C. Route packets to a different subnet

Which OSI reference model layer is responsible for the following? (a) Setting up session (b) Maintaining a session (c) Tearing down a session A. Presentation layer (Layer 6) B. Data link layer (Layer 2) C. Session layer (Layer 5) D. Transport layer (layer 4)

C. Session layer (Layer 5)

Which protocol below does a switch use to prevent loops? A. Ethernet B. Power over Ethernet (POE) C. Spanning Tree Protocol (STP) D. Quality of Service (QoS)

C. Spanning Tree Protocol (STP)

The Kapiolani Community College campus network has a direct link to the UH Manoa campus network center via fiber-optic cable. This connection would best be classified as which category of network below? A. Personal Area Network (PAN) B. Wireless Local Area Network (WLAN) C. Wide Area Network (WAN) D. Local Area Network (LAN) E. Storage Area Network (SAN)

C. Wide Area Network (WAN)

A switch feature that involves the logical separation of a switch ports into different broadcast domains is known as a ________. A. subnet B. collision domain C. virtual local-area network (VLAN) D. LAN

C. virtual local-area network (VLAN)

How many bits long is an IPv6 address? A. 32 B. 64 C. 48 D. 128 E. 256

D. 128

You have an IP address with a prefix notation of /27. What is the dotted-decimal form of the subnet mask? A. 255.255.255.0 B. 255.255.255.128 C. 255.255.255.192 D. 255.255.255.224

D. 255.255.255.224

What is the purpose of ARP? A. ARP resolves the MAC address to a NetBIOS name. B. ARP resolves an IP address to a hostname. C. ARP locates the default gateway of the network. D. ARP resolves the IP address of a host to the host's MAC address.

D. ARP resolves the IP address of a host to the host's MAC address.

Which IP addresses assignment method below would require the least administrative efforts for Ithe network administrator? A. Statically B. Manually C. BOOTP D. DHCP

D. DHCP

Which of the following is NOT a wireless networking protocol? A. WiMAX B. LTE C. HSPA+ D. DSL

D. DSL

Two devices transmit data simultaneously on an Ethernet network and a collision occurs. What does each device then do in an attempt to resend the data? A. Each device compares the other device's priority level to its own and the higher priority device retransmits first. B. Each device waits for a Clear to Send (CTS) signal from the switch. C. Both devices immediately attempt to retransmit the data that caused the collision. D. Each device separately sets a random back-off timer, and attempts to retransmit the data when the timer expires. E. They do nothing.

D. Each device separately sets a random back-off timer, and attempts to retransmit the data when the timer expires.

Which of the WAN protocols below supports multiple protocols on the same network by making switching/forwarding decisions based upon labels? A. ATM B. Frame Relay C. SONET D. MPLS E. DSL

D. MPLS

In which network topology is every site directly connected to every other site, making it the more redundant and therefore most reliable network topology? A. Star B. Ring C. Bus D. Mesh E. Octogon

D. Mesh

To have effective port monitoring and see all traffic from every port on a switch, which of the following needs to be configured? A. STP B. Root bridge C. Listening D. Port Mirroring

D. Port Mirroring

What is the purpose of a DNS server? A. Routing packets to the Internet B. Blocking packets from the Internet C. Connecting devices at Layer 2 of the OSI D. Providing an IP address for a fully qualified domain name

D. Providing an IP address for a fully qualified domain name

Which of the following WAN protocols uses fiber-optic cabling exclusively? A. ADSL B. ISDN C. T1 D. SONET E. WiMAX

D. SONET

Select the primary difference(s) between Local Area Networks (LANs) and Wide Area Networks (WANs). A. WANs typically span longer distances than LANs do. B. WANs typically use different network protocols than LANs do. C. WANs typically connect fewer network devices or hosts that LANs do. D. WANs may be wired or wireless, unlike LANs E. A, B, and C above

E. A, B, and C above

7 Osi model layers 7- 6- 5- 4- 3- 2- 1-

Layer 7: The application layer. Layer 6: The presentation layer. Layer 5: The session layer. Layer 4: The transport layer. Layer 3: The network layer. Layer 2: The data-link layer. Layer 1: The physical layer

Static NAT requires 1 external public IP address (Inside Global Address) for each internal private IP address (Inside Local Address). True False

True

n the context of networking, the acronym PSTN refers to the legacy Public Switched Telephone Network originally used for telephone land lines. True False

True

A demarc is the point in a telephone network where the maintenance responsibility passes from a telephone company to the subscriber (unless the subscriber has purchased inside wiring maintenance). True False

True

A service level agreement (SLA) is used to specify the specific performance metrics (for example, available bandwidth and maximum delay) that are guaranteed for a service over a certain percentage of time. True False

True

Asynchronous Transfer Mode (ATM), a cell-switched connection technology that uses 53-byte fixed-length cells, is often categorized as a packet-switched connection technology. True False

True

Dynamic routing protocols allow a router's routing table to be updated as network conditions change. True False

True

Peer-to-Peer networks are more easily scaled up meet increased load than Client-Server networks are. True False

false

A converged network is a network that has the capabilities of transporting multiple types of traffic such as voice, video, and data, which can offer significant cost savings to organizations. True False

true

At upper layers of the OSI reference model, bits are grouped together into protocol data units (PDUs) or data service units. True False

true

The actual traffic flow determines the logical topology, while how components are physically interconnected determines the physical topology. True False

true

When you are interconnecting multiple sites (for example, multiple corporate locations) via WAN links, a hub-and-spoke topology has a WAN link from each remote site (a spoke site) to the main site (the hub site). True False

true