CDC 3c251 Vol. 3

76 Questions | By Barrym07 | Updated: Mar 19, 2022 | Attempts: 240

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1.

(401)What device is a combination transmitter/receiver in a single package?
- A.
  
  A transceiver
- B.
  
  A repeater
- C.
  
  A router
- D.
  
  A hub
2.

(401)What device operates at the physical layer of the Open System Interconnection (OSI) model and is used in Ethernet networks to connect which device to a fiber or copper cable?
- A.
  
  Transceiver
- B.
  
  Gateway
- C.
  
  Router
- D.
  
  Switch
3.

(402)What device provides the physical, electrical, and electronic connections to the network media?
- A.
  
  Bridge
- B.
  
  Router
- C.
  
  Gateway
- D.
  
  Network interface card(NIC)
4.

(402)What layers of the open system interconnection (OSI) model do network interface cards (NIC) belong?
- A.
  
  Data Link and Network layer
- B.
  
  Physical layer and Network layer
- C.
  
  Physical layer and Data Link layer
- D.
  
  Physical, Data Link, and Network layer
5.

(403)The device that receives a digital signal and regenerates the signal along the next leg of the medium is a...
- A.
  
  Bridge
- B.
  
  Brouter
- C.
  
  Gateway
- D.
  
  Repeater
6.

(403)A repeater with more than one output port is a...
- A.
  
  Hub
- B.
  
  Bridge
- C.
  
  Brouter
- D.
  
  Gateway
7.

(403)What can be used to extend the size of a network?
- A.
  
  Brouter
- B.
  
  Gateway
- C.
  
  Active Hubs
- D.
  
  Passive Hubs
8.

(404)What is a device that subdivides a network into smaller logical pieces, or segments?
- A.
  
  Switch
- B.
  
  Brouter
- C.
  
  Gateway
- D.
  
  Repeater
9.

(404)What is the time a switch takes to figure out where to forward a data unit called?
- A.
  
  Lag
- B.
  
  Hop
- C.
  
  Latency
- D.
  
  Time Zone
10.

(405)What network device is a combination of networking hardware and software that connect two dissimilar kinds of networks?
- A.
  
  Switch
- B.
  
  Brouter
- C.
  
  Gateway
- D.
  
  Repeater
11.

(405)What type of gateway can restrict the kind of access local area network (LAN) users have to the internet, and vice versa?
- A.
  
  A voice/data gateway
- B.
  
  An internet gateway
- C.
  
  An LAN gateway
- D.
  
  A Firewall
12.

(405)What type of gateway might include remote access servers that allow dial-up connectivity to a Local Area Network (LAN)?
- A.
  
  A voice/data gateway
- B.
  
  An internet gateway
- C.
  
  An LAN gateway
- D.
  
  A Firewall
13.

(406)What is a router's strength?
- A.
  
  Its intelligence
- B.
  
  Its quality of service
- C.
  
  Its different interface cards
- D.
  
  Its different types of network connectors
14.

(406)What is the oldest routing protocol?
- A.
  
  Border Gateway Protocol(BGP)
- B.
  
  Open Shortest Path First(OSPF)
- C.
  
  Routing Information Protocol(RIP)
- D.
  
  Enhanced Interior Gateway Routing Protocol(EIGRP)
15.

(406)What is the routing protocol of internet backbones?
- A.
  
  Border Gateway Protocol(BGP)
- B.
  
  Open Shortest Path First(OSPF)
- C.
  
  Routing Information Protocol(RIP)
- D.
  
  Enhanced Interior Gateway Routing Protocol(EIGRP)
16.

(407)Based on a specific input address, which Local Area Network (LAN) switch has the lowest delay and should be considered for supporting real-time applications?
- A.
  
  Hybrid switch
- B.
  
  Cut-through switch
- C.
  
  Fragment-free switch
- D.
  
  Store and forward switch
17.

(408)What synchronous optical network (SONET) device aggregates or splits SONET traffic at various speeds so as to provide access to SONET without demultiplexing the SONET signal stream?
- A.
  
  Add/Drop multiplexer(ADM)
- B.
  
  Drop-and-repeat node(D+R)
- C.
  
  Digital cross connect(DCS)
- D.
  
  Digital line carrier(DLC)
18.

(408)What Synchronous Optical Network (SONET) devices are configured to split SONET traffic and copy individual channels on two or more output links?
- A.
  
  Add/Drop multiplexer(ADM)
- B.
  
  Drop-and-repeat node(D+R)
- C.
  
  Digital cross connect(DCS)
- D.
  
  Digital line carrier(DLC)
19.

(408)When tributary units are grouped together they form...
- A.
  
  A tributary unit group(TUG)
- B.
  
  A virtual container(VC)
- C.
  
  Synchronous transport signal level N (STS-N) frames
- D.
  
  Synchronous transport modules (STM) frames
20.

(408)An OC-12's electrical signal is the same as a Synchronous Transport Signal level-12 (STS-12) frame and equal to what Synchronous Transport Modules (STM) frame?
- A.
  
  STM-2
- B.
  
  STM-4
- C.
  
  STM-6
- D.
  
  STM-8
21.

(409)Because of its cost, Asynchronous Transfer Mode (ATM) is rarely used on small local area networks (LAN). What technology is better suited for LANs?
- A.
  
  Gigabit Ethernet
- B.
  
  Fast Ethernet
- C.
  
  Ethernet
- D.
  
  Synchronous optical network(SONET)
22.

(410)What topology defines the layout of network's devices and media?
- A.
  
  Physical
- B.
  
  Logical
- C.
  
  Star
- D.
  
  Hybrid
23.

(411)What topology consists of devices connected to a common, shared cable?
- A.
  
  Bus
- B.
  
  Ring
- C.
  
  Star
- D.
  
  Hybrid
24.

(411)What topology consists of cable segments from each computer connected to a centralized component?
- A.
  
  Bus
- B.
  
  Ring
- C.
  
  Star
- D.
  
  Hybrid
25.

(411)What topology has the stations connected in the form of a circle?
- A.
  
  Bus
- B.
  
  Ring
- C.
  
  Star
- D.
  
  Hybrid